Skip Navigation LinksHomeCreek ConditionsCreek Conditions Report

Catfish Creek Condition Report for 2013

View 2011 Report

Caution

3 out of 4 indicators were rated as PASS.

All four indicators must pass
for the creek to be rated as PASS.

Learn more about how this report is created

  • Size: 3,984 acres
  • Location: North and central Sarasota County
  • Discharges into: Little Sarasota Bay

The surface water system in the Catfish Creek Basin has undergone significant alteration over the past century. Historical survey does not identify Catfish Creek by name, but aerial photographs and survey from the mid-1900s clearly show the meandering creek extending inland for over a half mile, narrowing, continuing inland for another mile, and ending at a large wetland. The basin was still relatively undeveloped by the 1970s, but Catfish Creek had been excavated in the developed areas and through the basin, connecting pockets of wetlands to drain low-lying areas. The basin is now highly developed, draining from north to south through a ditch trenched through what is now Palmer Ranch, a master-planned community of residential and commercial development. For basin details see: Little Sarasota Bay Water Quality Management Plan (2012)

Creek Location Map

Water Chemistry Ratings - Freshwater Portion of the Creek

Total nitrogen, total phosphorus, chlorophyll a, and dissolved oxygen levels are monitored carefully by water resource managers and used by regulatory authorities to determine whether a creek meets the water quality standards mandated by the Clean Water Act. Shown below are water quality data for each freshwater stream segment. Florida law defines a threshold for the maximum allowable concentration of nitrogen, phosphorus, and chlorophyll a, and the minimum required concentration of dissolved oxygen in these streams. Learn more about these ratings and how they are calculated »

Data for the following WBIDs is averaged when compiling the data below:
  • 1984AA
Pass

Chlorophyll a

Score: Pass
Units: mg/l Year
2013
Historical
period of record
High 0.0482 0.0968
Mean 0.0171 0.0161 0.01626987
Low 0.0046 0.0009
No. of Samples 35 199

Five-year Rolling Average Graph

      
2/1/200912.5010.0125000mg/l0.0125000
3/1/200954.0010.0332500mg/l0.0540000
4/1/20098.7510.0250800mg/l0.0087500
5/1/200917.2010.0231100mg/l0.0172000
6/1/200938.2010.0261300mg/l0.0382000
7/1/200930.5010.0268600mg/l0.0305000
8/1/200934.3010.0304900mg/l0.0343000
9/1/200920.7010.0249400mg/l0.0207000
10/1/200925.1010.0276700mg/l0.0251000
11/1/200947.0010.0326300mg/l0.0470000
12/1/200977.3010.0391500mg/l0.0773000
1/1/20107.7330.0353600mg/l0.0077300
2/1/20109.4430.0312100mg/l0.0094400
3/1/201022.1030.0314500mg/l0.0221000
4/1/201013.5030.0295100mg/l0.0135000
6/1/201024.2030.0153900mg/l0.0242000
7/1/201024.0030.0186500mg/l0.0240000
8/1/201021.6030.0210800mg/l0.0216000
9/1/201043.3560.0253300mg/l0.0424800
10/1/201012.0030.0250300mg/l0.0120000
11/1/20104.6030.0216300mg/l0.0046000
12/1/201012.1030.0196100mg/l0.0121000
1/1/201112.0030.0176100mg/l0.0120000
2/1/201110.5030.0157600mg/l0.0105000
3/1/201123.0030.0123700mg/l0.0230000
4/1/201124.2030.0144000mg/l0.0242000
5/1/201128.8030.0184300mg/l0.0288000
6/1/201129.0030.0212500mg/l0.0290000
7/1/201119.4030.0224800mg/l0.0194000
8/1/20117.6930.0220200mg/l0.0076900
9/1/201121.2030.0217200mg/l0.0212000
10/1/201126.7030.0221300mg/l0.0267000
11/1/201131.1030.0225200mg/l0.0311000
12/1/201116.9030.0205000mg/l0.0169000
1/1/201210.2030.0189700mg/l0.0102000
2/1/201296.8030.0338200mg/l0.0968000
3/1/201224.2030.0343200mg/l0.0242000
4/1/201224.5030.0339500mg/l0.0245000
5/1/201222.5030.0325200mg/l0.0225000
6/1/201219.5030.0329500mg/l0.0195000
7/1/201210.4030.0329800mg/l0.0104000
8/1/201214.3030.0192300mg/l0.0143000
9/1/201222.5030.0189500mg/l0.0225000
10/1/201227.1030.0193800mg/l0.0271000
11/1/201210.8030.0174300mg/l0.0108000
12/1/201214.0030.0165200mg/l0.0140000
1/1/20134.5930.0155500mg/l0.0045900
2/1/20135.8530.0141400mg/l0.0058500
3/1/20138.5830.0118200mg/l0.0085800
4/1/201321.0030.0108000mg/l0.0210000
5/1/201348.2030.0170400mg/l0.0482000
6/1/201338.6030.0211400mg/l0.0386000
7/1/201327.4030.0249400mg/l0.0274000
8/1/201313.3030.0261800mg/l0.0133000
9/1/201320.8030.0282200mg/l0.0208000
10/1/201321.5030.0283000mg/l0.0215000
11/1/201323.2020.0241300mg/l0.0232000
12/1/201320.3030.0210800mg/l0.0203000
Target
mg/l
Threshold
0.02 mg/l
Pass

Nitrogen, Total

Score: Pass
Units: mg/l Year
2013
Historical
period of record
High 1.444 1.906
Mean 1.0194 1.0468 0.24746915
Low 0.502 0.433
No. of Samples 11 103

Five-year Rolling Average Graph

      
2/1/2009646.0010.6460000mg/l0.6460000
3/1/20091214.0010.9300000mg/l1.2140000
4/1/2009798.0010.8860000mg/l0.7980000
5/1/2009876.0010.8835000mg/l0.8760000
6/1/20091144.0010.9356000mg/l1.1440000
7/1/20091014.0010.9486700mg/l1.0140000
8/1/2009768.0010.9690000mg/l0.7680000
9/1/20091145.0010.9575000mg/l1.1450000
10/1/2009996.0010.9905000mg/l0.9960000
11/1/20091297.0011.0606700mg/l1.2970000
12/1/20091479.0011.1165000mg/l1.4790000
1/1/20101035.0011.1200000mg/l1.0350000
2/1/2010866.0011.1363300mg/l0.8660000
3/1/20101219.0011.1486700mg/l1.2190000
4/1/20101203.0011.1831700mg/l1.2030000
6/1/20101484.0011.1614000mg/l1.4840000
7/1/2010981.0011.1506000mg/l0.9810000
8/1/20101359.0011.2492000mg/l1.3590000
9/1/20101264.0021.2582000mg/l1.2633700
10/1/2010876.0011.1928000mg/l0.8760000
11/1/20101154.0011.1863300mg/l1.1540000
12/1/20101074.0011.1180000mg/l1.0740000
1/1/20111086.0011.1355000mg/l1.0860000
2/1/20111529.0011.1638300mg/l1.5290000
3/1/20111044.0011.1271700mg/l1.0440000
4/1/20111096.0011.1638300mg/l1.0960000
5/1/20111378.0011.2011700mg/l1.3780000
6/1/20111099.0011.2053300mg/l1.0990000
7/1/2011979.0011.1875000mg/l0.9790000
8/1/20111164.0011.1266700mg/l1.1640000
9/1/20111324.0011.1733300mg/l1.3240000
10/1/20111120.0011.1773300mg/l1.1200000
11/1/20111037.0011.1205000mg/l1.0370000
12/1/2011914.0011.0896700mg/l0.9140000
1/1/2012844.0011.0671700mg/l0.8440000
2/1/20121262.0011.0835000mg/l1.2620000
3/1/20121114.0011.0485000mg/l1.1140000
4/1/20121084.0011.0425000mg/l1.0840000
5/1/20121124.0011.0570000mg/l1.1240000
6/1/20121428.0011.1426700mg/l1.4280000
7/1/20121241.0011.2088300mg/l1.2410000
8/1/20121192.0011.1971700mg/l1.1920000
9/1/2012921.0011.1650000mg/l0.9210000
10/1/20121085.0011.1651700mg/l1.0850000
11/1/2012843.0011.1183300mg/l0.8430000
12/1/2012898.0011.0300000mg/l0.8980000
1/1/2013694.0010.9388300mg/l0.6940000
2/1/2013800.0010.8735000mg/l0.8000000
3/1/2013876.0010.8660000mg/l0.8760000
4/1/2013502.0010.7688300mg/l0.5020000
5/1/20131444.0010.8690000mg/l1.4440000
6/1/20131188.0010.9173300mg/l1.1880000
7/1/20131382.0011.0320000mg/l1.3820000
8/1/20131240.0011.1053300mg/l1.2400000
9/1/20131327.0011.1805000mg/l1.3270000
10/1/20131150.0011.2885000mg/l1.1500000
12/1/20131128.0011.2454000mg/l1.1280000
Pass

Phosphorus, Total

Score: Pass
Units: mg/l Year
2013
Historical
period of record
High 0.151 0.63
Mean 0.0989 0.1049 0.07754476
Low 0.048 0.036
No. of Samples 35 199

Five-year Rolling Average Graph

      
2/1/200955.0010.0550000mg/l0.0550000
3/1/200987.0010.0710000mg/l0.0870000
4/1/200970.0010.0706700mg/l0.0700000
5/1/200977.0010.0722500mg/l0.0770000
6/1/2009158.0010.0894000mg/l0.1580000
7/1/2009182.0010.1048300mg/l0.1820000
8/1/2009144.0010.1196700mg/l0.1440000
9/1/2009128.0010.1265000mg/l0.1280000
10/1/200978.0010.1278300mg/l0.0780000
11/1/2009123.0010.1355000mg/l0.1230000
12/1/2009120.0010.1291700mg/l0.1200000
1/1/201068.0030.1101700mg/l0.0680000
2/1/201080.0030.0995000mg/l0.0800000
3/1/2010137.0030.1010000mg/l0.1370000
4/1/2010105.0030.1055000mg/l0.1050000
6/1/2010316.0030.1412000mg/l0.3160000
7/1/2010171.0030.1618000mg/l0.1710000
8/1/2010264.0030.1986000mg/l0.2640000
9/1/2010167.5060.2047000mg/l0.1674100
10/1/201091.0030.2019000mg/l0.0910000
11/1/201083.0030.1820800mg/l0.0830000
12/1/201084.0030.1434200mg/l0.0840000
1/1/201176.0030.1275800mg/l0.0760000
2/1/201166.0030.0945800mg/l0.0660000
3/1/201188.0030.0813300mg/l0.0880000
4/1/201197.0030.0823300mg/l0.0970000
5/1/201184.0030.0825000mg/l0.0840000
6/1/2011124.0030.0891700mg/l0.1240000
7/1/2011107.0030.0943300mg/l0.1070000
8/1/2011161.0030.1101700mg/l0.1610000
9/1/201191.0030.1106700mg/l0.0910000
10/1/2011174.0030.1235000mg/l0.1740000
11/1/201174.0030.1218300mg/l0.0740000
12/1/201164.0030.1118300mg/l0.0640000
1/1/201251.0030.1025000mg/l0.0510000
2/1/201281.0030.0891700mg/l0.0810000
3/1/2012110.0030.0923300mg/l0.1100000
4/1/201298.0030.0796700mg/l0.0980000
5/1/2012450.0030.1423300mg/l0.4500000
6/1/2012241.0030.1718300mg/l0.2410000
7/1/2012130.0030.1850000mg/l0.1300000
8/1/2012175.0030.2006700mg/l0.1750000
9/1/201238.0030.1886700mg/l0.0380000
10/1/201271.0030.1841700mg/l0.0710000
11/1/201251.0030.1176700mg/l0.0510000
12/1/201274.0030.0898300mg/l0.0740000
1/1/201348.0030.0761700mg/l0.0480000
2/1/201381.0030.0605000mg/l0.0810000
3/1/201382.0030.0678300mg/l0.0820000
4/1/2013111.0030.0745000mg/l0.1110000
5/1/201394.0030.0816700mg/l0.0940000
6/1/2013139.0030.0925000mg/l0.1390000
7/1/201374.0030.0968300mg/l0.0740000
8/1/2013150.0030.1083300mg/l0.1500000
9/1/2013151.0030.1198300mg/l0.1510000
10/1/2013117.0030.1208300mg/l0.1170000
11/1/2013107.0020.1230000mg/l0.1070000
12/1/201393.0030.1153300mg/l0.0930000
Target
mg/l
Threshold
0.49 mg/l
Pass

Dissolved Oxygen Saturation

Note: Low DO saturation also may be naturally influenced by inflows from nearby wetlands or groundwater sources.
Score: Pass
Units: percent (%) Year
2013
Historical
period of record
High 124.60 172.70
Mean 69.47 86.6 28.32809
Low 28.50 26.80
No. of Samples 33 228

Five-year Rolling Average Graph

      
2/1/200998.30198.3000000percent (%)98.3000000
3/1/2009160.801129.5500000percent (%)160.8000000
4/1/2009106.801121.9700000percent (%)106.8000000
6/1/200991.301114.3000000percent (%)91.3000000
7/1/2009103.101112.0600000percent (%)103.1000000
8/1/2009102.601112.9200000percent (%)102.6000000
9/1/200952.60191.2800000percent (%)52.6000000
10/1/200986.50187.2200000percent (%)86.5000000
11/1/200972.60184.7800000percent (%)72.6000000
12/1/2009132.80191.7000000percent (%)132.8000000
2/1/2010114.40391.7800000percent (%)114.4000000
3/1/201081.90397.6400000percent (%)81.9000000
4/1/201076.90395.7200000percent (%)76.9000000
7/1/2010113.22896.6100000percent (%)113.2200000
9/1/201099.361696.4900000percent (%)99.3600000
10/1/201084.67899.0800000percent (%)84.6700000
11/1/2010140.688109.4800000percent (%)140.6800000
12/1/2010104.828108.5500000percent (%)104.8200000
1/1/201193.628104.6300000percent (%)93.6200000
2/1/201185.208101.3900000percent (%)85.2000000
3/1/201172.69896.9500000percent (%)72.6900000
4/1/201197.03899.0100000percent (%)97.0300000
5/1/201196.35891.6200000percent (%)96.3500000
1/1/2012105.303105.3000000percent (%)105.3000000
2/1/2012124.703115.0000000percent (%)124.7000000
3/1/2012115.503115.1700000percent (%)115.5000000
4/1/2012115.403115.2300000percent (%)115.4000000
5/1/201276.103107.4000000percent (%)76.1000000
7/1/201226.80391.7000000percent (%)26.8000000
8/1/201234.00373.5600000percent (%)34.0000000
9/1/201279.70366.4000000percent (%)79.7000000
10/1/201267.30356.7800000percent (%)67.3000000
11/1/201283.40358.2400000percent (%)83.4000000
12/1/2012103.50365.7800000percent (%)103.5000000
1/1/2013124.60382.0800000percent (%)124.6000000
2/1/201384.70390.5300000percent (%)84.7000000
3/1/2013120.00397.2500000percent (%)120.0000000
4/1/201375.10398.5500000percent (%)75.1000000
5/1/2013120.803104.7800000percent (%)120.8000000
6/1/201328.50392.2800000percent (%)28.5000000
7/1/201371.90383.5000000percent (%)71.9000000
8/1/201350.70377.8300000percent (%)50.7000000
9/1/201336.50363.9200000percent (%)36.5000000
10/1/201356.00360.7300000percent (%)56.0000000
12/1/201374.60357.9400000percent (%)74.6000000
Target
percent (%)
Threshold
38.00 percent (%)

BOD, Biochemical oxygen demand

Units: mg/l Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

      
2/1/20091.7211.7200000mg/l1.7200000
3/1/20096.0813.9000000mg/l6.0800000
4/1/20091.7313.1800000mg/l1.7300000
5/1/20091.4212.7400000mg/l1.4200000
6/1/20092.1812.6300000mg/l2.1800000
7/1/20092.8212.6600000mg/l2.8200000
8/1/20092.2412.7500000mg/l2.2400000
9/1/20091.9112.0500000mg/l1.9100000
10/1/20093.1112.2800000mg/l3.1100000
11/1/20093.0312.5500000mg/l3.0300000
12/1/20094.7112.9700000mg/l4.7100000
1/1/20101.2232.7000000mg/l1.2200000
2/1/20101.7932.6300000mg/l1.7900000
3/1/20102.0132.6500000mg/l2.0100000
4/1/20101.8232.4300000mg/l1.8200000
6/1/20104.3632.2400000mg/l4.3600000
7/1/20102.8532.5700000mg/l2.8500000
8/1/20102.1832.6400000mg/l2.1800000
9/1/20104.1263.0700000mg/l3.9900000
10/1/20101.3532.9700000mg/l1.3500000
11/1/20102.7332.9300000mg/l2.7300000
12/1/20101.8432.5100000mg/l1.8400000
1/1/20111.5732.3000000mg/l1.5700000
2/1/20111.6532.2100000mg/l1.6500000
3/1/20113.4332.1000000mg/l3.4300000
4/1/20112.1532.2300000mg/l2.1500000
5/1/20114.4832.5200000mg/l4.4800000
6/1/20112.6932.6600000mg/l2.6900000
7/1/20112.6632.8400000mg/l2.6600000
8/1/20112.5833.0000000mg/l2.5800000
9/1/20113.2232.9600000mg/l3.2200000
10/1/20111.8732.9200000mg/l1.8700000
11/1/20111.7132.4600000mg/l1.7100000
12/1/20111.8532.3200000mg/l1.8500000
1/1/20121.8612.1800000mg/l1.8600000
2/1/20124.5332.5100000mg/l4.5300000
3/1/20122.4932.3900000mg/l2.4900000
4/1/20122.1332.4300000mg/l2.1300000
5/1/20122.2932.5300000mg/l2.2900000
6/1/20122.7632.6800000mg/l2.7600000
7/1/20121.5432.6200000mg/l1.5400000
8/1/20121.5032.1200000mg/l1.5000000
9/1/20122.1032.0500000mg/l2.1000000
10/1/20122.0032.0300000mg/l2.0000000
11/1/20121.1031.8300000mg/l1.1000000
12/1/20121.3031.5900000mg/l1.3000000
1/1/20131.2931.5500000mg/l1.2900000
2/1/20131.0731.4800000mg/l1.0700000
3/1/20131.8831.4400000mg/l1.8800000
4/1/20132.5731.5400000mg/l2.5700000
5/1/20132.9731.8500000mg/l2.9700000
6/1/20132.8132.1000000mg/l2.8100000
7/1/20131.4032.1200000mg/l1.4000000
8/1/20131.5332.1900000mg/l1.5300000
9/1/20131.3532.1100000mg/l1.3500000
10/1/20131.4631.9200000mg/l1.4600000
11/1/20130.9721.5900000mg/l0.9700000
12/1/20131.3731.3500000mg/l1.3700000

Color

Units: PCU Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

      

Escherichia coli

Units: cfu/100ml Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

      
Target
cfu/100ml
Threshold
cfu/100ml

Nitrogen, Ammonia + Ammonium as N

Units: ug/l Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

      
2/1/200982.00182.0000000ug/l82.0000000
3/1/200951.00166.5000000ug/l51.0000000
4/1/200975.00169.3300000ug/l75.0000000
5/1/200994.00175.5000000ug/l94.0000000
6/1/200947.00169.8000000ug/l47.0000000
7/1/200942.00165.1700000ug/l42.0000000
8/1/200971.00163.3300000ug/l71.0000000
9/1/200954.00163.8300000ug/l54.0000000
10/1/200921.00154.8300000ug/l21.0000000
11/1/2009104.00156.5000000ug/l104.0000000
12/1/200946.00156.3300000ug/l46.0000000
1/1/2010119.00369.1700000ug/l119.0000000
2/1/201040.00364.0000000ug/l40.0000000
3/1/201079.00368.1700000ug/l79.0000000
4/1/201065.00375.5000000ug/l65.0000000
6/1/201054.00371.4000000ug/l54.0000000
7/1/201072.00362.0000000ug/l72.0000000
8/1/2010201.00394.2000000ug/l201.0000000
9/1/201043.00687.0000000ug/l42.8100000
10/1/201033.00380.6000000ug/l33.0000000
11/1/201043.00374.3300000ug/l43.0000000
12/1/201018.00368.3300000ug/l18.0000000
1/1/201159.00366.1700000ug/l59.0000000
2/1/2011255.00375.1700000ug/l255.0000000
3/1/201134.00373.6700000ug/l34.0000000
4/1/201156.00377.5000000ug/l56.0000000
5/1/201136.00376.3300000ug/l36.0000000
6/1/201186.00387.6700000ug/l86.0000000
7/1/20118.00379.1700000ug/l8.0000000
8/1/2011102.00353.6700000ug/l102.0000000
9/1/201146.00355.6700000ug/l46.0000000
10/1/2011174.00375.3300000ug/l174.0000000
11/1/201178.00382.3300000ug/l78.0000000
12/1/201143.00375.1700000ug/l43.0000000
1/1/20128.00375.1700000ug/l8.0000000
2/1/20128.00359.5000000ug/l8.0000000
3/1/201216.00354.5000000ug/l16.0000000
4/1/20128.00326.8300000ug/l8.0000000
5/1/20128.00315.1700000ug/l8.0000000
6/1/2012137.00330.8300000ug/l137.0000000
7/1/201286.00343.8300000ug/l86.0000000
8/1/201244.00349.8300000ug/l44.0000000
9/1/20128.00348.5000000ug/l8.0000000
10/1/201210.00348.8300000ug/l10.0000000
11/1/201227.00352.0000000ug/l27.0000000
12/1/201211.00331.0000000ug/l11.0000000
1/1/201320.00320.0000000ug/l20.0000000
2/1/20138.00314.0000000ug/l8.0000000
3/1/20138.00314.0000000ug/l8.0000000
4/1/201316.00315.0000000ug/l16.0000000
5/1/201316.00313.1700000ug/l16.0000000
6/1/201358.00321.0000000ug/l58.0000000
7/1/201333.00323.1700000ug/l33.0000000
8/1/201328.00326.5000000ug/l28.0000000
9/1/201363.00335.6700000ug/l63.0000000
10/1/20138.00334.3300000ug/l8.0000000
11/1/201348.00239.6700000ug/l48.0000000
12/1/20138.00331.3300000ug/l8.0000000

Nitrogen, Kjeldahl

Units: ug/l Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

      
2/1/2009642.001642.0000000ug/l642.0000000
3/1/20091210.001926.0000000ug/l1210.0000000
4/1/2009794.001882.0000000ug/l794.0000000
5/1/2009872.001879.5000000ug/l872.0000000
6/1/20091140.001931.6000000ug/l1140.0000000
7/1/20091010.001944.6700000ug/l1010.0000000
8/1/2009764.001965.0000000ug/l764.0000000
9/1/20091020.001933.3300000ug/l1020.0000000
10/1/2009992.001966.3300000ug/l992.0000000
11/1/20091140.0011011.0000000ug/l1140.0000000
12/1/20091380.0011051.0000000ug/l1380.0000000
1/1/2010909.0031034.1700000ug/l909.0000000
2/1/2010861.0031050.3300000ug/l861.0000000
3/1/20101160.0031073.6700000ug/l1160.0000000
4/1/20101190.0031106.6700000ug/l1190.0000000
6/1/20101480.0031120.0000000ug/l1480.0000000
7/1/2010977.0031133.6000000ug/l977.0000000
8/1/20101290.0031219.4000000ug/l1290.0000000
9/1/20101260.0061239.4000000ug/l1259.3600000
10/1/2010872.0031175.8000000ug/l872.0000000
11/1/20101150.0031171.5000000ug/l1150.0000000
12/1/20101070.0031103.1700000ug/l1070.0000000
1/1/2011940.0031097.0000000ug/l940.0000000
2/1/20111330.0031103.6700000ug/l1330.0000000
3/1/20111040.0031067.0000000ug/l1040.0000000
4/1/20111050.0031096.6700000ug/l1050.0000000
5/1/20111310.0031123.3300000ug/l1310.0000000
6/1/20111040.0031118.3300000ug/l1040.0000000
7/1/2011975.0031124.1700000ug/l975.0000000
8/1/20111090.0031084.1700000ug/l1090.0000000
9/1/20111210.0031112.5000000ug/l1210.0000000
10/1/20111090.0031119.1700000ug/l1090.0000000
11/1/2011980.0031064.1700000ug/l980.0000000
12/1/2011898.0031040.5000000ug/l898.0000000
1/1/2012840.0031018.0000000ug/l840.0000000
2/1/20121240.0031043.0000000ug/l1240.0000000
3/1/20121110.0031026.3300000ug/l1110.0000000
4/1/20121080.0031024.6700000ug/l1080.0000000
5/1/20121120.0031048.0000000ug/l1120.0000000
6/1/20121310.0031116.6700000ug/l1310.0000000
7/1/20121180.0031173.3300000ug/l1180.0000000
8/1/20121130.0031155.0000000ug/l1130.0000000
9/1/2012917.0031122.8300000ug/l917.0000000
10/1/20121080.0031122.8300000ug/l1080.0000000
11/1/2012836.0031075.5000000ug/l836.0000000
12/1/2012894.0031006.1700000ug/l894.0000000
1/1/2013684.003923.5000000ug/l684.0000000
2/1/2013796.003867.8300000ug/l796.0000000
3/1/2013872.003860.3300000ug/l872.0000000
4/1/2013498.003763.3300000ug/l498.0000000
5/1/20131440.003864.0000000ug/l1440.0000000
6/1/20131150.003906.6700000ug/l1150.0000000
7/1/20131300.0031009.3300000ug/l1300.0000000
8/1/20131160.0031070.0000000ug/l1160.0000000
9/1/20131190.0031123.0000000ug/l1190.0000000
10/1/20131130.0031228.3300000ug/l1130.0000000
11/1/20131200.0021188.3300000ug/l1200.0000000
12/1/20131110.0031181.6700000ug/l1110.0000000

Nitrogen, Nitrite + Nitrate as N

Units: ug/l Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

      
2/1/20094.0014.0000000ug/l4.0000000
3/1/20094.0014.0000000ug/l4.0000000
4/1/20094.0014.0000000ug/l4.0000000
5/1/20094.0014.0000000ug/l4.0000000
6/1/20094.0014.0000000ug/l4.0000000
7/1/20094.0014.0000000ug/l4.0000000
8/1/20094.0014.0000000ug/l4.0000000
9/1/2009125.00124.1700000ug/l125.0000000
10/1/20094.00124.1700000ug/l4.0000000
11/1/2009157.00149.6700000ug/l157.0000000
12/1/200999.00165.5000000ug/l99.0000000
1/1/2010126.00385.8300000ug/l126.0000000
2/1/20105.00386.0000000ug/l5.0000000
3/1/201059.00375.0000000ug/l59.0000000
4/1/201013.00376.5000000ug/l13.0000000
6/1/20104.00341.4000000ug/l4.0000000
7/1/20104.00317.0000000ug/l4.0000000
8/1/201069.00329.8000000ug/l69.0000000
9/1/20104.00618.8000000ug/l4.0000000
10/1/20104.00317.0000000ug/l4.0000000
11/1/20104.00314.8300000ug/l4.0000000
12/1/20104.00314.8300000ug/l4.0000000
1/1/2011146.00338.5000000ug/l146.0000000
2/1/2011199.00360.1700000ug/l199.0000000
3/1/20114.00360.1700000ug/l4.0000000
4/1/201146.00367.1700000ug/l46.0000000
5/1/201168.00377.8300000ug/l68.0000000
6/1/201159.00387.0000000ug/l59.0000000
7/1/20114.00363.3300000ug/l4.0000000
8/1/201174.00342.5000000ug/l74.0000000
9/1/2011114.00360.8300000ug/l114.0000000
10/1/201130.00358.1700000ug/l30.0000000
11/1/201157.00356.3300000ug/l57.0000000
12/1/201116.00349.1700000ug/l16.0000000
1/1/20124.00349.1700000ug/l4.0000000
2/1/201222.00340.5000000ug/l22.0000000
3/1/20124.00322.1700000ug/l4.0000000
4/1/20124.00317.8300000ug/l4.0000000
5/1/20124.0039.0000000ug/l4.0000000
6/1/2012118.00326.0000000ug/l118.0000000
7/1/201261.00335.5000000ug/l61.0000000
8/1/201262.00342.1700000ug/l62.0000000
9/1/20124.00342.1700000ug/l4.0000000
10/1/20125.00342.3300000ug/l5.0000000
11/1/20127.00342.8300000ug/l7.0000000
12/1/20124.00323.8300000ug/l4.0000000
1/1/201310.00315.3300000ug/l10.0000000
2/1/20134.0035.6700000ug/l4.0000000
3/1/20134.0035.6700000ug/l4.0000000
4/1/20134.0035.5000000ug/l4.0000000
5/1/20134.0035.0000000ug/l4.0000000
6/1/201338.00310.6700000ug/l38.0000000
7/1/201382.00322.6700000ug/l82.0000000
8/1/201380.00335.3300000ug/l80.0000000
9/1/2013137.00357.5000000ug/l137.0000000
10/1/201320.00360.1700000ug/l20.0000000
11/1/201361.00269.6700000ug/l61.0000000
12/1/201318.00366.3300000ug/l18.0000000

pH

Units: None Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

      
2/1/20097.7917.7900000None7.7900000
3/1/20098.1817.9900000None8.1800000
4/1/20097.9817.9800000None7.9800000
6/1/20097.7817.9300000None7.7800000
7/1/20097.9217.9300000None7.9200000
8/1/20097.5417.8800000None7.5400000
9/1/20097.2917.7000000None7.2900000
10/1/20097.8817.6800000None7.8800000
11/1/20097.4817.6500000None7.4800000
12/1/20097.4717.6000000None7.4700000
2/1/20107.8737.6000000None7.8700000
3/1/20107.5137.6400000None7.5100000
4/1/20107.4537.5600000None7.4500000
7/1/20107.9737.7000000None7.9700000
9/1/20107.7667.7300000None7.7600000
10/1/20107.7537.8300000None7.7500000
11/1/20108.3337.9500000None8.3300000
12/1/20108.2238.0100000None8.2200000
1/1/20117.8937.9900000None7.8900000
2/1/20117.8537.9700000None7.8500000
3/1/20118.0238.0100000None8.0200000
4/1/20117.8238.0200000None7.8200000
5/1/20118.3438.0200000None8.3400000
1/1/20127.9637.9600000None7.9600000
2/1/20128.1238.0400000None8.1200000
3/1/20128.0438.0400000None8.0400000
4/1/20127.8537.9900000None7.8500000
5/1/20127.8837.9700000None7.8800000
7/1/20127.0737.7900000None7.0700000
8/1/20127.2737.6200000None7.2700000
9/1/20127.5837.5300000None7.5800000
10/1/20127.4937.4600000None7.4900000
11/1/20127.9437.4700000None7.9400000
12/1/20127.9637.5500000None7.9600000
1/1/20138.0237.7100000None8.0200000
2/1/20138.0237.8400000None8.0200000
3/1/20137.9337.8900000None7.9300000
4/1/20137.7237.9300000None7.7200000
5/1/20138.0637.9500000None8.0600000
6/1/20137.2037.8300000None7.2000000
7/1/20137.5737.7500000None7.5700000
8/1/20137.3737.6400000None7.3700000
9/1/20137.2937.5400000None7.2900000
10/1/20137.4537.4900000None7.4500000
12/1/20137.4437.4200000None7.4400000

Salinity

Units: PSS Year
2013
Historical
period of record
High 0.69 0.87
Mean 0.48 0.5 0.14322
Low 0.28 0.22
No. of Samples 33 172

Five-year Rolling Average Graph

      
2/1/20090.6210.6200000PSS0.6200000
3/1/20090.5810.6000000PSS0.5800000
4/1/20090.7310.6400000PSS0.7300000
6/1/20090.7210.6600000PSS0.7200000
7/1/20090.4710.6200000PSS0.4700000
8/1/20090.4110.5800000PSS0.4100000
9/1/20090.4610.5600000PSS0.4600000
10/1/20090.6710.5500000PSS0.6700000
11/1/20090.4410.5300000PSS0.4400000
12/1/20090.4710.4900000PSS0.4700000
2/1/20100.5130.5100000PSS0.5100000
3/1/20100.2830.4700000PSS0.2800000
4/1/20100.3930.4200000PSS0.3900000
7/1/20100.5130.4200000PSS0.5100000
9/1/20100.4660.4500000PSS0.4500000
10/1/20100.2230.4000000PSS0.2200000
11/1/20100.7130.4800000PSS0.7100000
12/1/20100.6430.5100000PSS0.6400000
1/1/20110.6430.5300000PSS0.6400000
2/1/20110.6630.5600000PSS0.6600000
3/1/20110.6130.5800000PSS0.6100000
4/1/20110.6130.6500000PSS0.6100000
5/1/20110.6030.6300000PSS0.6000000
1/1/20120.7230.7200000PSS0.7200000
2/1/20120.7430.7300000PSS0.7400000
3/1/20120.7030.7200000PSS0.7000000
4/1/20120.6830.7100000PSS0.6800000
5/1/20120.6930.7100000PSS0.6900000
7/1/20120.3330.6300000PSS0.3300000
8/1/20120.3430.5500000PSS0.3400000
9/1/20120.5230.5100000PSS0.5200000
10/1/20120.4630.4700000PSS0.4600000
11/1/20120.6930.4700000PSS0.6900000
12/1/20120.6630.5000000PSS0.6600000
1/1/20130.6130.5500000PSS0.6100000
2/1/20130.6930.6100000PSS0.6900000
3/1/20130.6630.6300000PSS0.6600000
4/1/20130.5630.6500000PSS0.5600000
5/1/20130.6330.6400000PSS0.6300000
6/1/20130.3630.5900000PSS0.3600000
7/1/20130.3830.5500000PSS0.3800000
8/1/20130.2830.4800000PSS0.2800000
9/1/20130.3330.4200000PSS0.3300000
10/1/20130.5330.4200000PSS0.5300000
12/1/20130.5030.4000000PSS0.5000000

Specific conductance

Units: umho Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

      
2/1/20091248.0011248.0000000umho1248.0000000
3/1/20091159.0011203.5000000umho1159.0000000
4/1/20091466.0011291.0000000umho1466.0000000
6/1/20091455.0011332.0000000umho1455.0000000
7/1/2009967.0011259.0000000umho967.0000000
8/1/2009844.0011178.2000000umho844.0000000
9/1/2009943.0011135.0000000umho943.0000000
10/1/20091344.0011110.6000000umho1344.0000000
11/1/2009899.0011075.3300000umho899.0000000
12/1/2009951.001991.3300000umho951.0000000
2/1/20101035.0031034.4000000umho1035.0000000
3/1/2010586.003963.0000000umho586.0000000
4/1/2010793.003852.8000000umho793.0000000
7/1/20101045.003864.7500000umho1045.0000000
9/1/2010452.986763.6600000umho29.4400000
10/1/2010460.003652.6600000umho460.0000000
11/1/20101409.003841.7500000umho1409.0000000
12/1/20101279.003929.2000000umho1279.0000000
1/1/20111284.003977.0000000umho1284.0000000
2/1/20111310.0031032.5000000umho1310.0000000
3/1/20111226.0031161.3300000umho1226.0000000
4/1/20111238.0031291.0000000umho1238.0000000
5/1/20111225.0031260.3300000umho1225.0000000
1/1/20121438.0031438.0000000umho1438.0000000
2/1/20121474.0031456.0000000umho1474.0000000
3/1/20121397.0031436.3300000umho1397.0000000
4/1/20121368.0031419.2500000umho1368.0000000
5/1/20121397.0031414.8000000umho1397.0000000
7/1/2012690.0031265.2000000umho690.0000000
8/1/2012701.0031110.6000000umho701.0000000
9/1/20121066.0031044.4000000umho1066.0000000
10/1/2012937.003958.2000000umho937.0000000
11/1/20121373.003953.4000000umho1373.0000000
12/1/20121312.0031013.1700000umho1312.0000000
1/1/20131226.0031102.5000000umho1226.0000000
2/1/20131379.0031215.5000000umho1379.0000000
3/1/20131310.0031256.1700000umho1310.0000000
4/1/20131138.0031289.6700000umho1138.0000000
5/1/20131274.0031273.1700000umho1274.0000000
6/1/2013755.0031180.3300000umho755.0000000
7/1/2013792.0031108.0000000umho792.0000000
8/1/2013588.003976.1700000umho588.0000000
9/1/2013694.003873.5000000umho694.0000000
10/1/20131069.003862.0000000umho1069.0000000
12/1/20131004.003829.4000000umho1004.0000000

Temperature, water

Units: deg F Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

      
2/1/200966.81166.8100000deg F66.8100000
3/1/200974.37170.5900000deg F74.3700000
4/1/200979.95173.7100000deg F79.9500000
6/1/200987.51177.1600000deg F87.5100000
7/1/200987.31179.1900000deg F87.3100000
8/1/200983.43182.5100000deg F83.4300000
9/1/200985.14184.6700000deg F85.1400000
10/1/200978.31184.3400000deg F78.3100000
11/1/200964.56181.0400000deg F64.5600000
12/1/200974.43178.8600000deg F74.4300000
2/1/201064.47273.3800000deg F64.4700000
3/1/201065.62269.4800000deg F65.6200000
4/1/201075.07268.8300000deg F75.0700000
7/1/201091.15274.0800000deg F91.1500000
9/1/201085.34483.8500000deg F85.3400000
10/1/201079.09285.1900000deg F79.0900000
11/1/201074.34282.4800000deg F74.3400000
12/1/201054.54276.8900000deg F54.5400000
1/1/201164.11271.4800000deg F64.1100000
2/1/201171.37271.4700000deg F71.3700000
3/1/201176.44269.9800000deg F76.4400000
4/1/201184.47270.8800000deg F84.4700000
5/1/201186.45272.9000000deg F86.4500000
1/1/201269.69269.6900000deg F69.6900000
2/1/201271.94270.8200000deg F71.9400000
3/1/201277.99273.2100000deg F77.9900000
4/1/201274.80273.6100000deg F74.8000000
5/1/201284.88275.8600000deg F84.8800000
7/1/201283.19278.5600000deg F83.1900000
8/1/201282.49280.6700000deg F82.4900000
9/1/201283.62281.8000000deg F83.6200000
10/1/201277.36282.3100000deg F77.3600000
11/1/201265.62278.4600000deg F65.6200000
12/1/201272.21277.4200000deg F72.2100000
1/1/201370.84275.3600000deg F70.8400000
2/1/201371.74273.5700000deg F71.7400000
3/1/201365.77270.5900000deg F65.7700000
4/1/201380.71271.1500000deg F80.7100000
5/1/201382.78274.0100000deg F82.7800000
6/1/201384.72276.0900000deg F84.7200000
7/1/201385.41278.5200000deg F85.4100000
8/1/201383.16280.4300000deg F83.1600000
9/1/201384.24283.5000000deg F84.2400000
10/1/201376.86282.8600000deg F76.8600000
12/1/201370.36280.0100000deg F70.3600000

Turbidity

Units: NTU Year
2013
Historical
period of record
High 8.00 9.40
Mean 4.81 4.51 1.64078
Low 2.30 1.20
No. of Samples 35 199

Five-year Rolling Average Graph

      
2/1/20092.4012.4000000NTU2.4000000
3/1/20099.2015.8000000NTU9.2000000
4/1/20092.2014.6000000NTU2.2000000
5/1/20093.6014.3500000NTU3.6000000
6/1/20093.3014.1400000NTU3.3000000
7/1/20094.5014.2000000NTU4.5000000
8/1/20094.7014.5800000NTU4.7000000
9/1/20096.8014.1800000NTU6.8000000
10/1/20093.6014.4200000NTU3.6000000
11/1/20096.5014.9000000NTU6.5000000
12/1/20097.6015.6200000NTU7.6000000
1/1/20106.7035.9800000NTU6.7000000
2/1/20105.8036.1700000NTU5.8000000
3/1/20105.9036.0200000NTU5.9000000
4/1/20103.5036.0000000NTU3.5000000
6/1/20105.9035.5600000NTU5.9000000
7/1/20104.9035.2000000NTU4.9000000
8/1/20108.2035.6800000NTU8.2000000
9/1/20106.6565.8300000NTU6.6000000
10/1/20103.7035.8700000NTU3.7000000
11/1/20105.1035.7400000NTU5.1000000
12/1/20104.2035.4600000NTU4.2000000
1/1/20114.4035.3800000NTU4.4000000
2/1/20113.0034.5100000NTU3.0000000
3/1/20116.1034.4200000NTU6.1000000
4/1/20115.9034.7800000NTU5.9000000
5/1/20117.8035.2300000NTU7.8000000
6/1/20113.0035.0300000NTU3.0000000
7/1/20114.5035.0500000NTU4.5000000
8/1/20113.5035.1300000NTU3.5000000
9/1/20114.2034.8200000NTU4.2000000
10/1/20118.5035.2500000NTU8.5000000
11/1/20115.6034.8800000NTU5.6000000
12/1/20112.1034.7300000NTU2.1000000
1/1/20122.8034.4500000NTU2.8000000
2/1/20124.8034.6700000NTU4.8000000
3/1/20125.5034.8800000NTU5.5000000
4/1/20123.5034.0500000NTU3.5000000
5/1/20124.5033.8700000NTU4.5000000
6/1/20124.4034.2500000NTU4.4000000
7/1/20124.1034.4700000NTU4.1000000
8/1/20123.0034.1700000NTU3.0000000
9/1/20124.4033.9800000NTU4.4000000
10/1/20125.7034.3500000NTU5.7000000
11/1/20123.1034.1200000NTU3.1000000
12/1/20123.1033.9000000NTU3.1000000
1/1/20132.3033.6000000NTU2.3000000
2/1/20133.8033.7300000NTU3.8000000
3/1/20133.8033.6300000NTU3.8000000
4/1/20134.0033.3500000NTU4.0000000
5/1/20138.0034.1700000NTU8.0000000
6/1/20135.9034.6300000NTU5.9000000
7/1/20136.5035.3300000NTU6.5000000
8/1/20135.9035.6800000NTU5.9000000
9/1/20134.7035.8300000NTU4.7000000
10/1/20136.3036.2200000NTU6.3000000
11/1/20134.6025.6500000NTU4.6000000
12/1/20134.6035.4300000NTU4.6000000
Other Measures of Creek Health

Water Chemistry Ratings - Tidal Portion of the Creek

As is the case for predominantly freshwater streams, total nitrogen, total phosphorus, and chlorophyll a levels are monitored carefully by water resource managers and used by regulatory authorities to determine whether a tidally-influenced stream meets the water quality standards mandated by the Clean Water Act. Shown below are water quality data for each saltwater water body within this basin. Florida law defines a threshold for the maximum allowable concentration of chlorophyll a and the minimum required concentration of dissolved oxygen in these streams. No thresholds have been established for the allowable concentration of nitrogen or phosphorus; trend information is provided for these nutrients, to determine whether a statistically significant trend exists and if so, whether levels are rising (bad) or falling (good). Learn more about these ratings and how they are calculated »

Data for the following WBIDs is averaged when compiling the data below:
  • 1984
Pass

Chlorophyll a

Score: Pass
Units: mg/l Year
2013
Historical
period of record
High 0.0 0.1
Mean 0.003 0.0054 0.02272623
Low 0.0003 0.0001
No. of Samples 35 210

Five-year Rolling Average Graph

     
1/1/20091.6910.0016900mg/l0.0016900
2/1/20091.0310.0013600mg/l0.0010300
3/1/200949.0010.0172400mg/l0.0490000
4/1/20091.6210.0133400mg/l0.0016200
5/1/20091.7210.0110100mg/l0.0017200
6/1/20092.5210.0096000mg/l0.0025200
7/1/20091.2010.0095200mg/l0.0012000
8/1/20091.9710.0096700mg/l0.0019700
9/1/20097.6010.0027700mg/l0.0076000
10/1/20092.5810.0029300mg/l0.0025800
11/1/200919.2010.0058500mg/l0.0192000
12/1/200915.3010.0079800mg/l0.0153000
1/1/20102.3130.0081600mg/l0.0023100
2/1/20102.1730.0081900mg/l0.0021700
3/1/201014.2030.0092900mg/l0.0142000
4/1/20108.4730.0102800mg/l0.0084700
6/1/2010142.0030.0338300mg/l0.1420000
7/1/201014.4030.0362500mg/l0.0144000
8/1/201018.6020.0395300mg/l0.0186000
9/1/201025.9960.0418900mg/l0.0193900
10/1/20103.2730.0408500mg/l0.0032700
11/1/20107.3530.0352700mg/l0.0073500
12/1/20105.1930.0124700mg/l0.0051900
1/1/20117.4630.0113100mg/l0.0074600
2/1/20113.0430.0087200mg/l0.0030400
3/1/20114.3930.0051200mg/l0.0043900
4/1/20118.8630.0060500mg/l0.0088600
5/1/20117.5830.0060900mg/l0.0075800
6/1/201121.0030.0087200mg/l0.0210000
7/1/20115.5830.0084100mg/l0.0055800
8/1/20116.3930.0089700mg/l0.0063900
9/1/201110.2030.0099400mg/l0.0102000
10/1/20119.1230.0099800mg/l0.0091200
11/1/201114.8030.0111800mg/l0.0148000
12/1/20112.3130.0080700mg/l0.0023100
1/1/20127.7330.0084300mg/l0.0077300
2/1/201280.2030.0207300mg/l0.0802000
3/1/20126.7030.0201400mg/l0.0067000
4/1/20124.9930.0194600mg/l0.0049900
5/1/20125.6230.0179300mg/l0.0056200
6/1/201219.8030.0208400mg/l0.0198000
7/1/20128.9630.0210500mg/l0.0089600
8/1/201214.1030.0100300mg/l0.0141000
9/1/20123.3530.0094700mg/l0.0033500
10/1/20123.8430.0092800mg/l0.0038400
11/1/20121.0130.0085100mg/l0.0010100
12/1/20120.8930.0053600mg/l0.0008900
1/1/20130.4830.0039500mg/l0.0004800
2/1/20130.6230.0017000mg/l0.0006200
3/1/20130.3230.0011900mg/l0.0003200
4/1/20130.8630.0007000mg/l0.0008600
5/1/20131.1530.0007200mg/l0.0011500
6/1/201319.9030.0038900mg/l0.0199000
7/1/201311.1030.0056600mg/l0.0111000
8/1/201311.7030.0075100mg/l0.0117000
9/1/201312.1030.0094700mg/l0.0121000
10/1/201318.0030.0123300mg/l0.0180000
11/1/20134.0520.0128100mg/l0.0040500
12/1/20132.4730.0099000mg/l0.0024700
Target
mg/l
Threshold
0.011 mg/l
Pass

Nitrogen, Total

Trend analysis shows a weak decreasing trend.
Score: Pass
Units: mg/l Year
2013
Historical
period of record
High 1.6 5.1
Mean 0.8654 1.1221 0.62479166
Low 0.302 0.131
No. of Samples 11 146

Five-year Rolling Average Graph

     
1/1/2009884.0010.8840000mg/l0.8840000
2/1/2009546.0010.7150000mg/l0.5460000
3/1/20091645.0011.0250000mg/l1.6450000
4/1/20091275.0011.0875000mg/l1.2750000
5/1/2009799.0011.0298000mg/l0.7990000
6/1/20091092.0011.0401700mg/l1.0920000
7/1/2009912.0011.0448300mg/l0.9120000
8/1/2009719.0011.0736700mg/l0.7190000
9/1/20091079.0010.9793300mg/l1.0790000
10/1/2009987.0010.9313300mg/l0.9870000
11/1/20091566.0011.0591700mg/l1.5660000
12/1/20091205.0011.0780000mg/l1.2050000
1/1/20101055.0011.1018300mg/l1.0550000
2/1/2010885.0011.1295000mg/l0.8850000
3/1/20101090.0011.1313300mg/l1.0900000
4/1/20101112.0011.1521700mg/l1.1120000
6/1/20104060.0011.6404000mg/l4.0600000
7/1/20101392.0011.7078000mg/l1.3920000
9/1/20101309.0021.9682500mg/l1.3065500
10/1/20101345.0012.0265000mg/l1.3450000
11/1/20101223.0011.8658000mg/l1.2230000
12/1/20101187.0011.2912000mg/l1.1870000
1/1/20111115.0011.2358000mg/l1.1150000
2/1/20111685.0011.3106700mg/l1.6850000
3/1/2011957.0011.2520000mg/l0.9570000
4/1/20111158.0011.2208300mg/l1.1580000
5/1/20111066.0011.1946700mg/l1.0660000
6/1/20111072.0011.1755000mg/l1.0720000
7/1/20111030.0011.1613300mg/l1.0300000
8/1/20111153.0011.0726700mg/l1.1530000
9/1/20111428.0011.1511700mg/l1.4280000
10/1/20111010.0011.1265000mg/l1.0100000
11/1/2011986.0011.1131700mg/l0.9860000
12/1/2011889.0011.0826700mg/l0.8890000
1/1/2012845.0011.0518300mg/l0.8450000
2/1/20121171.0011.0548300mg/l1.1710000
3/1/20121049.0010.9916700mg/l1.0490000
4/1/2012965.0010.9841700mg/l0.9650000
5/1/2012904.0010.9705000mg/l0.9040000
6/1/20121424.0011.0596700mg/l1.4240000
7/1/20121204.0011.1195000mg/l1.2040000
8/1/20121118.0011.1106700mg/l1.1180000
9/1/20121077.0011.1153300mg/l1.0770000
10/1/20121112.0011.1398300mg/l1.1120000
11/1/2012883.0011.1363300mg/l0.8830000
12/1/2012994.0011.0646700mg/l0.9940000
1/1/2013769.0010.9921700mg/l0.7690000
2/1/2013590.0010.9041700mg/l0.5900000
3/1/2013707.0010.8425000mg/l0.7070000
4/1/2013302.0010.7075000mg/l0.3020000
5/1/2013744.0010.6843300mg/l0.7440000
6/1/2013970.0010.6803300mg/l0.9700000
7/1/20131406.0010.7865000mg/l1.4060000
8/1/20131222.0010.8918300mg/l1.2220000
9/1/20131589.0011.0388300mg/l1.5890000
10/1/20131153.0011.1806700mg/l1.1530000
12/1/2013926.0011.2592000mg/l0.9260000
Pass

Phosphorus, Total

Trend analysis shows a weak decreasing trend.
Score: Pass
Units: mg/l Year
2013
Historical
period of record
High 0.2 4.6
Mean 0.1174 0.1634 0.51247107
Low 0.053 0.053
No. of Samples 35 252

Five-year Rolling Average Graph

     
1/1/200974.0010.0740000mg/l0.0740000
2/1/200973.0010.0735000mg/l0.0730000
3/1/2009661.0010.2693300mg/l0.6610000
4/1/2009208.0010.2540000mg/l0.2080000
5/1/200998.0010.2228000mg/l0.0980000
6/1/2009150.0010.2106700mg/l0.1500000
7/1/2009160.0010.2250000mg/l0.1600000
8/1/2009123.0010.2333300mg/l0.1230000
9/1/2009113.0010.1420000mg/l0.1130000
10/1/200992.0010.1226700mg/l0.0920000
11/1/200999.0010.1228300mg/l0.0990000
12/1/200980.0010.1111700mg/l0.0800000
1/1/201060.0030.0945000mg/l0.0600000
2/1/201079.0030.0871700mg/l0.0790000
3/1/2010130.0030.0900000mg/l0.1300000
4/1/201098.0030.0910000mg/l0.0980000
6/1/20104610.0030.9954000mg/l4.6100000
7/1/2010470.0031.0774000mg/l0.4700000
8/1/2010228.0021.1072000mg/l0.2280000
9/1/2010233.5061.1279000mg/l0.2312300
10/1/2010186.0031.1455000mg/l0.1860000
11/1/2010152.0030.9799200mg/l0.1520000
12/1/2010181.0030.2417500mg/l0.1810000
1/1/201191.0030.1785800mg/l0.0910000
2/1/201199.0030.1570800mg/l0.0990000
3/1/201188.0030.1328300mg/l0.0880000
4/1/2011110.0030.1201700mg/l0.1100000
5/1/2011120.0030.1148300mg/l0.1200000
6/1/2011129.0030.1061700mg/l0.1290000
7/1/2011125.0030.1118300mg/l0.1250000
8/1/2011163.0030.1225000mg/l0.1630000
9/1/2011150.0030.1328300mg/l0.1500000
10/1/2011153.0030.1400000mg/l0.1530000
11/1/2011288.0030.1680000mg/l0.2880000
12/1/201177.0030.1593300mg/l0.0770000
1/1/201291.0030.1536700mg/l0.0910000
2/1/2012114.0030.1455000mg/l0.1140000
3/1/2012175.0030.1496700mg/l0.1750000
4/1/2012118.0030.1438300mg/l0.1180000
5/1/2012463.0030.1730000mg/l0.4630000
6/1/2012232.0030.1988300mg/l0.2320000
7/1/2012281.0030.2305000mg/l0.2810000
8/1/2012206.0030.2458300mg/l0.2060000
9/1/2012130.0030.2383300mg/l0.1300000
10/1/2012136.0030.2413300mg/l0.1360000
11/1/201264.0030.1748300mg/l0.0640000
12/1/201292.0030.1515000mg/l0.0920000
1/1/201377.0030.1175000mg/l0.0770000
2/1/201373.0030.0953300mg/l0.0730000
3/1/201353.0030.0825000mg/l0.0530000
4/1/2013192.0030.0918300mg/l0.1920000
5/1/2013164.0030.1085000mg/l0.1640000
6/1/2013150.0030.1181700mg/l0.1500000
7/1/2013144.0030.1293300mg/l0.1440000
8/1/2013137.0030.1400000mg/l0.1370000
9/1/2013172.0030.1598300mg/l0.1720000
10/1/2013132.0030.1498300mg/l0.1320000
11/1/2013122.0020.1428300mg/l0.1220000
12/1/201390.0030.1328300mg/l0.0900000
Target
mg/l
Threshold
mg/l
Caution

Dissolved Oxygen Saturation

Note: Low DO saturation also may be naturally influenced by inflows from nearby wetlands or groundwater sources
Score: Caution
Units: percent (%) Year
2013
Historical
period of record
High 91.4 194.0
Mean 51.62 55.51 32.0017
Low 20.90 0.00
No. of Samples 33 337

Five-year Rolling Average Graph

     
1/1/200977.40177.4000000percent (%)77.4000000
2/1/200990.60184.0000000percent (%)90.6000000
3/1/2009101.10189.7000000percent (%)101.1000000
4/1/200988.80189.4800000percent (%)88.8000000
6/1/200974.70186.5200000percent (%)74.7000000
7/1/2009113.50193.7400000percent (%)113.5000000
9/1/200957.00183.5000000percent (%)57.0000000
10/1/200935.90170.2800000percent (%)35.9000000
11/1/200977.60171.7400000percent (%)77.6000000
1/1/2010103.20368.4300000percent (%)103.2000000
2/1/2010108.00376.3400000percent (%)108.0000000
3/1/201097.00384.3400000percent (%)97.0000000
4/1/201084.60394.0800000percent (%)84.6000000
8/1/201052.01777.8700000percent (%)52.0100000
9/1/201062.03866.2100000percent (%)62.0300000
11/1/201070.87861.6400000percent (%)70.8700000
1/1/201197.97870.7200000percent (%)97.9700000
2/1/201199.93882.7000000percent (%)99.9300000
3/1/2011102.96892.9300000percent (%)102.9600000
4/1/2011108.82896.1100000percent (%)108.8200000
5/1/201178.55897.6500000percent (%)78.5500000
1/1/2012112.203112.2000000percent (%)112.2000000
2/1/2012118.703115.4500000percent (%)118.7000000
3/1/2012175.303135.4000000percent (%)175.3000000
4/1/2012133.003134.8000000percent (%)133.0000000
5/1/2012115.403130.9200000percent (%)115.4000000
7/1/201247.903118.0600000percent (%)47.9000000
8/1/201257.903105.9000000percent (%)57.9000000
9/1/201260.50382.9400000percent (%)60.5000000
10/1/201254.70367.2800000percent (%)54.7000000
11/1/201277.70359.7400000percent (%)77.7000000
12/1/201279.40363.0200000percent (%)79.4000000
1/1/201372.20367.0700000percent (%)72.2000000
2/1/201355.50366.6700000percent (%)55.5000000
3/1/201389.60371.5200000percent (%)89.6000000
4/1/201321.20365.9300000percent (%)21.2000000
5/1/201366.20364.0200000percent (%)66.2000000
6/1/201320.90354.2700000percent (%)20.9000000
7/1/201350.10350.5800000percent (%)50.1000000
8/1/201351.30349.8800000percent (%)51.3000000
9/1/201344.80342.4200000percent (%)44.8000000
10/1/201362.50349.3000000percent (%)62.5000000
12/1/201391.40360.0200000percent (%)91.4000000
Target
percent (%)
Threshold
56.00 percent (%)

BOD, Biochemical oxygen demand

Units: mg/l Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

     
1/1/20091.0911.0900000mg/l1.0900000
2/1/20091.1811.1400000mg/l1.1800000
3/1/20094.9512.4100000mg/l4.9500000
4/1/20090.8712.0200000mg/l0.8700000
5/1/20090.6511.7500000mg/l0.6500000
6/1/20090.6311.5600000mg/l0.6300000
7/1/20090.5311.4700000mg/l0.5300000
8/1/20090.9111.4200000mg/l0.9100000
9/1/20091.1110.7800000mg/l1.1100000
10/1/20090.9710.8000000mg/l0.9700000
11/1/20091.7610.9900000mg/l1.7600000
12/1/20091.5411.1400000mg/l1.5400000
1/1/20100.8631.1900000mg/l0.8600000
2/1/20100.9431.2000000mg/l0.9400000
3/1/20101.4931.2600000mg/l1.4900000
4/1/20101.3831.3300000mg/l1.3800000
6/1/20108.3132.6000000mg/l8.3100000
7/1/20101.1932.6600000mg/l1.1900000
8/1/20102.0222.8800000mg/l2.0200000
9/1/20101.9462.9700000mg/l1.8200000
10/1/20100.7032.8300000mg/l0.7000000
11/1/20100.9232.5100000mg/l0.9200000
12/1/20100.9731.2900000mg/l0.9700000
1/1/20111.3931.3200000mg/l1.3900000
2/1/20110.9531.1500000mg/l0.9500000
3/1/20111.0531.0000000mg/l1.0500000
4/1/20111.1731.0800000mg/l1.1700000
5/1/20111.0931.1000000mg/l1.0900000
6/1/20112.5231.3600000mg/l2.5200000
7/1/20110.9831.2900000mg/l0.9800000
8/1/20111.1031.3200000mg/l1.1000000
9/1/20111.4931.3900000mg/l1.4900000
10/1/20111.1931.4000000mg/l1.1900000
11/1/20111.2431.4200000mg/l1.2400000
12/1/20110.6631.1100000mg/l0.6600000
1/1/20120.8711.0900000mg/l0.8700000
2/1/20123.6231.5100000mg/l3.6200000
3/1/20120.7331.3900000mg/l0.7300000
4/1/20120.6431.2900000mg/l0.6400000
5/1/20120.9731.2500000mg/l0.9700000
6/1/20122.1531.5000000mg/l2.1500000
7/1/20121.3331.5700000mg/l1.3300000
8/1/20121.9131.2900000mg/l1.9100000
9/1/20120.6831.2800000mg/l0.6800000
10/1/20120.5531.2700000mg/l0.5500000
11/1/20120.5031.1900000mg/l0.5000000
12/1/20120.5030.9100000mg/l0.5000000
1/1/20130.5030.7700000mg/l0.5000000
2/1/20130.5030.5400000mg/l0.5000000
3/1/20130.5030.5100000mg/l0.5000000
4/1/20130.5030.5000000mg/l0.5000000
5/1/20130.5030.5000000mg/l0.5000000
6/1/20131.6030.6800000mg/l1.6000000
7/1/20130.5430.6900000mg/l0.5400000
8/1/20131.2730.8200000mg/l1.2700000
9/1/20130.8030.8700000mg/l0.8000000
10/1/20130.9230.9400000mg/l0.9200000
11/1/20130.5020.9400000mg/l0.5000000
12/1/20130.5030.7600000mg/l0.5000000

Color

Units: PCU Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

     

Enterococcus Group Bacteria

Units: cfu/100ml Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

     
Target
cfu/100ml
Threshold
cfu/100ml

Nitrogen, Ammonia + Ammonium as N

Units: ug/l Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

     
1/1/200971.00171.0000000ug/l71.0000000
2/1/200967.00169.0000000ug/l67.0000000
3/1/2009297.001145.0000000ug/l297.0000000
4/1/2009144.001144.7500000ug/l144.0000000
5/1/2009112.001138.2000000ug/l112.0000000
6/1/2009293.001164.0000000ug/l293.0000000
7/1/2009104.001169.5000000ug/l104.0000000
8/1/2009244.001199.0000000ug/l244.0000000
9/1/2009314.001201.8300000ug/l314.0000000
10/1/2009193.001210.0000000ug/l193.0000000
11/1/200998.001207.6700000ug/l98.0000000
12/1/200949.001167.0000000ug/l49.0000000
1/1/2010126.003170.6700000ug/l126.0000000
2/1/201072.003142.0000000ug/l72.0000000
3/1/201091.003104.8300000ug/l91.0000000
4/1/201082.00386.3300000ug/l82.0000000
6/1/20103680.003810.2000000ug/l3680.0000000
7/1/2010158.003816.6000000ug/l158.0000000
8/1/2010176.002837.4000000ug/l176.0000000
9/1/201090.506837.3000000ug/l86.2200000
10/1/201055.003831.9000000ug/l55.0000000
11/1/201072.003705.2500000ug/l72.0000000
12/1/201036.00397.9200000ug/l36.0000000
1/1/201149.00379.7500000ug/l49.0000000
2/1/201171.00362.2500000ug/l71.0000000
3/1/201142.00354.1700000ug/l42.0000000
4/1/201162.00355.3300000ug/l62.0000000
5/1/201134.00349.0000000ug/l34.0000000
6/1/201137.00349.1700000ug/l37.0000000
7/1/201114.00343.3300000ug/l14.0000000
8/1/201149.00339.6700000ug/l49.0000000
9/1/201169.00344.1700000ug/l69.0000000
10/1/201177.00346.6700000ug/l77.0000000
11/1/201159.00350.8300000ug/l59.0000000
12/1/2011206.00379.0000000ug/l206.0000000
1/1/201232.00382.0000000ug/l32.0000000
2/1/20128.00375.1700000ug/l8.0000000
3/1/201278.00376.6700000ug/l78.0000000
4/1/201253.33372.7200000ug/l53.3200000
5/1/201215.00365.3900000ug/l15.0000000
6/1/2012145.00355.2200000ug/l145.0000000
7/1/201266.00360.8900000ug/l66.0000000
8/1/201232.00364.8900000ug/l32.0000000
9/1/201215.00354.3900000ug/l15.0000000
10/1/201227.00350.0000000ug/l27.0000000
11/1/201240.00354.1700000ug/l40.0000000
12/1/201225.00334.1700000ug/l25.0000000
1/1/201318.00326.1700000ug/l18.0000000
2/1/20138.00322.1700000ug/l8.0000000
3/1/20138.00321.0000000ug/l8.0000000
4/1/201316.00319.1700000ug/l16.0000000
5/1/201316.00315.1700000ug/l16.0000000
6/1/20138.00312.3300000ug/l8.0000000
7/1/201316.00312.0000000ug/l16.0000000
8/1/201316.00313.3300000ug/l16.0000000
9/1/201316.00314.6700000ug/l16.0000000
10/1/201327.00316.5000000ug/l27.0000000
11/1/20138.00215.1700000ug/l8.0000000
12/1/20138.00315.1700000ug/l8.0000000

Nitrogen, Kjeldahl

Units: ug/l Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

     
1/1/2009806.001806.0000000ug/l806.0000000
2/1/2009486.001646.0000000ug/l486.0000000
3/1/20091320.001870.6700000ug/l1320.0000000
4/1/2009799.001852.7500000ug/l799.0000000
5/1/2009734.001829.0000000ug/l734.0000000
6/1/2009859.001834.0000000ug/l859.0000000
7/1/2009748.001824.3300000ug/l748.0000000
8/1/2009585.001840.8300000ug/l585.0000000
9/1/2009867.001765.3300000ug/l867.0000000
10/1/2009717.001751.6700000ug/l717.0000000
11/1/20091360.001856.0000000ug/l1360.0000000
12/1/2009985.001877.0000000ug/l985.0000000
1/1/2010888.003900.3300000ug/l888.0000000
2/1/2010796.003935.5000000ug/l796.0000000
3/1/20101010.003959.3300000ug/l1010.0000000
4/1/20101060.0031016.5000000ug/l1060.0000000
6/1/20104020.0031554.8000000ug/l4020.0000000
7/1/20101220.0031621.2000000ug/l1220.0000000
8/1/20101250.0021712.0000000ug/l1250.0000000
9/1/20101175.0061745.0000000ug/l1174.4800000
10/1/2010929.0031718.8000000ug/l929.0000000
11/1/2010916.0031585.0000000ug/l916.0000000
12/1/20101110.0031100.0000000ug/l1110.0000000
1/1/2011931.0031051.8300000ug/l931.0000000
2/1/20111110.0031028.5000000ug/l1110.0000000
3/1/2011872.003978.0000000ug/l872.0000000
4/1/2011870.003968.1700000ug/l870.0000000
5/1/2011832.003954.1700000ug/l832.0000000
6/1/2011990.003934.1700000ug/l990.0000000
7/1/2011857.003921.8300000ug/l857.0000000
8/1/2011980.003900.1700000ug/l980.0000000
9/1/20111080.003934.8300000ug/l1080.0000000
10/1/2011783.003920.3300000ug/l783.0000000
11/1/2011874.003927.3300000ug/l874.0000000
12/1/2011734.003884.6700000ug/l734.0000000
1/1/2012762.003868.8300000ug/l762.0000000
2/1/20121100.003888.8300000ug/l1100.0000000
3/1/2012868.003853.5000000ug/l868.0000000
4/1/2012770.003851.3300000ug/l770.0000000
5/1/2012847.003846.8300000ug/l847.0000000
6/1/20121310.003942.8300000ug/l1310.0000000
7/1/20121070.003994.1700000ug/l1070.0000000
8/1/20121020.003980.8300000ug/l1020.0000000
9/1/2012850.003977.8300000ug/l850.0000000
10/1/2012927.0031004.0000000ug/l927.0000000
11/1/2012724.003983.5000000ug/l724.0000000
12/1/2012828.003903.1700000ug/l828.0000000
1/1/2013566.003819.1700000ug/l566.0000000
2/1/2013526.003736.8300000ug/l526.0000000
3/1/2013643.003702.3300000ug/l643.0000000
4/1/2013268.003592.5000000ug/l268.0000000
5/1/2013722.003592.1700000ug/l722.0000000
6/1/2013885.003601.6700000ug/l885.0000000
7/1/20131150.003699.0000000ug/l1150.0000000
8/1/20131070.003789.6700000ug/l1070.0000000
9/1/20131280.003895.8300000ug/l1280.0000000
10/1/20131030.0031022.8300000ug/l1030.0000000
11/1/2013895.0021051.6700000ug/l895.0000000
12/1/2013757.0031030.3300000ug/l757.0000000

Nitrogen, Nitrite + Nitrate as N

Units: ug/l Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

     
1/1/200978.00178.0000000ug/l78.0000000
2/1/200960.00169.0000000ug/l60.0000000
3/1/2009325.001154.3300000ug/l325.0000000
4/1/2009476.001234.7500000ug/l476.0000000
5/1/200965.001200.8000000ug/l65.0000000
6/1/2009233.001206.1700000ug/l233.0000000
7/1/2009164.001220.5000000ug/l164.0000000
8/1/2009134.001232.8300000ug/l134.0000000
9/1/2009212.001214.0000000ug/l212.0000000
10/1/2009270.001179.6700000ug/l270.0000000
11/1/2009206.001203.1700000ug/l206.0000000
12/1/2009220.001201.0000000ug/l220.0000000
1/1/2010167.003201.5000000ug/l167.0000000
2/1/201089.003194.0000000ug/l89.0000000
3/1/201080.003172.0000000ug/l80.0000000
4/1/201052.003135.6700000ug/l52.0000000
6/1/201040.00385.6000000ug/l40.0000000
7/1/2010172.00386.6000000ug/l172.0000000
8/1/201098.00288.4000000ug/l98.0000000
9/1/2010134.00699.2000000ug/l68.7800000
10/1/2010416.003172.0000000ug/l416.0000000
11/1/2010307.003194.5000000ug/l307.0000000
12/1/201077.003200.6700000ug/l77.0000000
1/1/2011184.003202.6700000ug/l184.0000000
2/1/2011575.003282.1700000ug/l575.0000000
3/1/201185.003274.0000000ug/l85.0000000
4/1/2011288.003252.6700000ug/l288.0000000
5/1/2011234.003240.5000000ug/l234.0000000
6/1/201182.003241.3300000ug/l82.0000000
7/1/2011173.003239.5000000ug/l173.0000000
8/1/2011173.003172.5000000ug/l173.0000000
9/1/2011348.003216.3300000ug/l348.0000000
10/1/2011227.003206.1700000ug/l227.0000000
11/1/2011112.003185.8300000ug/l112.0000000
12/1/2011155.003198.0000000ug/l155.0000000
1/1/201283.003183.0000000ug/l83.0000000
2/1/201271.003166.0000000ug/l71.0000000
3/1/2012181.003138.1700000ug/l181.0000000
4/1/2012195.003132.8300000ug/l195.0000000
5/1/201257.003123.6700000ug/l57.0000000
6/1/2012114.003116.8300000ug/l114.0000000
7/1/2012134.003125.3300000ug/l134.0000000
8/1/201298.003129.8300000ug/l98.0000000
9/1/2012227.003137.5000000ug/l227.0000000
10/1/2012185.003135.8300000ug/l185.0000000
11/1/2012159.003152.8300000ug/l159.0000000
12/1/2012166.003161.5000000ug/l166.0000000
1/1/2013203.003173.0000000ug/l203.0000000
2/1/201364.003167.3300000ug/l64.0000000
3/1/201364.003140.1700000ug/l64.0000000
4/1/201334.003115.0000000ug/l34.0000000
5/1/201322.00392.1700000ug/l22.0000000
6/1/201385.00378.6700000ug/l85.0000000
7/1/2013256.00387.5000000ug/l256.0000000
8/1/2013152.003102.1700000ug/l152.0000000
9/1/2013309.003143.0000000ug/l309.0000000
10/1/2013123.003157.8300000ug/l123.0000000
11/1/2013252.002196.1700000ug/l252.0000000
12/1/2013169.003210.1700000ug/l169.0000000

Oysters

Units: Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

     
1/1/200680.90380.9000000%80.9000000
1/1/200776.86376.8600000%76.8600000
1/1/200871.52371.5200000%71.5200000
1/1/200975.39375.3900000%75.3900000
1/1/201071.88371.8800000%71.8800000
1/1/201185.24385.2400000%85.2400000
1/1/201381.26481.2600000%81.2600000

pH

Units: None Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

     
1/1/20097.6317.6300000None7.6300000
2/1/20097.6817.6600000None7.6800000
3/1/20097.4017.5700000None7.4000000
4/1/20097.7617.6200000None7.7600000
6/1/20097.5917.6100000None7.5900000
7/1/20097.8917.6600000None7.8900000
9/1/20097.3517.6500000None7.3500000
10/1/20097.3317.5400000None7.3300000
11/1/20097.6017.5500000None7.6000000
1/1/20107.6937.4900000None7.6900000
2/1/20107.9337.5800000None7.9300000
3/1/20107.5337.6200000None7.5300000
4/1/20107.7337.7000000None7.7300000
8/1/20107.5627.6100000None7.5600000
9/1/20107.8137.7000000None7.8100000
11/1/20107.4337.6000000None7.4300000
1/1/20117.9437.6900000None7.9400000
2/1/20117.8837.7700000None7.8800000
3/1/20117.9737.8100000None7.9700000
4/1/20117.7837.8000000None7.7800000
5/1/20117.9637.9100000None7.9600000
1/1/20128.0638.0600000None8.0600000
2/1/20128.0538.0600000None8.0500000
3/1/20128.0138.0400000None8.0100000
4/1/20127.8537.9900000None7.8500000
5/1/20127.8637.9700000None7.8600000
7/1/20127.1537.7800000None7.1500000
8/1/20127.3737.6500000None7.3700000
9/1/20127.4837.5400000None7.4800000
10/1/20127.4737.4700000None7.4700000
11/1/20127.7937.4500000None7.7900000
12/1/20127.8137.5100000None7.8100000
1/1/20137.6237.5900000None7.6200000
2/1/20137.6637.6400000None7.6600000
3/1/20137.7337.6800000None7.7300000
4/1/20137.4837.6800000None7.4800000
5/1/20137.7937.6800000None7.7900000
6/1/20137.2737.5900000None7.2700000
7/1/20137.6537.6000000None7.6500000
8/1/20137.4237.5600000None7.4200000
9/1/20137.3837.5000000None7.3800000
10/1/20137.5337.5100000None7.5300000
12/1/20137.7637.5500000None7.7600000

Salinity

Units: PSS Year
2013
Historical
period of record
High 0.7 29.5
Mean 0.49 1.19 5.75303
Low 0.29 0.00
No. of Samples 33 244

Five-year Rolling Average Graph

     
1/1/20090.6210.6200000PSS0.6200000
2/1/20090.5910.6100000PSS0.5900000
3/1/200914.7515.3200000PSS14.7500000
4/1/20090.6214.1500000PSS0.6200000
6/1/20090.7113.4600000PSS0.7100000
7/1/20090.4913.4300000PSS0.4900000
9/1/20090.4510.5700000PSS0.4500000
10/1/200914.4314.0200000PSS14.4300000
11/1/20090.4513.3100000PSS0.4500000
1/1/20100.4733.9500000PSS0.4700000
2/1/20100.5133.2600000PSS0.5100000
3/1/20100.4033.2500000PSS0.4000000
4/1/20100.4130.4500000PSS0.4100000
8/1/20100.2720.3600000PSS0.2700000
9/1/20100.4730.3800000PSS0.4700000
11/1/201016.1935.6400000PSS16.1900000
1/1/20110.6534.4000000PSS0.6500000
2/1/20110.6434.4900000PSS0.6400000
3/1/20110.6034.5200000PSS0.6000000
4/1/20110.6133.7400000PSS0.6100000
5/1/20110.6030.6200000PSS0.6000000
1/1/20120.6830.6800000PSS0.6800000
2/1/20120.7430.7100000PSS0.7400000
3/1/20120.6730.7000000PSS0.6700000
4/1/20120.6530.6900000PSS0.6500000
5/1/20120.7630.7000000PSS0.7600000
7/1/20120.3330.6300000PSS0.3300000
8/1/20120.2730.5400000PSS0.2700000
9/1/20120.5230.5100000PSS0.5200000
10/1/20120.4630.4700000PSS0.4600000
11/1/20121.1530.5500000PSS1.1500000
12/1/20120.6430.5600000PSS0.6400000
1/1/20130.6330.6100000PSS0.6300000
2/1/20130.6830.6800000PSS0.6800000
3/1/20130.6530.7000000PSS0.6500000
4/1/20130.5930.7200000PSS0.5900000
5/1/20130.6330.6400000PSS0.6300000
6/1/20130.3630.5900000PSS0.3600000
7/1/20130.3930.5500000PSS0.3900000
8/1/20130.2930.4900000PSS0.2900000
9/1/20130.3430.4300000PSS0.3400000
10/1/20130.5330.4200000PSS0.5300000
12/1/20130.5330.4200000PSS0.5300000

Specific conductance

Units: umho Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

     
1/1/20091235.0011235.0000000umho1235.0000000
2/1/20091182.0011208.5000000umho1182.0000000
3/1/200924303.0018906.6700000umho24303.0000000
4/1/20091257.0016994.2500000umho1257.0000000
6/1/20091430.0015881.4000000umho1430.0000000
7/1/2009997.0015833.8000000umho997.0000000
9/1/2009931.0011153.7500000umho931.0000000
10/1/200923861.0016804.7500000umho23861.0000000
11/1/2009904.0015624.6000000umho904.0000000
1/1/2010955.0036662.7500000umho955.0000000
2/1/20101033.0035536.8000000umho1033.0000000
3/1/2010822.0035515.0000000umho822.0000000
4/1/2010833.003909.4000000umho833.0000000
8/1/20100.562551.8500000umho0.5600000
9/1/20100.953278.1700000umho0.9500000
11/1/201026468.0038823.1700000umho26468.0000000
1/1/20111287.0036939.1300000umho1287.0000000
2/1/20111291.0037261.7400000umho1291.0000000
3/1/20111206.0037563.0000000umho1206.0000000
4/1/20111227.0036295.8000000umho1227.0000000
5/1/20111222.0031246.6000000umho1222.0000000
1/1/20121364.0031364.0000000umho1364.0000000
2/1/20121468.0031416.0000000umho1468.0000000
3/1/20121346.0031392.6700000umho1346.0000000
4/1/20121307.0031371.2500000umho1307.0000000
5/1/20121530.0031403.0000000umho1530.0000000
7/1/2012690.0031268.2000000umho690.0000000
8/1/2012560.0031086.6000000umho560.0000000
9/1/20121055.0031028.4000000umho1055.0000000
10/1/2012936.003954.2000000umho936.0000000
11/1/20122241.0031096.4000000umho2241.0000000
12/1/20121282.0031127.3300000umho1282.0000000
1/1/20131253.0031221.1700000umho1253.0000000
2/1/20131347.0031352.3300000umho1347.0000000
3/1/20131285.0031390.6700000umho1285.0000000
4/1/20131180.0031431.3300000umho1180.0000000
5/1/20131274.0031270.1700000umho1274.0000000
6/1/2013745.0031180.6700000umho745.0000000
7/1/2013806.0031106.1700000umho806.0000000
8/1/2013595.003980.8300000umho595.0000000
9/1/2013697.003882.8300000umho697.0000000
10/1/20131076.003865.5000000umho1076.0000000
12/1/20131064.003847.6000000umho1064.0000000

Temperature, water

Units: deg F Year
2013
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Rolling Average Graph

     
1/1/200964.63164.6300000deg F64.6300000
2/1/200963.37164.0000000deg F63.3700000
3/1/200975.52167.8400000deg F75.5200000
4/1/200978.53170.5100000deg F78.5300000
6/1/200987.31173.8700000deg F87.3100000
7/1/200987.30178.4100000deg F87.3000000
9/1/200985.91184.7600000deg F85.9100000
10/1/200978.75184.8200000deg F78.7500000
11/1/200966.47181.1500000deg F66.4700000
1/1/201051.64270.6900000deg F51.6400000
2/1/201066.54269.8600000deg F66.5400000
3/1/201067.64266.2100000deg F67.6400000
4/1/201075.60265.5800000deg F75.6000000
8/1/201081.05274.7600000deg F81.0500000
9/1/201084.42280.3600000deg F84.4200000
11/1/201076.42280.6300000deg F76.4200000
1/1/201164.85276.6900000deg F64.8500000
2/1/201175.81275.3800000deg F75.8100000
3/1/201179.45274.1300000deg F79.4500000
4/1/201183.25275.9600000deg F83.2500000
5/1/201182.33277.1400000deg F82.3300000
1/1/201269.28269.2800000deg F69.2800000
2/1/201271.37270.3300000deg F71.3700000
3/1/201276.87272.5100000deg F76.8700000
4/1/201274.37272.9700000deg F74.3700000
5/1/201286.23275.6200000deg F86.2300000
7/1/201284.16278.6000000deg F84.1600000
8/1/201282.09280.7400000deg F82.0900000
9/1/201284.51282.2700000deg F84.5100000
10/1/201276.55282.7100000deg F76.5500000
11/1/201265.28278.5200000deg F65.2800000
12/1/201269.89277.0800000deg F69.8900000
1/1/201368.02274.3900000deg F68.0200000
2/1/201369.10272.2300000deg F69.1000000
3/1/201360.39268.2100000deg F60.3900000
4/1/201376.69268.2300000deg F76.6900000
5/1/201378.98270.5100000deg F78.9800000
6/1/201384.79273.0000000deg F84.7900000
7/1/201385.60275.9300000deg F85.6000000
8/1/201383.43278.3100000deg F83.4300000
9/1/201383.80282.2200000deg F83.8000000
10/1/201374.95281.9300000deg F74.9500000
12/1/201368.67279.2900000deg F68.6700000

Turbidity

Units: NTU Year
2013
Historical
period of record
High 4.9 42.0
Mean 1.41 3.3 5.29041
Low 0.30 0.30
No. of Samples 35 323

Five-year Rolling Average Graph

     
1/1/20091.4811.4800000NTU1.4800000
2/1/20091.0911.2900000NTU1.0900000
3/1/200913.8015.4600000NTU13.8000000
4/1/20092.3014.6700000NTU2.3000000
5/1/20091.8314.1000000NTU1.8300000
6/1/20091.2113.6200000NTU1.2100000
7/1/20091.2313.5800000NTU1.2300000
8/1/20091.2713.6100000NTU1.2700000
9/1/20094.4012.0400000NTU4.4000000
10/1/20091.6811.9400000NTU1.6800000
11/1/20094.7012.4200000NTU4.7000000
12/1/20093.4012.7800000NTU3.4000000
1/1/20103.8033.2100000NTU3.8000000
2/1/20103.6033.6000000NTU3.6000000
3/1/20104.4033.6000000NTU4.4000000
4/1/20102.6033.7500000NTU2.6000000
6/1/201042.00311.2800000NTU42.0000000
7/1/201012.60313.0400000NTU12.6000000
8/1/20107.20213.7600000NTU7.2000000
9/1/20106.75614.2300000NTU6.5200000
10/1/20104.20314.5500000NTU4.2000000
11/1/20103.60312.7300000NTU3.6000000
12/1/20103.1036.2400000NTU3.1000000
1/1/20114.2034.8400000NTU4.2000000
2/1/20112.5034.0600000NTU2.5000000
3/1/20112.8033.4000000NTU2.8000000
4/1/20114.4033.4300000NTU4.4000000
5/1/20113.7033.4500000NTU3.7000000
6/1/20112.6033.3700000NTU2.6000000
7/1/20112.7033.1200000NTU2.7000000
8/1/20113.8033.3300000NTU3.8000000
9/1/20117.2034.0700000NTU7.2000000
10/1/20118.2034.7000000NTU8.2000000
11/1/201134.0039.7500000NTU34.0000000
12/1/20111.7439.6100000NTU1.7400000
1/1/20122.2039.5200000NTU2.2000000
2/1/20122.9039.3700000NTU2.9000000
3/1/20124.0038.8400000NTU4.0000000
4/1/20122.8037.9400000NTU2.8000000
5/1/20122.8032.7400000NTU2.8000000
6/1/20123.9033.1000000NTU3.9000000
7/1/20121.9033.0500000NTU1.9000000
8/1/20123.6033.1700000NTU3.6000000
9/1/20125.2033.3700000NTU5.2000000
10/1/20122.9033.3800000NTU2.9000000
11/1/20121.1033.1000000NTU1.1000000
12/1/20121.4032.6800000NTU1.4000000
1/1/20130.9032.5200000NTU0.9000000
2/1/20130.7032.0300000NTU0.7000000
3/1/20130.3031.2200000NTU0.3000000
4/1/20130.4030.8000000NTU0.4000000
5/1/20130.3030.6700000NTU0.3000000
6/1/20133.1030.9500000NTU3.1000000
7/1/20133.7031.4200000NTU3.7000000
8/1/20133.9031.9500000NTU3.9000000
9/1/20134.9032.7200000NTU4.9000000
10/1/20133.4033.2200000NTU3.4000000
11/1/20132.2023.5300000NTU2.2000000
12/1/20132.0033.3500000NTU2.0000000
Other Measures of Creek Health

Oysters

Because they are immobile and will tolerate a fairly wide salinity range, eastern oysters (Crassostrea virginica) are valuable as an indicator of the relative health of aquatic ecosystems in the tidally-influenced portions of coastal creeks. Sarasota County has established an oyster monitoring program to track the location, types, and status of oyster reefs. Data from this monitoring program is shown below. Learn more about Oysters »

Loading oyster site map...
Most Recent Sarasota County Oyster Monitoring Program Data
Icon Site ID Year Dead Live Total % Live
1 CAT1 2013 0 0 0 0
2 NC1 2013 116 540 656 82
3 NC2 2013 0 0 0 0
4 NC2A 2013 21 54 75 72

Impervious Features

Catfish Creek is located within the Little Sarasota Bay Watershed. View details about the Little Sarasota Bay Watershed »

Rain that falls on land that is in a natural state is absorbed and filtered by soils and vegetation as it makes it way into underground aquifers. However, in developed areas, "impervious surfaces" impede this process and contribute to polluted urban runoff entering surface waters. These surfaces include human infrastructure like roads, sidewalks, driveways and parking lots that are covered by impenetrable materials such as asphalt, concrete, brick and stone, as well as buildings and other permanent structures. Soils that have been disturbed and compacted by urban development are often impervious as well. Learn more about Impervious Features »

The Sarasota County Stormwater Environmental Utility (SEU) mapped impervious surfaces in the County in 2013. A map showing impervious surfaces can be viewed using the Water Atlas Map Viewer tool.

of the land area within the Catfish Creek Basin is covered by impervious surfaces.

Loading interactive chart...

Land Use / Land Cover

Catfish Creek is located within the Little Sarasota Bay Watershed. View details about the Little Sarasota Bay Watershed »

Land use within a creek's watershed has a major effect on its water quality. In general, less development means better water quality. Land Cover/Land Use classifications categorize land in terms of its observed physical surface characteristics (e.g. upland or wetland), and also reflect the types of activity that are taking place on it (agriculture, urban/built-up, utilities, etc.). Florida uses as its standard a set of statewide classifications which were developed by the Florida Department of Transportation. Learn more about Land Use and Land Cover »

Loading interactive chart...

Data Sources

The data sources listed below provided water quality data used to create the report on this page. Not all data sources provided data for every creek, and not every Creek Conditions Report used data from all listed data sources. While some data sources have no data for the scored year, they provided period-of-record (historical high, mean, low) data. Click on a data source name to review its metadata.