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Catfish Creek Condition Report for 2011

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Pass

4 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
2011
Historical
period of record
High 0.0311 0.0846
Mean 0.0193 0.0136 0.01710401
Low 0.0077 0.0009
No. of Samples 12 80

Five-year Trend Graph

      
1/1/200713.8010.0138000mg/l0.0138000
2/1/200713.1010.0134500mg/l0.0131000
3/1/20076.9110.0112700mg/l0.0069100
4/1/20076.0610.0099700mg/l0.0060600
5/1/200718.8010.0117300mg/l0.0188000
6/1/200728.2010.0144800mg/l0.0282000
7/1/200784.6010.0262800mg/l0.0846000
8/1/200735.5010.0300100mg/l0.0355000
9/1/200727.1010.0333800mg/l0.0271000
10/1/200724.5010.0364500mg/l0.0245000
11/1/200765.7010.0442700mg/l0.0657000
12/1/200713.7010.0418500mg/l0.0137000
1/1/20088.1810.0291100mg/l0.0081800
2/1/20086.3110.0242500mg/l0.0063100
3/1/200841.0010.0265700mg/l0.0410000
4/1/200818.0010.0254800mg/l0.0180000
5/1/200827.9010.0191800mg/l0.0279000
6/1/200841.4010.0238000mg/l0.0414000
7/1/200833.1010.0279500mg/l0.0331000
8/1/200837.6010.0331700mg/l0.0376000
9/1/20088.9910.0278300mg/l0.0089900
10/1/200841.7010.0317800mg/l0.0417000
11/1/200817.1010.0299800mg/l0.0171000
12/1/200815.8010.0257200mg/l0.0158000
2/1/200912.5010.0192200mg/l0.0125000
3/1/200954.0010.0282200mg/l0.0540000
4/1/20098.7510.0216300mg/l0.0087500
5/1/200917.2010.0216500mg/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
1/1/20107.7310.0353600mg/l0.0077300
2/1/20109.4410.0312100mg/l0.0094400
3/1/201022.1010.0314500mg/l0.0221000
4/1/201013.5010.0295100mg/l0.0135000
6/1/201024.2010.0153900mg/l0.0242000
7/1/201024.0010.0186500mg/l0.0240000
8/1/201021.6010.0210800mg/l0.0216000
9/1/201043.3520.0253300mg/l0.0424800
10/1/201012.0010.0250300mg/l0.0120000
11/1/20104.6010.0216300mg/l0.0046000
12/1/201012.1010.0196100mg/l0.0121000
1/1/201112.0010.0176100mg/l0.0120000
2/1/201110.5010.0157600mg/l0.0105000
3/1/201123.0010.0123700mg/l0.0230000
4/1/201124.2010.0144000mg/l0.0242000
5/1/201128.8010.0184300mg/l0.0288000
6/1/201129.0010.0212500mg/l0.0290000
7/1/201119.4010.0224800mg/l0.0194000
8/1/20117.6910.0220200mg/l0.0076900
9/1/201121.2010.0217200mg/l0.0212000
10/1/201126.7010.0221300mg/l0.0267000
11/1/201131.1010.0225200mg/l0.0311000
12/1/201116.9010.0205000mg/l0.0169000
Target
mg/l
Threshold
0.02 mg/l
Pass

Nitrogen, Total

Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 1.529 1.906
Mean 1.1354 1.0457 0.25075802
Low 0.914 0.431
No. of Samples 12 80

Five-year Trend Graph

      
1/1/2007757.0010.7570000mg/l0.7570000
2/1/2007681.5010.7192500mg/l0.6815000
3/1/2007961.0010.7998300mg/l0.9610000
4/1/20071068.0010.8668800mg/l1.0680000
5/1/20071072.0010.9079000mg/l1.0720000
6/1/20071179.0010.9530800mg/l1.1790000
7/1/20071232.0011.0322500mg/l1.2320000
8/1/20071015.5011.0879200mg/l1.0155000
9/1/20071111.0011.1129200mg/l1.1110000
10/1/20071158.0011.1279200mg/l1.1580000
11/1/2007752.0011.0745800mg/l0.7520000
12/1/2007526.0010.9657500mg/l0.5260000
1/1/2008431.0010.8322500mg/l0.4310000
2/1/2008992.0010.8283300mg/l0.9920000
3/1/2008506.0010.7275000mg/l0.5060000
4/1/20081192.0010.7331700mg/l1.1920000
5/1/20081232.0010.8131700mg/l1.2320000
6/1/20081152.0010.9175000mg/l1.1520000
7/1/2008935.0011.0015000mg/l0.9350000
8/1/20081200.0011.0361700mg/l1.2000000
9/1/20081098.0011.1348300mg/l1.0980000
10/1/2008800.0011.0695000mg/l0.8000000
11/1/2008889.0011.0123300mg/l0.8890000
12/1/20081355.0011.0461700mg/l1.3550000
2/1/2009644.0010.9572000mg/l0.6440000
3/1/20091212.0010.9800000mg/l1.2120000
4/1/2009796.0010.9792000mg/l0.7960000
5/1/2009874.0010.9762000mg/l0.8740000
6/1/20091142.0010.9336000mg/l1.1420000
7/1/20091012.0010.9466700mg/l1.0120000
8/1/2009766.0010.9670000mg/l0.7660000
9/1/20091145.0010.9558300mg/l1.1450000
10/1/2009994.0010.9888300mg/l0.9940000
11/1/20091297.0011.0593300mg/l1.2970000
12/1/20091479.0011.1155000mg/l1.4790000
1/1/20101035.0011.1193300mg/l1.0350000
2/1/2010866.0011.1360000mg/l0.8660000
3/1/20101219.0011.1483300mg/l1.2190000
4/1/20101203.0011.1831700mg/l1.2030000
6/1/20101482.0011.1610000mg/l1.4820000
7/1/2010979.0011.1498000mg/l0.9790000
8/1/20101359.0011.2484000mg/l1.3590000
9/1/20101262.0021.2570000mg/l1.2613700
10/1/2010874.0011.1912000mg/l0.8740000
11/1/20101152.0011.1846700mg/l1.1520000
12/1/20101072.0011.1163300mg/l1.0720000
1/1/20111086.0011.1341700mg/l1.0860000
2/1/20111529.0011.1625000mg/l1.5290000
3/1/20111042.0011.1258300mg/l1.0420000
4/1/20111096.0011.1628300mg/l1.0960000
5/1/20111378.0011.2005000mg/l1.3780000
6/1/20111099.0011.2050000mg/l1.0990000
7/1/2011977.0011.1868300mg/l0.9770000
8/1/20111164.0011.1260000mg/l1.1640000
9/1/20111324.0011.1730000mg/l1.3240000
10/1/20111120.0011.1770000mg/l1.1200000
11/1/20111037.0011.1201700mg/l1.0370000
12/1/2011914.0011.0893300mg/l0.9140000
Pass

Phosphorus, Total

Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 0.174 0.63
Mean 0.1388 0.1259 0.09124268
Low 0.107 0.036
No. of Samples 4 52

Five-year Trend Graph

      
1/1/200772.0010.0720000mg/l0.0720000
2/1/200778.0010.0750000mg/l0.0780000
3/1/200794.0010.0813300mg/l0.0940000
4/1/200758.0010.0755000mg/l0.0580000
5/1/2007108.0010.0820000mg/l0.1080000
6/1/2007136.0010.0910000mg/l0.1360000
7/1/2007226.0010.1166700mg/l0.2260000
8/1/2007223.0010.1408300mg/l0.2230000
9/1/2007218.0010.1615000mg/l0.2180000
10/1/2007212.0010.1871700mg/l0.2120000
11/1/200795.0010.1850000mg/l0.0950000
12/1/200779.0010.1755000mg/l0.0790000
1/1/200850.0010.1461700mg/l0.0500000
2/1/2008166.0010.1366700mg/l0.1660000
3/1/200865.0010.1111700mg/l0.0650000
4/1/200886.0010.0901700mg/l0.0860000
5/1/2008154.0010.1000000mg/l0.1540000
6/1/2008129.0010.1083300mg/l0.1290000
7/1/200890.0010.1150000mg/l0.0900000
8/1/2008122.0010.1076700mg/l0.1220000
9/1/2008188.0010.1281700mg/l0.1880000
10/1/200867.0010.1250000mg/l0.0670000
11/1/200876.0010.1120000mg/l0.0760000
12/1/200882.0010.1041700mg/l0.0820000
2/1/200955.0010.0936000mg/l0.0550000
3/1/200987.0010.0734000mg/l0.0870000
4/1/200970.0010.0740000mg/l0.0700000
5/1/200977.0010.0742000mg/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
1/1/201068.0010.1101700mg/l0.0680000
2/1/201080.0010.0995000mg/l0.0800000
3/1/2010137.0010.1010000mg/l0.1370000
4/1/2010105.0010.1055000mg/l0.1050000
6/1/2010316.0010.1412000mg/l0.3160000
7/1/2010171.0010.1618000mg/l0.1710000
8/1/2010264.0010.1986000mg/l0.2640000
9/1/2010167.5020.2047000mg/l0.1674100
10/1/201091.0010.2019000mg/l0.0910000
11/1/201083.0010.1820800mg/l0.0830000
12/1/201084.0010.1434200mg/l0.0840000
1/1/201176.0010.1275800mg/l0.0760000
2/1/201166.0010.0945800mg/l0.0660000
3/1/201188.0010.0813300mg/l0.0880000
4/1/201197.0010.0823300mg/l0.0970000
5/1/201184.0010.0825000mg/l0.0840000
6/1/2011124.0010.0891700mg/l0.1240000
7/1/2011107.0010.0943300mg/l0.1070000
8/1/2011161.0010.1101700mg/l0.1610000
9/1/201191.0010.1106700mg/l0.0910000
10/1/2011174.0010.1235000mg/l0.1740000
11/1/201174.0010.1218300mg/l0.0740000
12/1/201164.0010.1118300mg/l0.0640000
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
2011
Historical
period of record
High 97.00 172.70
Mean 88.46 88.61 31.96582
Low 72.70 33.10
No. of Samples 5 79

Five-year Trend Graph

      
1/1/200783.60183.6000000percent (%)83.6000000
2/1/2007138.401111.0000000percent (%)138.4000000
3/1/200795.201105.7300000percent (%)95.2000000
4/1/2007119.801109.2500000percent (%)119.8000000
5/1/2007108.501109.1000000percent (%)108.5000000
6/1/2007113.401109.8200000percent (%)113.4000000
7/1/200787.301110.4300000percent (%)87.3000000
8/1/2007121.601107.6300000percent (%)121.6000000
9/1/200733.10197.2800000percent (%)33.1000000
10/1/2007148.401102.0500000percent (%)148.4000000
11/1/2007104.601101.4000000percent (%)104.6000000
12/1/2007104.00199.8300000percent (%)104.0000000
1/1/2008128.001106.6200000percent (%)128.0000000
2/1/200843.10193.5300000percent (%)43.1000000
3/1/2008114.501107.1000000percent (%)114.5000000
4/1/200883.30196.2500000percent (%)83.3000000
5/1/2008105.40196.3800000percent (%)105.4000000
6/1/2008101.10195.9000000percent (%)101.1000000
7/1/2008127.10195.7500000percent (%)127.1000000
8/1/200844.00195.9000000percent (%)44.0000000
9/1/200840.80183.6200000percent (%)40.8000000
10/1/2008116.60189.1700000percent (%)116.6000000
11/1/200878.20184.6300000percent (%)78.2000000
12/1/200895.50183.7000000percent (%)95.5000000
2/1/200998.30185.8800000percent (%)98.3000000
3/1/2009160.801109.8800000percent (%)160.8000000
4/1/2009106.801107.9200000percent (%)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
2/1/2010114.40191.7800000percent (%)114.4000000
3/1/201081.90197.6400000percent (%)81.9000000
4/1/201076.90195.7200000percent (%)76.9000000
7/1/2010113.20196.6000000percent (%)113.2000000
9/1/201099.35296.4800000percent (%)99.3500000
10/1/201084.70199.0800000percent (%)84.7000000
11/1/2010140.701109.4900000percent (%)140.7000000
12/1/2010104.801108.5500000percent (%)104.8000000
1/1/201193.601104.6300000percent (%)93.6000000
2/1/201185.201101.3900000percent (%)85.2000000
3/1/201172.70196.9500000percent (%)72.7000000
4/1/201197.00199.0000000percent (%)97.0000000
5/1/201196.30191.6000000percent (%)96.3000000
Target
percent (%)
Threshold
38.00 percent (%)

Rainfall

Units: inches Year
2011
Historical
period of record
High 37.49 51.31
Mean 14.1458872406144
Low 7.22
No. of Samples 363 4,739

Five-year Trend Graph

      
1/1/20071.83311.8300000inches1.8300000
2/1/20073.51283.5100000inches3.5100000
3/1/20070.60310.6000000inches0.6000000
4/1/20073.22293.2200000inches3.2200000
5/1/20070.52310.5200000inches0.5200000
6/1/20073.12303.1200000inches3.1200000
7/1/20076.18316.1800000inches6.1800000
8/1/20075.05315.0500000inches5.0500000
9/1/20072.38302.3800000inches2.3800000
10/1/20070.36210.3600000inches0.3600000
11/1/20070.40300.4000000inches0.4000000
12/1/20070.64310.6400000inches0.6400000
1/1/20081.65311.6500000inches1.6500000
2/1/20081.23291.2300000inches1.2300000
3/1/20082.84312.8400000inches2.8400000
4/1/20083.56303.5600000inches3.5600000
5/1/20082.22312.2200000inches2.2200000
6/1/20084.15304.1500000inches4.1500000
7/1/20086.82316.8200000inches6.8200000
8/1/20085.12315.1200000inches5.1200000
9/1/20086.59306.5900000inches6.5900000
10/1/20084.29314.2900000inches4.2900000
11/1/20080.38300.3800000inches0.3800000
12/1/20081.38311.3800000inches1.3800000
1/1/20090.78310.7800000inches0.7800000
2/1/20090.54280.5400000inches0.5400000
3/1/20090.82310.8200000inches0.8200000
4/1/20091.70301.7000000inches1.7000000
5/1/20094.35314.3500000inches4.3500000
6/1/20094.71304.7100000inches4.7100000
7/1/20093.64313.6400000inches3.6400000
8/1/20093.27313.2700000inches3.2700000
9/1/20096.63306.6300000inches6.6300000
10/1/20091.07311.0700000inches1.0700000
11/1/20095.48305.4800000inches5.4800000
12/1/20094.78314.7800000inches4.7800000
1/1/20103.32313.3200000inches3.3200000
2/1/20102.12282.1200000inches2.1200000
3/1/20107.03317.0300000inches7.0300000
4/1/20105.31305.3100000inches5.3100000
5/1/20100.74310.7400000inches0.7400000
6/1/20103.84303.8400000inches3.8400000
7/1/20105.32315.3200000inches5.3200000
8/1/20108.32318.3200000inches8.3200000
9/1/20103.46303.4600000inches3.4600000
10/1/20100.00310.0000000inches0.0000000
11/1/20100.48300.4800000inches0.4800000
12/1/20100.84310.8400000inches0.8400000
1/1/20112.37312.3700000inches2.3700000
2/1/20110.39280.3900000inches0.3900000
3/1/20119.44319.4400000inches9.4400000
4/1/20111.24301.2400000inches1.2400000
5/1/20112.78312.7800000inches2.7800000
6/1/20111.52301.5200000inches1.5200000
7/1/20115.35315.3500000inches5.3500000
8/1/20116.03316.0300000inches6.0300000
9/1/20114.97304.9700000inches4.9700000
10/1/20111.20301.2000000inches1.2000000
11/1/20112.07302.0700000inches2.0700000
12/1/20110.13300.1300000inches0.1300000
Target
inches
Threshold
inches

Salinity

Units: PSS Year
2011
Historical
period of record
High 0.66 56.00
Mean 0.62 0.52 6.2448
Low 0.60 0.22
No. of Samples 5 79

Five-year Trend Graph

      
1/1/20070.5910.5900000PSS0.5900000
2/1/20070.4910.5400000PSS0.4900000
3/1/20070.6310.5700000PSS0.6300000
4/1/200756.00114.4300000PSS56.0000000
5/1/20070.60111.6600000PSS0.6000000
6/1/20070.6919.8300000PSS0.6900000
7/1/20070.5419.8300000PSS0.5400000
8/1/20070.6119.8500000PSS0.6100000
9/1/20070.4719.8200000PSS0.4700000
10/1/20070.8710.6300000PSS0.8700000
11/1/20070.3510.5900000PSS0.3500000
12/1/20070.6310.5800000PSS0.6300000
1/1/20080.6510.6000000PSS0.6500000
2/1/20080.6310.6000000PSS0.6300000
3/1/20080.6510.6300000PSS0.6500000
4/1/20080.6910.6000000PSS0.6900000
5/1/20080.5910.6400000PSS0.5900000
6/1/20080.8310.6700000PSS0.8300000
7/1/20080.5510.6600000PSS0.5500000
8/1/20080.4910.6300000PSS0.4900000
9/1/20080.3810.5900000PSS0.3800000
10/1/20080.4510.5500000PSS0.4500000
11/1/20080.5710.5500000PSS0.5700000
12/1/20080.5010.4900000PSS0.5000000
2/1/20090.6210.5000000PSS0.6200000
3/1/20090.5810.5400000PSS0.5800000
4/1/20090.7310.6000000PSS0.7300000
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
2/1/20100.5110.5100000PSS0.5100000
3/1/20100.2810.4700000PSS0.2800000
4/1/20100.3910.4200000PSS0.3900000
7/1/20100.5110.4200000PSS0.5100000
9/1/20100.4620.4500000PSS0.4500000
10/1/20100.2210.4000000PSS0.2200000
11/1/20100.7110.4800000PSS0.7100000
12/1/20100.6410.5100000PSS0.6400000
1/1/20110.6410.5300000PSS0.6400000
2/1/20110.6610.5600000PSS0.6600000
3/1/20110.6110.5800000PSS0.6100000
4/1/20110.6110.6500000PSS0.6100000
5/1/20110.6010.6300000PSS0.6000000

Turbidity

Units: NTU Year
2011
Historical
period of record
High 8.50 9.40
Mean 4.52 4.39 1.80259
Low 2.10 1.20
No. of Samples 12 80

Five-year Trend Graph

      
1/1/20075.2015.2000000NTU5.2000000
2/1/20072.5013.8500000NTU2.5000000
3/1/20072.3013.3300000NTU2.3000000
4/1/20072.0013.0000000NTU2.0000000
5/1/20074.0013.2000000NTU4.0000000
6/1/20073.7013.2800000NTU3.7000000
7/1/20073.1012.9300000NTU3.1000000
8/1/20074.6013.2800000NTU4.6000000
9/1/20075.2013.7700000NTU5.2000000
10/1/20074.5014.1800000NTU4.5000000
11/1/20075.4014.4200000NTU5.4000000
12/1/20073.7014.4200000NTU3.7000000
1/1/20082.5014.3200000NTU2.5000000
2/1/20087.1014.7300000NTU7.1000000
3/1/20086.2014.9000000NTU6.2000000
4/1/20084.1014.8300000NTU4.1000000
5/1/20087.9015.2500000NTU7.9000000
6/1/20086.3015.6800000NTU6.3000000
7/1/20084.0015.9300000NTU4.0000000
8/1/20086.0015.7500000NTU6.0000000
9/1/20084.5015.4700000NTU4.5000000
10/1/20084.3015.5000000NTU4.3000000
11/1/20084.0014.8500000NTU4.0000000
12/1/20084.8014.6000000NTU4.8000000
2/1/20092.4014.0000000NTU2.4000000
3/1/20099.2014.9400000NTU9.2000000
4/1/20092.2014.5200000NTU2.2000000
5/1/20093.6014.4400000NTU3.6000000
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
1/1/20106.7015.9800000NTU6.7000000
2/1/20105.8016.1700000NTU5.8000000
3/1/20105.9016.0200000NTU5.9000000
4/1/20103.5016.0000000NTU3.5000000
6/1/20105.9015.5600000NTU5.9000000
7/1/20104.9015.2000000NTU4.9000000
8/1/20108.2015.6800000NTU8.2000000
9/1/20106.6525.8300000NTU6.6000000
10/1/20103.7015.8700000NTU3.7000000
11/1/20105.1015.7400000NTU5.1000000
12/1/20104.2015.4600000NTU4.2000000
1/1/20114.4015.3800000NTU4.4000000
2/1/20113.0014.5100000NTU3.0000000
3/1/20116.1014.4200000NTU6.1000000
4/1/20115.9014.7800000NTU5.9000000
5/1/20117.8015.2300000NTU7.8000000
6/1/20113.0015.0300000NTU3.0000000
7/1/20114.5015.0500000NTU4.5000000
8/1/20113.5015.1300000NTU3.5000000
9/1/20114.2014.8200000NTU4.2000000
10/1/20118.5015.2500000NTU8.5000000
11/1/20115.6014.8800000NTU5.6000000
12/1/20112.1014.7300000NTU2.1000000
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
2011
Historical
period of record
High 0.0 0.1
Mean 0.0071 0.0051 0.0240591
Low 0.0023 0.0001
No. of Samples 12 91

Five-year Trend Graph

     
1/1/20070.2510.0002500mg/l0.0002500
2/1/20071.3510.0008000mg/l0.0013500
3/1/20071.8310.0011400mg/l0.0018300
4/1/20070.9910.0011100mg/l0.0009900
5/1/20077.4710.0023800mg/l0.0074700
6/1/20077.0110.0031500mg/l0.0070100
7/1/200752.2010.0118100mg/l0.0522000
8/1/20074.1610.0122800mg/l0.0041600
9/1/20074.7210.0127600mg/l0.0047200
10/1/200721.0010.0160900mg/l0.0210000
11/1/20075.2010.0157200mg/l0.0052000
12/1/20071.2510.0147600mg/l0.0012500
1/1/20081.0330.0062300mg/l0.0010300
2/1/20081.6830.0058100mg/l0.0016100
3/1/20084.5230.0057800mg/l0.0044800
4/1/20085.1610.0031400mg/l0.0051600
5/1/20083.8410.0029100mg/l0.0038400
6/1/200811.0230.0045400mg/l0.0057400
7/1/20088.3730.0057700mg/l0.0076500
8/1/20088.8210.0069600mg/l0.0088200
9/1/200810.6010.0079700mg/l0.0106000
10/1/200813.4010.0093400mg/l0.0134000
11/1/20083.2930.0092500mg/l0.0029600
12/1/200819.4010.0106500mg/l0.0194000
1/1/20091.6910.0095300mg/l0.0016900
2/1/20091.0310.0082400mg/l0.0010300
3/1/200949.0010.0146400mg/l0.0490000
4/1/20091.6210.0126700mg/l0.0016200
5/1/20091.7210.0124100mg/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
1/1/20102.3110.0081600mg/l0.0023100
2/1/20102.1710.0081900mg/l0.0021700
3/1/201014.2010.0092900mg/l0.0142000
4/1/20108.4710.0102800mg/l0.0084700
6/1/2010142.0010.0338300mg/l0.1420000
7/1/201014.4010.0362500mg/l0.0144000
9/1/201025.9920.0477200mg/l0.0193900
10/1/20103.2710.0464200mg/l0.0032700
11/1/20107.3510.0386000mg/l0.0073500
12/1/20105.1910.0112400mg/l0.0051900
1/1/20117.4610.0098500mg/l0.0074600
2/1/20113.0410.0087200mg/l0.0030400
3/1/20114.3910.0051200mg/l0.0043900
4/1/20118.8610.0060500mg/l0.0088600
5/1/20117.5810.0060900mg/l0.0075800
6/1/201121.0010.0087200mg/l0.0210000
7/1/20115.5810.0084100mg/l0.0055800
8/1/20116.3910.0089700mg/l0.0063900
9/1/201110.2010.0099400mg/l0.0102000
10/1/20119.1210.0099800mg/l0.0091200
11/1/201114.8010.0111800mg/l0.0148000
12/1/20112.3110.0080700mg/l0.0023100
Target
mg/l
Threshold
0.011 mg/l
Pass

Nitrogen, Total

Trend analysis shows a weak decreasing trend.
Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 1.7 5.1
Mean 1.1119 1.1554 0.66078956
Low 0.889 0.131
No. of Samples 12 123

Five-year Trend Graph

     
1/1/2007870.0010.8700000mg/l0.8700000
2/1/2007735.0010.8025000mg/l0.7350000
3/1/2007852.0010.8190000mg/l0.8520000
4/1/2007847.0010.8260000mg/l0.8470000
5/1/2007941.0010.8490000mg/l0.9410000
6/1/2007766.0010.8351700mg/l0.7660000
7/1/20071080.0010.8701700mg/l1.0800000
8/1/20071080.0010.9276700mg/l1.0800000
9/1/20071010.0010.9540000mg/l1.0100000
10/1/20071130.0011.0011700mg/l1.1300000
11/1/2007587.0010.9421700mg/l0.5870000
12/1/2007520.0010.9011700mg/l0.5200000
1/1/2008802.3330.8548900mg/l0.7649500
2/1/20081235.0030.8807200mg/l1.2030200
3/1/20081012.0030.8810600mg/l0.9421000
4/1/2008919.5010.8459700mg/l0.9195000
5/1/2008736.0010.8708100mg/l0.7360000
6/1/20081046.3330.9585300mg/l1.0146300
7/1/20081082.6731.0052500mg/l1.0666500
8/1/2008976.0010.9620800mg/l0.9760000
9/1/20081234.0010.9990800mg/l1.2340000
10/1/2008642.0010.9528300mg/l0.6420000
11/1/20081280.0031.0435000mg/l1.2278700
12/1/20081098.0011.0521100mg/l1.0980000
1/1/2009884.0011.0190000mg/l0.8840000
2/1/2009546.0010.9473300mg/l0.5460000
3/1/20091645.0011.0158300mg/l1.6450000
4/1/20091275.0011.1213300mg/l1.2750000
5/1/2009799.0011.0411700mg/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
Pass

Phosphorus, Total

Trend analysis shows a weak decreasing trend.
Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 0.3 4.6
Mean 0.1479 0.2232 0.48266061
Low 0.11 0.055
No. of Samples 8 107

Five-year Trend Graph

     
1/1/200759.0010.0590000mg/l0.0590000
2/1/200761.0010.0600000mg/l0.0610000
3/1/200799.0010.0730000mg/l0.0990000
4/1/200777.0010.0740000mg/l0.0770000
5/1/2007221.0010.1034000mg/l0.2210000
6/1/2007262.0010.1298300mg/l0.2620000
7/1/2007207.0010.1545000mg/l0.2070000
8/1/2007203.0010.1781700mg/l0.2030000
9/1/2007186.0010.1926700mg/l0.1860000
10/1/2007193.0010.2120000mg/l0.1930000
11/1/200789.0010.1900000mg/l0.0890000
12/1/200779.0010.1595000mg/l0.0790000
1/1/200865.6730.1359500mg/l0.0643500
2/1/2008145.3330.1263300mg/l0.1419800
3/1/2008108.3330.1133900mg/l0.1078400
4/1/200884.0010.0952200mg/l0.0840000
5/1/2008110.0010.0987200mg/l0.1100000
6/1/2008263.6730.1295000mg/l0.2202600
7/1/2008146.0030.1428900mg/l0.1382100
8/1/2008112.0010.1373300mg/l0.1120000
9/1/2008223.0010.1564500mg/l0.2230000
10/1/200858.0010.1521100mg/l0.0580000
11/1/2008120.3330.1538300mg/l0.1131400
12/1/2008100.0010.1265600mg/l0.1000000
1/1/200974.0010.1145600mg/l0.0740000
2/1/200973.0010.1080600mg/l0.0730000
3/1/2009661.0010.1810600mg/l0.6610000
4/1/2009208.0010.2060600mg/l0.2080000
5/1/200998.0010.2023300mg/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
1/1/201060.0010.0945000mg/l0.0600000
2/1/201079.0010.0871700mg/l0.0790000
3/1/2010130.0010.0900000mg/l0.1300000
4/1/201098.0010.0910000mg/l0.0980000
6/1/20104610.0010.9954000mg/l4.6100000
7/1/2010470.0011.0774000mg/l0.4700000
9/1/2010233.5021.3528800mg/l0.2312300
10/1/2010186.0011.3748800mg/l0.1860000
11/1/2010152.0011.1303000mg/l0.1520000
12/1/2010181.0010.2445000mg/l0.1810000
1/1/201191.0010.1687000mg/l0.0910000
2/1/201199.0010.1570800mg/l0.0990000
3/1/201188.0010.1328300mg/l0.0880000
4/1/2011110.0010.1201700mg/l0.1100000
5/1/2011120.0010.1148300mg/l0.1200000
6/1/2011129.0010.1061700mg/l0.1290000
7/1/2011125.0010.1118300mg/l0.1250000
8/1/2011163.0010.1225000mg/l0.1630000
9/1/2011150.0010.1328300mg/l0.1500000
10/1/2011153.0010.1400000mg/l0.1530000
11/1/2011288.0010.1680000mg/l0.2880000
12/1/201177.0010.1593300mg/l0.0770000
Target
mg/l
Threshold
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
2011
Historical
period of record
High 108.8 920.0
Mean 97.08 46.71 66.70394
Low 78.60 0.00
No. of Samples 5 208

Five-year Trend Graph

     
1/1/200776.20176.2000000percent (%)76.2000000
2/1/2007130.201103.2000000percent (%)130.2000000
3/1/200785.70197.3700000percent (%)85.7000000
4/1/200793.00196.2800000percent (%)93.0000000
5/1/200790.20195.0600000percent (%)90.2000000
6/1/200711.20181.0800000percent (%)11.2000000
7/1/200783.40182.2800000percent (%)83.4000000
8/1/200757.30170.1300000percent (%)57.3000000
9/1/200730.70160.9700000percent (%)30.7000000
10/1/200786.90159.9500000percent (%)86.9000000
11/1/200793.40160.4800000percent (%)93.4000000
12/1/200781.90172.2700000percent (%)81.9000000
1/1/200877.70371.3200000percent (%)75.2900000
2/1/200839.97368.4300000percent (%)39.7800000
3/1/2008123.03383.8200000percent (%)113.9500000
4/1/2008130.70191.1200000percent (%)130.7000000
5/1/200895.80191.5200000percent (%)95.8000000
6/1/200853.77386.8300000percent (%)25.9400000
7/1/200854.13382.9000000percent (%)51.5200000
8/1/200844.00183.5700000percent (%)44.0000000
9/1/200855.60172.3300000percent (%)55.6000000
10/1/200895.50166.4700000percent (%)95.5000000
11/1/200875.87363.1500000percent (%)74.0600000
12/1/200882.70167.9700000percent (%)82.7000000
1/1/200977.40171.8500000percent (%)77.4000000
2/1/200990.60179.6100000percent (%)90.6000000
3/1/2009101.10187.2000000percent (%)101.1000000
4/1/200988.80186.0800000percent (%)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
1/1/2010103.20168.4300000percent (%)103.2000000
2/1/2010108.00176.3400000percent (%)108.0000000
3/1/201097.00184.3400000percent (%)97.0000000
4/1/201084.60194.0800000percent (%)84.6000000
9/1/201062.00173.3000000percent (%)62.0000000
11/1/201070.90166.4500000percent (%)70.9000000
1/1/201198.00176.9700000percent (%)98.0000000
2/1/201199.90182.7000000percent (%)99.9000000
3/1/2011103.00192.9500000percent (%)103.0000000
4/1/2011108.80196.1200000percent (%)108.8000000
5/1/201178.60197.6600000percent (%)78.6000000
Target
percent (%)
Threshold
56.00 percent (%)

Oysters

Units: Year
2011
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend 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

Rainfall

Units: inches Year
2011
Historical
period of record
High 37.5 51.3
Mean 14.1458872406144
Low 7.22
No. of Samples 363 4,739

Five-year Trend Graph

     
1/1/20071.83311.8300000inches1.8300000
2/1/20073.51283.5100000inches3.5100000
3/1/20070.60310.6000000inches0.6000000
4/1/20073.22293.2200000inches3.2200000
5/1/20070.52310.5200000inches0.5200000
6/1/20073.12303.1200000inches3.1200000
7/1/20076.18316.1800000inches6.1800000
8/1/20075.05315.0500000inches5.0500000
9/1/20072.38302.3800000inches2.3800000
10/1/20070.36210.3600000inches0.3600000
11/1/20070.40300.4000000inches0.4000000
12/1/20070.64310.6400000inches0.6400000
1/1/20081.65311.6500000inches1.6500000
2/1/20081.23291.2300000inches1.2300000
3/1/20082.84312.8400000inches2.8400000
4/1/20083.56303.5600000inches3.5600000
5/1/20082.22312.2200000inches2.2200000
6/1/20084.15304.1500000inches4.1500000
7/1/20086.82316.8200000inches6.8200000
8/1/20085.12315.1200000inches5.1200000
9/1/20086.59306.5900000inches6.5900000
10/1/20084.29314.2900000inches4.2900000
11/1/20080.38300.3800000inches0.3800000
12/1/20081.38311.3800000inches1.3800000
1/1/20090.78310.7800000inches0.7800000
2/1/20090.54280.5400000inches0.5400000
3/1/20090.82310.8200000inches0.8200000
4/1/20091.70301.7000000inches1.7000000
5/1/20094.35314.3500000inches4.3500000
6/1/20094.71304.7100000inches4.7100000
7/1/20093.64313.6400000inches3.6400000
8/1/20093.27313.2700000inches3.2700000
9/1/20096.63306.6300000inches6.6300000
10/1/20091.07311.0700000inches1.0700000
11/1/20095.48305.4800000inches5.4800000
12/1/20094.78314.7800000inches4.7800000
1/1/20103.32313.3200000inches3.3200000
2/1/20102.12282.1200000inches2.1200000
3/1/20107.03317.0300000inches7.0300000
4/1/20105.31305.3100000inches5.3100000
5/1/20100.74310.7400000inches0.7400000
6/1/20103.84303.8400000inches3.8400000
7/1/20105.32315.3200000inches5.3200000
8/1/20108.32318.3200000inches8.3200000
9/1/20103.46303.4600000inches3.4600000
10/1/20100.00310.0000000inches0.0000000
11/1/20100.48300.4800000inches0.4800000
12/1/20100.84310.8400000inches0.8400000
1/1/20112.37312.3700000inches2.3700000
2/1/20110.39280.3900000inches0.3900000
3/1/20119.44319.4400000inches9.4400000
4/1/20111.24301.2400000inches1.2400000
5/1/20112.78312.7800000inches2.7800000
6/1/20111.52301.5200000inches1.5200000
7/1/20115.35315.3500000inches5.3500000
8/1/20116.03316.0300000inches6.0300000
9/1/20114.97304.9700000inches4.9700000
10/1/20111.20301.2000000inches1.2000000
11/1/20112.07302.0700000inches2.0700000
12/1/20110.13300.1300000inches0.1300000
Target
inches
Threshold
inches

Salinity

Units: PSS Year
2011
Historical
period of record
High 0.7 29.5
Mean 0.62 1.89 6.673
Low 0.60 0.00
No. of Samples 5 154

Five-year Trend Graph

     
1/1/20070.5810.5800000PSS0.5800000
2/1/20070.4910.5400000PSS0.4900000
3/1/20070.6110.5600000PSS0.6100000
4/1/20070.5510.5600000PSS0.5500000
5/1/200713.5413.1500000PSS13.5400000
6/1/200725.3716.8600000PSS25.3700000
7/1/20070.5316.8500000PSS0.5300000
8/1/20070.6016.8700000PSS0.6000000
9/1/20070.4616.8400000PSS0.4600000
10/1/20070.3816.8100000PSS0.3800000
11/1/20070.6214.6600000PSS0.6200000
12/1/20070.6310.5400000PSS0.6300000
1/1/20080.6730.5600000PSS0.6700000
2/1/20080.7530.5900000PSS0.7400000
3/1/20080.8330.6500000PSS0.8000000
4/1/20080.7010.7000000PSS0.7000000
5/1/20080.5910.7000000PSS0.5900000
6/1/200810.1432.2800000PSS4.8500000
7/1/200810.2133.8700000PSS2.1100000
8/1/20080.4913.8300000PSS0.4900000
9/1/20080.3813.7500000PSS0.3800000
10/1/20080.4513.7100000PSS0.4500000
11/1/20087.6134.8800000PSS3.9900000
12/1/20080.5013.2700000PSS0.5000000
1/1/20090.6211.6800000PSS0.6200000
2/1/20090.5911.6900000PSS0.5900000
3/1/200914.7514.0900000PSS14.7500000
4/1/20090.6214.1200000PSS0.6200000
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
1/1/20100.4713.9500000PSS0.4700000
2/1/20100.5113.2600000PSS0.5100000
3/1/20100.4013.2500000PSS0.4000000
4/1/20100.4110.4500000PSS0.4100000
9/1/20100.4710.4400000PSS0.4700000
11/1/201016.1918.3300000PSS16.1900000
1/1/20110.6515.7700000PSS0.6500000
2/1/20110.6414.4900000PSS0.6400000
3/1/20110.6014.5200000PSS0.6000000
4/1/20110.6113.7400000PSS0.6100000
5/1/20110.6010.6200000PSS0.6000000

Turbidity

Units: NTU Year
2011
Historical
period of record
High 34.0 42.0
Mean 4.34 3.6 4.30329
Low 1.74 0.88
No. of Samples 12 204

Five-year Trend Graph

     
1/1/20071.8111.8100000NTU1.8100000
2/1/20071.4011.6100000NTU1.4000000
3/1/20072.2011.8000000NTU2.2000000
4/1/20071.1011.6300000NTU1.1000000
5/1/20071.8011.6600000NTU1.8000000
6/1/20072.6011.8200000NTU2.6000000
7/1/20072.3011.9000000NTU2.3000000
8/1/20071.5211.9200000NTU1.5200000
9/1/20072.0011.8900000NTU2.0000000
10/1/20073.1012.2200000NTU3.1000000
11/1/20071.3312.1400000NTU1.3300000
12/1/20071.1211.9000000NTU1.1200000
1/1/20081.1931.7100000NTU1.1300000
2/1/20082.0331.8000000NTU1.8600000
3/1/20082.2731.8400000NTU2.2500000
4/1/20081.9411.6500000NTU1.9400000
5/1/20081.5411.6800000NTU1.5400000
6/1/20084.9932.3300000NTU3.6700000
7/1/20083.1332.6500000NTU2.8900000
8/1/20082.0012.6500000NTU2.0000000
9/1/20084.6013.0300000NTU4.6000000
10/1/20082.0013.0400000NTU2.0000000
11/1/20083.0833.3000000NTU2.9000000
12/1/20083.5013.0500000NTU3.5000000
1/1/20091.4812.7800000NTU1.4800000
2/1/20091.0912.6300000NTU1.0900000
3/1/200913.8014.1600000NTU13.8000000
4/1/20092.3014.2100000NTU2.3000000
5/1/20091.8314.0000000NTU1.8300000
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
1/1/20103.8013.2100000NTU3.8000000
2/1/20103.6013.6000000NTU3.6000000
3/1/20104.4013.6000000NTU4.4000000
4/1/20102.6013.7500000NTU2.6000000
6/1/201042.00111.2800000NTU42.0000000
7/1/201012.60113.0400000NTU12.6000000
9/1/20106.75215.9900000NTU6.5200000
10/1/20104.20116.3900000NTU4.2000000
11/1/20103.60113.8300000NTU3.6000000
12/1/20103.1016.0500000NTU3.1000000
1/1/20114.2014.3700000NTU4.2000000
2/1/20112.5014.0600000NTU2.5000000
3/1/20112.8013.4000000NTU2.8000000
4/1/20114.4013.4300000NTU4.4000000
5/1/20113.7013.4500000NTU3.7000000
6/1/20112.6013.3700000NTU2.6000000
7/1/20112.7013.1200000NTU2.7000000
8/1/20113.8013.3300000NTU3.8000000
9/1/20117.2014.0700000NTU7.2000000
10/1/20118.2014.7000000NTU8.2000000
11/1/201134.0019.7500000NTU34.0000000
12/1/20111.7419.6100000NTU1.7400000
Other Measures of Creek Health

Oysters

Because they are immobile and will tolerate a fairly wide salinity range, eastern oysters (Crassotrea 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 »

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Most Recent Sarasota County Oyster Monitoring Program Data
Icon Site ID Year Dead Live Total % Live
1 CAT1 2011 0 0 0 0
2 NC1 2011 89 514 603 85
3 NC2 2011 0 0 0 0

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.

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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 »

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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.