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South Creek Condition Report for 2016

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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: 12,630 acres
  • Location: Central Sarasota County
  • Discharges into: Blackburn Bay

Although the surface water system in the South Creek Basin has undergone physical changes over the past century, it has been altered less than all of the nearby basins draining to Blackburn Bay or Little Sarasota Bay. The Sarasota County historical and mid-century surveys and aerial photographs show South Creek extending about 2½ miles into the watershed, with a shorter branch joining the south side of the creek. Although the basin was almost entirely undeveloped by the 1970s, the creek had been extended through many wetlands. Today, about 20% of the basin is developed but is isolated in the northwest and southwest portion of the basin. 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:
  • 1982
  • 1982B
  • 1985
Pass

Chlorophyll a

Score: Pass
Units: mg/l Year
2016
Historical
period of record
High 0.0147 0.0416
Mean 0.0038 0.0044 0.00705118
Low 0.0003 0.0003
No. of Samples 14 283

Five-year Trend Graph

      
1/1/20123.8130.0038100mg/l0.0038100
2/1/20122.0930.0029500mg/l0.0020900
3/1/20125.8530.0039200mg/l0.0058500
4/1/201210.7030.0056100mg/l0.0107000
5/1/201215.6030.0076100mg/l0.0156000
6/1/20126.7730.0074700mg/l0.0067700
7/1/20127.0730.0080100mg/l0.0070700
8/1/201210.6030.0094300mg/l0.0106000
9/1/201212.6030.0105600mg/l0.0126000
10/1/20128.2830.0101500mg/l0.0082800
11/1/20121.8030.0078500mg/l0.0018000
12/1/201210.1030.0084100mg/l0.0101000
1/1/20132.5930.0076600mg/l0.0025900
2/1/20131.5630.0061600mg/l0.0015600
3/1/20133.2530.0046000mg/l0.0032500
4/1/20131.7930.0035200mg/l0.0017900
5/1/20134.2430.0039200mg/l0.0042400
6/1/201311.5030.0041600mg/l0.0115000
7/1/201319.0030.0068900mg/l0.0190000
8/1/20139.6130.0082300mg/l0.0096100
9/1/201311.7030.0096400mg/l0.0117000
10/1/201310.4030.0110800mg/l0.0104000
11/1/20136.9820.0115300mg/l0.0069800
12/1/20132.3830.0100100mg/l0.0023800
1/1/20140.9640.0070100mg/l0.0009600
2/1/20145.5040.0063200mg/l0.0055000
3/1/201411.5040.0062900mg/l0.0115000
4/1/20142.7040.0050000mg/l0.0027000
5/1/20143.7640.0044700mg/l0.0037600
6/1/20145.8540.0050500mg/l0.0058500
7/1/20142.4140.0052900mg/l0.0024100
8/1/20149.1540.0059000mg/l0.0091500
9/1/20141.8340.0042800mg/l0.0018300
10/1/20147.7340.0051200mg/l0.0077300
11/1/201410.9040.0063100mg/l0.0109000
12/1/20143.1840.0058700mg/l0.0031800
1/1/201514.3030.0078500mg/l0.0143000
2/1/20154.4630.0070700mg/l0.0044600
3/1/20152.2230.0071300mg/l0.0022200
4/1/20151.6320.0061200mg/l0.0016300
5/1/20153.2420.0048400mg/l0.0032400
6/1/20150.9630.0044700mg/l0.0009600
7/1/20158.1020.0034400mg/l0.0081000
8/1/20159.4020.0042600mg/l0.0094000
9/1/201510.7020.0056700mg/l0.0107000
10/1/20151.7210.0056900mg/l0.0017200
11/1/201524.5010.0092300mg/l0.0245000
1/1/20163.3320.0099300mg/l0.0033300
2/1/201614.7010.0109900mg/l0.0147000
3/1/201611.1010.0110700mg/l0.0111000
4/1/20162.2610.0111800mg/l0.0022600
5/1/20166.8610.0076500mg/l0.0068600
6/1/20162.5610.0068000mg/l0.0025600
7/1/20169.8810.0078900mg/l0.0098800
8/1/20162.5210.0058600mg/l0.0025200
9/1/20163.3920.0045800mg/l0.0014200
10/1/201610.9010.0060200mg/l0.0109000
11/1/20161.1710.0050700mg/l0.0011700
12/1/20162.4910.0050600mg/l0.0024900
Target
mg/l
Threshold
0.02 mg/l
Pass

Nitrogen, Total

Score: Pass
Units: mg/l Year
2016
Historical
period of record
High 2.17 3.60
Mean 1.5237 1.2344 0.54668812
Low 1.081 0.25
No. of Samples 7 175

Five-year Trend Graph

      
1/1/2012964.0010.9640000mg/l0.9640000
2/1/20121093.0011.0285000mg/l1.0930000
3/1/20121172.0011.0763300mg/l1.1720000
4/1/20121387.0011.1540000mg/l1.3870000
5/1/20122077.0011.3386000mg/l2.0770000
6/1/20121337.0011.3383300mg/l1.3370000
7/1/20122151.0011.5361700mg/l2.1510000
8/1/20121820.0011.6573300mg/l1.8200000
9/1/20121540.0011.7186700mg/l1.5400000
10/1/20121615.0011.7566700mg/l1.6150000
11/1/20121108.0011.5951700mg/l1.1080000
12/1/20121528.0011.6270000mg/l1.5280000
1/1/2013888.0011.4165000mg/l0.8880000
2/1/2013716.0011.2325000mg/l0.7160000
3/1/2013937.0011.1320000mg/l0.9370000
4/1/2013596.0010.9621700mg/l0.5960000
5/1/20131173.0010.9730000mg/l1.1730000
6/1/2013963.0010.8788300mg/l0.9630000
7/1/20132185.0011.0950000mg/l2.1850000
8/1/20131532.0011.2310000mg/l1.5320000
9/1/20132016.0011.4108300mg/l2.0160000
10/1/20131426.0011.5491700mg/l1.4260000
12/1/20131391.0011.7100000mg/l1.3910000
1/1/20141120.0021.4970000mg/l1.1200000
2/1/20141156.0021.4218000mg/l1.1560000
3/1/2014931.0021.2048000mg/l0.9310000
4/1/2014986.0021.1168000mg/l0.9860000
5/1/2014980.0021.0940000mg/l0.9800000
6/1/20141359.0011.0886700mg/l1.3590000
7/1/20141201.0011.1021700mg/l1.2010000
8/1/20141472.0011.1548300mg/l1.4720000
9/1/20142041.0011.3398300mg/l2.0410000
10/1/20142872.0021.6541700mg/l2.8720000
11/1/20141550.0021.7491700mg/l1.5500000
12/1/20141935.0021.8451700mg/l1.9350000
1/1/20151525.0011.8991700mg/l1.5250000
2/1/20151822.0011.9575000mg/l1.8220000
3/1/20151375.0011.8465000mg/l1.3750000
6/1/20151759.0011.6202500mg/l1.7590000
1/1/20161442.0011.4420000mg/l1.4420000
2/1/20161417.0011.4295000mg/l1.4170000
3/1/20161426.0011.4283300mg/l1.4260000
4/1/20161081.0011.3415000mg/l1.0810000
9/1/20162170.0011.6255000mg/l2.1700000
10/1/20161898.0012.0340000mg/l1.8980000
11/1/20161470.0011.8460000mg/l1.4700000
Pass

Phosphorus, Total

Score: Pass
Units: mg/l Year
2016
Historical
period of record
High 0.33 1.308
Mean 0.1727 0.1638 0.17169731
Low 0.091 0.035
No. of Samples 10 321

Five-year Trend Graph

      
1/1/201263.0030.0630000mg/l0.0630000
2/1/201278.0030.0705000mg/l0.0780000
3/1/201286.0030.0756700mg/l0.0860000
4/1/2012163.0030.0975000mg/l0.1630000
5/1/2012351.0030.1482000mg/l0.3510000
6/1/2012171.0030.1520000mg/l0.1710000
7/1/2012295.0030.1906700mg/l0.2950000
8/1/2012239.0030.2175000mg/l0.2390000
9/1/2012115.0030.2223300mg/l0.1150000
10/1/2012145.0030.2193300mg/l0.1450000
11/1/201259.0030.1706700mg/l0.0590000
12/1/201291.0030.1573300mg/l0.0910000
1/1/201370.0030.1198300mg/l0.0700000
2/1/201387.0030.0945000mg/l0.0870000
3/1/201353.0030.0841700mg/l0.0530000
4/1/2013114.0030.0790000mg/l0.1140000
5/1/201385.0030.0833300mg/l0.0850000
6/1/2013105.0030.0856700mg/l0.1050000
7/1/2013194.0030.1063300mg/l0.1940000
8/1/2013140.0030.1151700mg/l0.1400000
9/1/2013180.0030.1363300mg/l0.1800000
10/1/2013143.0030.1411700mg/l0.1430000
11/1/2013108.0020.1450000mg/l0.1080000
12/1/201393.0030.1430000mg/l0.0930000
1/1/201458.0040.1203300mg/l0.0580000
2/1/201471.0040.1088300mg/l0.0710000
3/1/201492.0040.0941700mg/l0.0920000
4/1/201465.0040.0811700mg/l0.0650000
5/1/201468.0040.0745000mg/l0.0680000
6/1/2014100.0040.0756700mg/l0.1000000
7/1/2014120.0040.0860000mg/l0.1200000
8/1/2014143.0040.0980000mg/l0.1430000
9/1/2014209.0040.1175000mg/l0.2090000
10/1/2014279.0040.1531700mg/l0.2790000
11/1/2014122.0040.1621700mg/l0.1220000
12/1/2014166.0040.1731700mg/l0.1660000
1/1/2015100.0030.1698300mg/l0.1000000
2/1/2015128.0030.1673300mg/l0.1280000
3/1/2015125.0030.1533300mg/l0.1250000
4/1/2015118.0020.1265000mg/l0.1180000
5/1/2015135.0020.1286700mg/l0.1350000
6/1/2015107.0030.1188300mg/l0.1070000
7/1/2015258.0020.1451700mg/l0.2580000
8/1/2015291.0020.1723300mg/l0.2910000
9/1/2015158.0020.1778300mg/l0.1580000
10/1/201594.0010.1738300mg/l0.0940000
11/1/2015138.0010.1743300mg/l0.1380000
1/1/201691.0010.1544000mg/l0.0910000
3/1/2016118.0010.1102500mg/l0.1180000
5/1/2016103.0010.1040000mg/l0.1030000
6/1/2016330.0010.1605000mg/l0.3300000
7/1/2016193.0010.1860000mg/l0.1930000
8/1/2016263.0010.2014000mg/l0.2630000
9/1/2016248.5020.2275000mg/l0.2407700
10/1/2016191.0010.2214200mg/l0.1910000
11/1/2016115.0010.2234200mg/l0.1150000
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
2016
Historical
period of record
High 77.70 7042.25
Mean 49.54 52.21 357.2514
Low 19.00 1.80
No. of Samples 13 384

Five-year Trend Graph

      
1/1/201265.30365.3000000percent (%)65.3000000
2/1/201263.20364.2500000percent (%)63.2000000
3/1/201246.70358.4000000percent (%)46.7000000
4/1/201246.20355.3500000percent (%)46.2000000
5/1/201215.40347.3600000percent (%)15.4000000
7/1/201211.60336.6200000percent (%)11.6000000
8/1/201225.40329.0600000percent (%)25.4000000
9/1/201271.50334.0200000percent (%)71.5000000
10/1/201264.00337.5800000percent (%)64.0000000
11/1/2012105.20355.5400000percent (%)105.2000000
12/1/201279.50359.5300000percent (%)79.5000000
1/1/201365.20368.4700000percent (%)65.2000000
2/1/201357.70373.8500000percent (%)57.7000000
3/1/201396.60378.0300000percent (%)96.6000000
4/1/201322.10371.0500000percent (%)22.1000000
5/1/201341.00360.3500000percent (%)41.0000000
6/1/201342.20354.1300000percent (%)42.2000000
7/1/201351.00351.7700000percent (%)51.0000000
8/1/201342.60349.2500000percent (%)42.6000000
9/1/201343.60340.4200000percent (%)43.6000000
10/1/201362.40347.1300000percent (%)62.4000000
12/1/201363.70352.6600000percent (%)63.7000000
1/1/201475.50157.5600000percent (%)75.5000000
2/1/201482.10165.4600000percent (%)82.1000000
3/1/201460.00468.7400000percent (%)60.0000000
4/1/201450.80466.4200000percent (%)50.8000000
5/1/201446.10463.0300000percent (%)46.1000000
6/1/201447.10460.2700000percent (%)47.1000000
7/1/201465.00458.5200000percent (%)65.0000000
8/1/201454.70453.9500000percent (%)54.7000000
9/1/201452.20452.6500000percent (%)52.2000000
10/1/201419.50447.4300000percent (%)19.5000000
11/1/201476.90452.5700000percent (%)76.9000000
12/1/201485.40458.9500000percent (%)85.4000000
1/1/201576.00360.7800000percent (%)76.0000000
2/1/201584.80365.8000000percent (%)84.8000000
3/1/201568.80368.5700000percent (%)68.8000000
6/1/201535.50366.2800000percent (%)35.5000000
7/1/201541.10157.5500000percent (%)41.1000000
8/1/201543.40147.2000000percent (%)43.4000000
9/1/201546.20141.5500000percent (%)46.2000000
10/1/201556.70144.5800000percent (%)56.7000000
11/1/201552.30145.8700000percent (%)52.3000000
1/1/201677.70255.2600000percent (%)77.7000000
2/1/201669.10160.4000000percent (%)69.1000000
3/1/201671.30165.4200000percent (%)71.3000000
4/1/201668.20167.7200000percent (%)68.2000000
5/1/201633.50163.9600000percent (%)33.5000000
6/1/201622.40157.0300000percent (%)22.4000000
7/1/201643.30151.3000000percent (%)43.3000000
8/1/201663.10150.3000000percent (%)63.1000000
9/1/201619.00141.5800000percent (%)19.0000000
10/1/201624.70134.3300000percent (%)24.7000000
11/1/201675.00141.2500000percent (%)75.0000000
12/1/201674.00149.8500000percent (%)74.0000000
Target
percent (%)
Threshold
38.00 percent (%)

BOD, Biochemical oxygen demand

Units: mg/l Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

      
1/1/20121.3011.3000000mg/l1.3000000
2/1/20121.0731.1900000mg/l1.0700000
3/1/20120.7131.0300000mg/l0.7100000
4/1/20120.7730.9600000mg/l0.7700000
5/1/20121.5331.0800000mg/l1.5300000
6/1/20122.0031.2300000mg/l2.0000000
7/1/20122.0731.3600000mg/l2.0700000
8/1/20121.6731.4600000mg/l1.6700000
9/1/20121.6931.6200000mg/l1.6900000
10/1/20121.0131.6600000mg/l1.0100000
11/1/20120.5031.4900000mg/l0.5000000
12/1/20120.8831.3000000mg/l0.8800000
1/1/20130.5931.0600000mg/l0.5900000
2/1/20130.6030.8800000mg/l0.6000000
3/1/20130.8230.7300000mg/l0.8200000
4/1/20130.6030.6700000mg/l0.6000000
5/1/20130.7830.7100000mg/l0.7800000
6/1/20131.3530.7900000mg/l1.3500000
7/1/20131.9731.0200000mg/l1.9700000
8/1/20131.3031.1400000mg/l1.3000000
9/1/20131.0631.1800000mg/l1.0600000
10/1/20131.0031.2400000mg/l1.0000000
11/1/20130.5021.2000000mg/l0.5000000
12/1/20130.6031.0700000mg/l0.6000000
1/1/20140.5040.8300000mg/l0.5000000
2/1/20140.6040.7100000mg/l0.6000000
3/1/20141.4140.7700000mg/l1.4100000
4/1/20140.6440.7100000mg/l0.6400000
5/1/20142.1640.9900000mg/l2.1600000
6/1/20140.5240.9700000mg/l0.5200000
7/1/20140.5140.9700000mg/l0.5100000
8/1/20140.9531.0300000mg/l0.9500000
9/1/20140.5040.8800000mg/l0.5000000
10/1/20143.4941.3600000mg/l3.4900000
11/1/20140.9241.1500000mg/l0.9200000
12/1/20140.8231.2000000mg/l0.8200000
1/1/20151.5831.3800000mg/l1.5800000
2/1/20150.8531.3600000mg/l0.8500000
3/1/20151.1031.4600000mg/l1.1000000
4/1/20150.5620.9700000mg/l0.5600000
5/1/20150.5920.9200000mg/l0.5900000
6/1/20150.7530.9100000mg/l0.7500000
7/1/20150.8320.7800000mg/l0.8300000
8/1/20151.0620.8200000mg/l1.0600000
9/1/20151.2120.8300000mg/l1.2100000
10/1/20150.7010.8600000mg/l0.7000000
11/1/20153.1211.2800000mg/l3.1200000
1/1/20160.7721.3700000mg/l0.7700000
2/1/20161.2611.4100000mg/l1.2600000
3/1/20161.4711.4600000mg/l1.4700000
4/1/20160.5911.4400000mg/l0.5900000
5/1/20160.6610.9500000mg/l0.6600000
6/1/20161.0010.9600000mg/l1.0000000
7/1/20161.2811.0400000mg/l1.2800000
8/1/20161.0011.0000000mg/l1.0000000
9/1/20162.0011.0900000mg/l2.0000000
10/1/20161.6411.2600000mg/l1.6400000
11/1/20161.0011.3200000mg/l1.0000000
12/1/20161.0011.3200000mg/l1.0000000

Color

Units: PCU Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

      
2/1/2016100.001100.0000000PCU100.0000000
3/1/201690.00195.0000000PCU90.0000000
4/1/2016100.00196.6700000PCU100.0000000
5/1/201680.00192.5000000PCU80.0000000
6/1/2016100.00194.0000000PCU100.0000000
7/1/201670.00190.0000000PCU70.0000000
8/1/2016400.001140.0000000PCU400.0000000
9/1/2016350.001183.3300000PCU350.0000000
10/1/2016180.001196.6700000PCU180.0000000
11/1/2016100.001200.0000000PCU100.0000000
12/1/2016100.001200.0000000PCU100.0000000

Escherichia coli

Units: cfu/100ml Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

      
4/1/20153255.0023255.0000000cfu/100ml3255.0000000
5/1/20158164.0025709.5000000cfu/100ml8164.0000000
6/1/2015512.0023977.0000000cfu/100ml512.0000000
7/1/2015309.0023060.0000000cfu/100ml309.0000000
8/1/2015203.0022488.6000000cfu/100ml203.0000000
9/1/201552.0022082.5000000cfu/100ml52.0000000
10/1/2015399.0011606.5000000cfu/100ml399.0000000
11/1/2015933.001401.3300000cfu/100ml933.0000000
1/1/201686.002334.6000000cfu/100ml86.0000000
2/1/2016305.001355.0000000cfu/100ml305.0000000
3/1/2016272.001399.0000000cfu/100ml272.0000000
4/1/2016211.001361.4000000cfu/100ml211.0000000
5/1/201675.001189.8000000cfu/100ml75.0000000
6/1/2016203.001192.0000000cfu/100ml203.0000000
7/1/2016364.001238.3300000cfu/100ml364.0000000
8/1/2016110.001205.8300000cfu/100ml110.0000000
9/1/201630.001165.5000000cfu/100ml30.0000000
10/1/2016605.001231.1700000cfu/100ml605.0000000
11/1/20161439.001458.5000000cfu/100ml1439.0000000
12/1/20161483.001671.8300000cfu/100ml1483.0000000
Target
cfu/100ml
Threshold
cfu/100ml

Nitrogen, Ammonia + Ammonium as N

Units: ug/l Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

      
1/1/2012143.003143.0000000ug/l143.0000000
2/1/2012123.003133.0000000ug/l123.0000000
3/1/2012134.003133.3300000ug/l134.0000000
4/1/2012274.003168.5000000ug/l273.9700000
5/1/2012557.003246.2000000ug/l557.0000000
6/1/201277.003218.0000000ug/l77.0000000
7/1/201296.003210.1700000ug/l96.0000000
8/1/201247.003197.5000000ug/l47.0000000
9/1/2012162.003202.1700000ug/l162.0000000
10/1/2012148.003181.1700000ug/l148.0000000
11/1/2012212.003123.6700000ug/l212.0000000
12/1/2012170.003139.1700000ug/l170.0000000
1/1/2013155.003149.0000000ug/l155.0000000
2/1/2013105.003158.6700000ug/l105.0000000
3/1/201388.003146.3300000ug/l88.0000000
4/1/201398.003138.0000000ug/l98.0000000
5/1/201376.003115.3300000ug/l76.0000000
6/1/20138.00388.3300000ug/l8.0000000
7/1/201379.00375.6700000ug/l79.0000000
8/1/201316.00360.8300000ug/l16.0000000
9/1/201316.00348.8300000ug/l16.0000000
10/1/201396.00348.5000000ug/l96.0000000
11/1/2013157.00262.0000000ug/l157.0000000
12/1/2013186.00391.6700000ug/l186.0000000
1/1/20146.40579.5700000ug/l2.0100000
2/1/2014136.83599.7100000ug/l42.9500000
3/1/201473.625109.3100000ug/l23.1100000
4/1/201442.764100.4400000ug/l10.1400000
5/1/201442.01481.2700000ug/l9.9600000
6/1/201477.62563.2100000ug/l24.3700000
7/1/201451.21570.6800000ug/l16.0800000
8/1/20146.40548.9400000ug/l2.0100000
9/1/20146.40537.7300000ug/l2.0100000
10/1/2014105.63548.2100000ug/l33.1600000
11/1/201439.21547.7500000ug/l12.3100000
12/1/201492.82550.2800000ug/l29.1400000
1/1/201514.00344.0800000ug/l14.0000000
2/1/201582.00356.6800000ug/l82.0000000
3/1/2015176.00384.9400000ug/l176.0000000
4/1/2015133.00289.5100000ug/l133.0000000
5/1/2015179.002112.8000000ug/l179.0000000
6/1/2015306.003148.3300000ug/l306.0000000
7/1/201536.002152.0000000ug/l36.0000000
8/1/20158.002139.6700000ug/l8.0000000
9/1/20158.002111.6700000ug/l8.0000000
10/1/2015296.001138.8300000ug/l296.0000000
11/1/2015122.001129.3300000ug/l122.0000000
1/1/201634.00193.6000000ug/l34.0000000
3/1/2016125.001144.2500000ug/l125.0000000
4/1/2016150.001107.7500000ug/l150.0000000
10/1/2016176.001176.0000000ug/l176.0000000
11/1/2016167.001171.5000000ug/l167.0000000

Nitrogen, Kjeldahl

Units: ug/l Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

      
1/1/2012873.003873.0000000ug/l873.0000000
2/1/20121010.003941.5000000ug/l1010.0000000
3/1/20121080.003987.6700000ug/l1080.0000000
4/1/20121220.0031045.7500000ug/l1220.0000000
5/1/20122030.0031242.6000000ug/l2030.0000000
6/1/20121310.0031253.8300000ug/l1310.0000000
7/1/20122130.0031463.3300000ug/l2130.0000000
8/1/20121800.0031595.0000000ug/l1800.0000000
9/1/20121450.0031656.6700000ug/l1450.0000000
10/1/20121470.0031698.3300000ug/l1470.0000000
11/1/2012943.0031517.1700000ug/l943.0000000
12/1/20121340.0031522.1700000ug/l1340.0000000
1/1/2013794.0031299.5000000ug/l794.0000000
2/1/2013665.0031110.3300000ug/l665.0000000
3/1/2013902.0031019.0000000ug/l902.0000000
4/1/2013519.003860.5000000ug/l519.0000000
5/1/20131070.003881.6700000ug/l1070.0000000
6/1/2013943.003815.5000000ug/l943.0000000
7/1/20132120.0031036.5000000ug/l2120.0000000
8/1/20131460.0031169.0000000ug/l1460.0000000
9/1/20131900.0031335.3300000ug/l1900.0000000
10/1/20131270.0031460.5000000ug/l1270.0000000
11/1/20131080.0021462.1700000ug/l1080.0000000
12/1/20131020.0031475.0000000ug/l1020.0000000
1/1/2014938.0041278.0000000ug/l938.0000000
2/1/20141040.0041208.0000000ug/l1040.0000000
3/1/2014848.0041032.6700000ug/l848.0000000
4/1/2014945.004978.5000000ug/l945.0000000
5/1/2014922.004952.1700000ug/l922.0000000
6/1/20141300.004998.8300000ug/l1300.0000000
7/1/20141100.0041025.8300000ug/l1100.0000000
8/1/20141460.0041095.8300000ug/l1460.0000000
9/1/20141950.0041279.5000000ug/l1950.0000000
10/1/20142870.0041600.3300000ug/l2870.0000000
11/1/20141450.0041688.3300000ug/l1450.0000000
12/1/20141780.0041768.3300000ug/l1780.0000000
1/1/20151450.0031826.6700000ug/l1450.0000000
2/1/20151820.0031886.6700000ug/l1820.0000000
3/1/20151240.0031768.3300000ug/l1240.0000000
4/1/20151200.0021490.0000000ug/l1200.0000000
5/1/20151410.0021483.3300000ug/l1410.0000000
6/1/20151460.0031430.0000000ug/l1460.0000000
7/1/20151290.0021403.3300000ug/l1290.0000000
8/1/20152030.0021438.3300000ug/l2030.0000000
9/1/20151840.0021538.3300000ug/l1840.0000000
10/1/20151830.0011643.3300000ug/l1830.0000000
11/1/20151800.0011708.3300000ug/l1800.0000000
1/1/20161340.0021768.0000000ug/l1340.0000000
2/1/20161310.0011624.0000000ug/l1310.0000000
3/1/20161210.0011498.0000000ug/l1210.0000000
4/1/2016878.0011307.6000000ug/l878.0000000
5/1/20161470.0011241.6000000ug/l1470.0000000
6/1/20161490.0011283.0000000ug/l1490.0000000
7/1/2016875.0011205.5000000ug/l875.0000000
8/1/20162370.0011382.1700000ug/l2370.0000000
9/1/20162150.0011538.8300000ug/l2150.0000000
10/1/20161670.0011670.8300000ug/l1670.0000000
11/1/20161150.0011617.5000000ug/l1150.0000000
12/1/20161220.0011572.5000000ug/l1220.0000000

Nitrogen, Nitrite + Nitrate as N

Units: ug/l Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

      
1/1/201291.00391.0000000ug/l91.0000000
2/1/201283.00387.0000000ug/l83.0000000
3/1/201292.00388.6700000ug/l92.0000000
4/1/2012167.003108.2500000ug/l167.0000000
5/1/201247.00396.0000000ug/l47.0000000
6/1/201227.00384.5000000ug/l27.0000000
7/1/201221.00372.8300000ug/l21.0000000
8/1/201220.00362.3300000ug/l20.0000000
9/1/201290.00362.0000000ug/l90.0000000
10/1/2012145.00358.3300000ug/l145.0000000
11/1/2012165.00378.0000000ug/l165.0000000
12/1/2012188.003104.8300000ug/l188.0000000
1/1/201394.003117.0000000ug/l94.0000000
2/1/201351.003122.1700000ug/l51.0000000
3/1/201335.003113.0000000ug/l35.0000000
4/1/201377.003101.6700000ug/l77.0000000
5/1/2013103.00391.3300000ug/l103.0000000
6/1/201320.00363.3300000ug/l20.0000000
7/1/201365.00358.5000000ug/l65.0000000
8/1/201372.00362.0000000ug/l72.0000000
9/1/2013116.00375.5000000ug/l116.0000000
10/1/2013156.00388.6700000ug/l156.0000000
11/1/2013230.002109.8300000ug/l230.0000000
12/1/2013371.003168.3300000ug/l371.0000000
1/1/2014182.004187.8300000ug/l182.0000000
2/1/2014116.004195.1700000ug/l116.0000000
3/1/201483.004189.6700000ug/l83.0000000
4/1/201441.004170.5000000ug/l41.0000000
5/1/201458.004141.8300000ug/l58.0000000
6/1/201459.00489.8300000ug/l59.0000000
7/1/2014101.00476.3300000ug/l101.0000000
8/1/201412.00359.0000000ug/l12.0000000
9/1/201491.00460.3300000ug/l91.0000000
10/1/20144.00454.1700000ug/l4.0000000
11/1/2014100.00461.1700000ug/l100.0000000
12/1/2014155.00477.1700000ug/l155.0000000
1/1/201575.00372.8300000ug/l75.0000000
2/1/20154.00371.5000000ug/l4.0000000
3/1/2015135.00378.8300000ug/l135.0000000
4/1/2015149.002103.0000000ug/l149.0000000
5/1/201564.00297.0000000ug/l64.0000000
6/1/2015299.003121.0000000ug/l299.0000000
7/1/201565.002119.3300000ug/l65.0000000
8/1/201517.002121.5000000ug/l17.0000000
9/1/201519.002102.1700000ug/l19.0000000
10/1/2015270.001122.3300000ug/l270.0000000
11/1/2015172.001140.3300000ug/l172.0000000
1/1/2016102.002116.0000000ug/l102.0000000
2/1/2016107.001134.0000000ug/l107.0000000
3/1/2016216.001173.4000000ug/l216.0000000
4/1/2016203.001160.0000000ug/l203.0000000
10/1/2016228.001228.0000000ug/l228.0000000
11/1/2016320.001274.0000000ug/l320.0000000
12/1/2016328.001292.0000000ug/l328.0000000

pH

Units: None Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

      
1/1/20127.3137.3100000None7.3100000
2/1/20127.6937.5000000None7.6900000
3/1/20127.6537.5500000None7.6500000
4/1/20127.3637.5000000None7.3600000
5/1/20126.6437.3300000None6.6400000
7/1/20126.5837.1800000None6.5800000
8/1/20126.5836.9600000None6.5800000
9/1/20127.4036.9100000None7.4000000
10/1/20127.3836.9200000None7.3800000
11/1/20127.6637.1200000None7.6600000
12/1/20127.4737.1800000None7.4700000
1/1/20137.4837.3300000None7.4800000
2/1/20137.5137.4800000None7.5100000
3/1/20137.4137.4900000None7.4100000
4/1/20137.2237.4600000None7.2200000
5/1/20137.4337.4200000None7.4300000
6/1/20136.9737.3400000None6.9700000
7/1/20137.3437.3100000None7.3400000
8/1/20136.9437.2200000None6.9400000
9/1/20137.2137.1900000None7.2100000
10/1/20137.0737.1600000None7.0700000
12/1/20136.6637.0400000None6.6600000
1/1/20146.7416.9200000None6.7400000
2/1/20147.1216.9600000None7.1200000
3/1/20147.4147.0000000None7.4100000
4/1/20147.0036.9900000None7.0000000
5/1/20147.4537.0600000None7.4500000
6/1/20147.0247.1200000None7.0200000
7/1/20147.1947.2000000None7.1900000
8/1/20147.3437.2400000None7.3400000
9/1/20147.5047.2500000None7.5000000
10/1/20147.0247.2500000None7.0200000
11/1/20147.3547.2400000None7.3500000
12/1/20147.5647.3300000None7.5600000
1/1/20157.2537.3400000None7.2500000
2/1/20157.2037.3100000None7.2000000
3/1/20157.3037.2800000None7.3000000
6/1/20157.3237.2700000None7.3200000
7/1/20156.8717.1700000None6.8700000
8/1/20156.9717.1200000None6.9700000
9/1/20156.8116.9900000None6.8100000
10/1/20157.4627.0900000None7.4500000
11/1/20157.4327.1400000None7.4200000
1/1/20167.1547.1600000None7.1500000
2/1/20167.0127.1700000None7.0000000
3/1/20167.4527.3000000None7.4400000
4/1/20167.3427.2800000None7.3300000
5/1/20167.2027.2300000None7.2000000
6/1/20167.5127.2800000None7.5000000
7/1/20167.7227.3700000None7.7200000
8/1/20167.1927.4000000None7.1900000
9/1/20167.0227.3300000None7.0200000
10/1/20167.4727.3500000None7.4600000
11/1/20167.4827.4000000None7.4700000
12/1/20167.5227.4000000None7.5200000

Rainfall

Units: inches Year
2016
Historical
period of record
High 45.07 55.15
Mean 15.5226335689749
Low 6.83
No. of Samples 364 5,258

Five-year Trend Graph

      
1/1/20120.49290.4900000inches0.4900000
2/1/20120.58290.5800000inches0.5800000
3/1/20121.32311.3200000inches1.3200000
4/1/20121.46241.4600000inches1.4600000
5/1/20122.17312.1700000inches2.1700000
6/1/201214.663014.6600000inches14.6600000
7/1/20127.51317.5100000inches7.5100000
8/1/20127.70317.7000000inches7.7000000
9/1/20125.48305.4800000inches5.4800000
10/1/20121.47311.4700000inches1.4700000
11/1/20120.01280.0100000inches0.0100000
12/1/20121.74311.7400000inches1.7400000
1/1/20130.48310.4800000inches0.4800000
2/1/20131.14231.1400000inches1.1400000
3/1/20131.47311.4700000inches1.4700000
4/1/20132.58302.5800000inches2.5800000
5/1/20132.00312.0000000inches2.0000000
6/1/20138.74308.7400000inches8.7400000
7/1/20137.63317.6300000inches7.6300000
8/1/20136.75316.7500000inches6.7500000
9/1/20137.75307.7500000inches7.7500000
10/1/20131.14311.1400000inches1.1400000
11/1/20131.33301.3300000inches1.3300000
12/1/20130.24310.2400000inches0.2400000
1/1/20142.72312.7200000inches2.7200000
2/1/20141.38281.3800000inches1.3800000
3/1/20144.44314.4400000inches4.4400000
4/1/20140.92290.9200000inches0.9200000
5/1/20143.15313.1500000inches3.1500000
6/1/20145.01305.0100000inches5.0100000
7/1/20141.82311.8200000inches1.8200000
8/1/20142.63282.6300000inches2.6300000
9/1/20148.64258.6400000inches8.6400000
10/1/20142.78302.7800000inches2.7800000
11/1/20143.37303.3700000inches3.3700000
12/1/20140.21310.2100000inches0.2100000
1/1/20152.47312.4700000inches2.4700000
2/1/20153.13283.1300000inches3.1300000
3/1/20151.04311.0400000inches1.0400000
4/1/20151.09301.0900000inches1.0900000
5/1/20153.46313.4600000inches3.4600000
6/1/20151.95301.9500000inches1.9500000
7/1/201513.473113.4700000inches13.4700000
8/1/20153.97313.9700000inches3.9700000
9/1/20158.95308.9500000inches8.9500000
10/1/20151.98311.9800000inches1.9800000
11/1/20150.10300.1000000inches0.1000000
12/1/20152.71312.7100000inches2.7100000
1/1/20165.98315.9800000inches5.9800000
2/1/20162.25292.2500000inches2.2500000
3/1/20161.13311.1300000inches1.1300000
4/1/20162.29302.2900000inches2.2900000
5/1/20165.26315.2600000inches5.2600000
6/1/20165.42305.4200000inches5.4200000
7/1/20163.93313.9300000inches3.9300000
8/1/201612.733112.7300000inches12.7300000
9/1/20162.94302.9400000inches2.9400000
10/1/20162.63312.6300000inches2.6300000
11/1/20160.03280.0300000inches0.0300000
12/1/20160.48310.4800000inches0.4800000
Target
inches
Threshold
inches

Salinity

Units: PSS Year
2016
Historical
period of record
High 0.46 38.60
Mean 0.35 9.33 12.3266
Low 0.16 0.00
No. of Samples 12 1,809

Five-year Trend Graph

      
1/1/20120.5130.5100000PSS0.5100000
2/1/20120.5130.5100000PSS0.5100000
3/1/20120.5230.5100000PSS0.5200000
4/1/20120.6330.5400000PSS0.6300000
5/1/20120.6630.5700000PSS0.6600000
7/1/20120.2830.5200000PSS0.2800000
8/1/20120.2530.4700000PSS0.2500000
9/1/20120.4030.4400000PSS0.4000000
10/1/20120.4130.4000000PSS0.4100000
11/1/20120.0030.2700000PSS0
12/1/20120.4130.2900000PSS0.4100000
1/1/20130.4430.3200000PSS0.4400000
2/1/20130.5030.3600000PSS0.5000000
3/1/20130.5530.3900000PSS0.5500000
4/1/20130.3430.3700000PSS0.3400000
5/1/20130.4630.4500000PSS0.4600000
6/1/20130.4030.4500000PSS0.4000000
7/1/20130.3130.4300000PSS0.3100000
8/1/20130.2730.3900000PSS0.2700000
9/1/20130.3030.3500000PSS0.3000000
10/1/20130.5030.3700000PSS0.5000000
12/1/20130.4230.3600000PSS0.4200000
1/1/20140.4610.3900000PSS0.4600000
2/1/20140.4510.4300000PSS0.4500000
3/1/20140.5140.4700000PSS0.5100000
4/1/20140.4440.4600000PSS0.4400000
5/1/20140.4540.4600000PSS0.4500000
6/1/20140.4340.4600000PSS0.4300000
7/1/20140.4540.4600000PSS0.4500000
8/1/20140.4440.4500000PSS0.4400000
9/1/20140.4140.4400000PSS0.4100000
10/1/20140.2540.4100000PSS0.2500000
11/1/20140.4440.4000000PSS0.4400000
12/1/20140.4440.4100000PSS0.4400000
1/1/20150.5530.4200000PSS0.5500000
2/1/20150.3730.4100000PSS0.3700000
3/1/20150.4730.4200000PSS0.4700000
6/1/20150.5830.4900000PSS0.5800000
7/1/20150.2810.4300000PSS0.2800000
8/1/20150.2410.3900000PSS0.2400000
9/1/20150.2110.3300000PSS0.2100000
10/1/20150.4110.3400000PSS0.4100000
11/1/20150.4910.3700000PSS0.4900000
1/1/20160.3320.3400000PSS0.3300000
2/1/20160.3610.3600000PSS0.3600000
3/1/20160.4110.4000000PSS0.4100000
4/1/20160.4610.4100000PSS0.4600000
5/1/20160.3910.3900000PSS0.3900000
6/1/20160.3610.3900000PSS0.3600000
8/1/20160.4210.4100000PSS0.4200000
9/1/20160.1610.3600000PSS0.1600000
10/1/20160.3110.3300000PSS0.3100000
11/1/20160.4210.3300000PSS0.4200000
12/1/20160.4410.3500000PSS0.4400000

Specific conductance

Units: umho Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

      
1/1/20121017.0031017.0000000umho1017.0000000
2/1/20121022.0031019.5000000umho1022.0000000
3/1/20121048.0031029.0000000umho1048.0000000
4/1/20121255.0031085.5000000umho1255.0000000
5/1/20121317.0031131.8000000umho1317.0000000
7/1/2012575.0031043.4000000umho575.0000000
8/1/2012522.003943.4000000umho522.0000000
9/1/2012819.003897.6000000umho819.0000000
10/1/2012840.003814.6000000umho840.0000000
11/1/20120.002551.2000000umho0
12/1/2012826.003597.0000000umho826.0000000
1/1/2013897.003650.6700000umho897.0000000
2/1/20131004.003731.0000000umho1004.0000000
3/1/20131105.003778.6700000umho1105.0000000
4/1/2013706.003756.3300000umho706.0000000
5/1/2013937.003912.5000000umho937.0000000
6/1/2013826.003912.5000000umho826.0000000
7/1/2013768.003891.0000000umho768.0000000
8/1/2013566.003818.0000000umho566.0000000
9/1/2013626.003738.1700000umho626.0000000
10/1/20131017.003790.0000000umho1017.0000000
12/1/2013852.003765.8000000umho852.0000000
1/1/2014921.001796.4000000umho921.0000000
2/1/2014901.001863.4000000umho901.0000000
3/1/20141025.004943.2000000umho1025.0000000
4/1/2014899.004919.6000000umho899.0000000
5/1/2014918.004919.3300000umho918.0000000
6/1/2014872.004922.6700000umho872.0000000
7/1/2014917.004922.0000000umho917.0000000
8/1/2014893.004920.6700000umho893.0000000
9/1/2014843.004890.3300000umho843.0000000
10/1/2014518.004826.8300000umho518.0000000
11/1/2014906.004824.8300000umho906.0000000
12/1/2014891.004828.0000000umho891.0000000
1/1/20151095.003857.6700000umho1095.0000000
2/1/2015753.003834.3300000umho753.0000000
3/1/2015957.003853.3300000umho957.0000000
6/1/20151176.003995.2500000umho1176.0000000
10/1/2015842.0011009.0000000umho842.0000000
11/1/2015989.0011002.3300000umho989.0000000
1/1/2016671.002834.0000000umho671.0000000
2/1/2016732.001808.5000000umho732.0000000
3/1/2016834.001813.6000000umho834.0000000
4/1/2016943.001833.8000000umho943.0000000
5/1/2016805.001797.0000000umho805.0000000
6/1/2016739.001787.3300000umho739.0000000
7/1/201645126.0018196.5000000umho45126.0000000
8/1/2016493.0018156.6700000umho493.0000000
9/1/2016334.0018073.3300000umho334.0000000
10/1/2016646.0018023.8300000umho646.0000000
11/1/2016856.0018032.3300000umho856.0000000
12/1/2016892.0018057.8300000umho892.0000000

Temperature, water

Units: deg F Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

      
1/1/201263.75263.7500000deg F63.7500000
2/1/201264.99264.3700000deg F64.9900000
3/1/201268.97265.9000000deg F68.9700000
4/1/201265.95265.9200000deg F65.9500000
5/1/201278.55268.4400000deg F78.5500000
7/1/201282.56272.2000000deg F82.5600000
8/1/201281.88275.5800000deg F81.8800000
9/1/201284.49278.6900000deg F84.4900000
10/1/201270.88279.6700000deg F70.8800000
11/1/201263.59276.6800000deg F63.5900000
12/1/201262.65274.3400000deg F62.6500000
1/1/201364.98271.4100000deg F64.9800000
2/1/201364.36268.4900000deg F64.3600000
3/1/201354.16263.4400000deg F54.1600000
4/1/201373.72263.9100000deg F73.7200000
5/1/201376.01265.9800000deg F76.0100000
6/1/201384.27269.5800000deg F84.2700000
7/1/201384.20272.7900000deg F84.2000000
8/1/201382.11275.7500000deg F82.1100000
9/1/201382.26280.4300000deg F82.2600000
10/1/201370.47279.8900000deg F70.4700000
12/1/201363.52276.5100000deg F63.5200000
1/1/201450.09169.6900000deg F50.0900000
2/1/201466.74166.6200000deg F66.7400000
3/1/201467.50363.6600000deg F67.5000000
4/1/201475.13364.6000000deg F75.1300000
5/1/201475.06366.3400000deg F75.0600000
6/1/201479.81369.0600000deg F79.8100000
7/1/201480.31374.0900000deg F80.3100000
8/1/201470.32374.6900000deg F70.3200000
9/1/201481.00376.9400000deg F81.0000000
10/1/201479.59377.6800000deg F79.5900000
11/1/201459.52375.0900000deg F59.5200000
12/1/201455.47371.0400000deg F55.4700000
1/1/201561.16267.8400000deg F61.1600000
2/1/201565.71267.0800000deg F65.7100000
3/1/201572.25265.6200000deg F72.2500000
6/1/201580.73269.9600000deg F80.7300000
7/1/201581.46175.0400000deg F81.4600000
8/1/201585.78180.0600000deg F85.7800000
9/1/201582.40182.5900000deg F82.4000000
10/1/201573.65180.8000000deg F73.6500000
11/1/201567.24178.5400000deg F67.2400000
1/1/201655.15172.8400000deg F55.1500000
2/1/201666.20168.9300000deg F66.2000000
3/1/201666.22165.6900000deg F66.2200000
4/1/201673.02165.5700000deg F73.0200000
5/1/201676.44167.4100000deg F76.4400000
6/1/201680.73169.6300000deg F80.7300000
7/1/201688.57175.2000000deg F88.5700000
8/1/201685.37178.3900000deg F85.3700000
9/1/201682.99181.1900000deg F82.9900000
10/1/201669.89180.6700000deg F69.8900000
11/1/201657.25177.4700000deg F57.2500000
12/1/201670.93175.8300000deg F70.9300000

Turbidity

Units: NTU Year
2016
Historical
period of record
High 16.00 280.00
Mean 4.57 4.13 14.45999
Low 1.80 0.42
No. of Samples 13 387

Five-year Trend Graph

      
1/1/20124.1034.1000000NTU4.1000000
2/1/20125.8034.9500000NTU5.8000000
3/1/20121.5033.8000000NTU1.5000000
4/1/20121.5533.2400000NTU1.5500000
5/1/20124.9033.5700000NTU4.9000000
6/1/20122.1033.3300000NTU2.1000000
7/1/20122.3033.0300000NTU2.3000000
8/1/20124.0032.7300000NTU4.0000000
9/1/20125.4033.3800000NTU5.4000000
10/1/20125.6034.0500000NTU5.6000000
11/1/20125.0034.0700000NTU5.0000000
12/1/20124.7034.5000000NTU4.7000000
1/1/20134.3034.8300000NTU4.3000000
2/1/20133.7034.7800000NTU3.7000000
3/1/20133.2034.4200000NTU3.2000000
4/1/20132.8033.9500000NTU2.8000000
5/1/20132.0033.4500000NTU2.0000000
6/1/20133.1033.1800000NTU3.1000000
7/1/20134.6033.2300000NTU4.6000000
8/1/20137.1033.8000000NTU7.1000000
9/1/20138.4034.6700000NTU8.4000000
10/1/20135.6035.1300000NTU5.6000000
11/1/20137.8026.1000000NTU7.8000000
12/1/20137.5036.8300000NTU7.5000000
1/1/20145.9047.0500000NTU5.9000000
2/1/20146.7046.9800000NTU6.7000000
3/1/20146.5046.6700000NTU6.5000000
4/1/20144.5046.4800000NTU4.5000000
5/1/20144.5045.9300000NTU4.5000000
6/1/20148.0046.0200000NTU8.0000000
7/1/20145.1045.8800000NTU5.1000000
8/1/20141.7045.0500000NTU1.7000000
9/1/20144.1044.6500000NTU4.1000000
10/1/20142.9044.3800000NTU2.9000000
11/1/20144.8044.4300000NTU4.8000000
12/1/20145.2043.9700000NTU5.2000000
1/1/20155.8034.0800000NTU5.8000000
2/1/20156.4034.8700000NTU6.4000000
3/1/20156.8035.3200000NTU6.8000000
4/1/20156.0025.8300000NTU6.0000000
5/1/20156.3026.0800000NTU6.3000000
6/1/20153.2035.7500000NTU3.2000000
7/1/20151.9025.1000000NTU1.9000000
8/1/20152.7024.4800000NTU2.7000000
9/1/20151.8023.6500000NTU1.8000000
10/1/20152.3013.0300000NTU2.3000000
11/1/20153.0012.4800000NTU3.0000000
1/1/20161.8022.3200000NTU1.8000000
2/1/20162.4012.2600000NTU2.4000000
3/1/201616.0015.1000000NTU16.0000000
4/1/20165.6015.7600000NTU5.6000000
5/1/20163.8015.9200000NTU3.8000000
6/1/20162.6015.3700000NTU2.6000000
7/1/20163.8015.7000000NTU3.8000000
8/1/20163.8015.9300000NTU3.8000000
9/1/20163.3013.8200000NTU3.3000000
10/1/201615.0015.3800000NTU15.0000000
11/1/20168.9016.2300000NTU8.9000000
12/1/20168.6017.2300000NTU8.6000000
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:
  • 1982A
  • 1992

Chlorophyll a

Units: mg/l Year
2016
Historical
period of record
High 0.0
Mean 0.0057 0.00880159
Low 0.0001
No. of Samples 0 66

Five-year Trend Graph

     
Target
mg/l
Threshold
0.011 mg/l

Nitrogen, Total

We were unable to determine a trend for the data available.
Units: mg/l Year
2016
Historical
period of record
High 2.6
Mean 0.831 0.58689333
Low 0.049
No. of Samples 0 94

Five-year Trend Graph

     

Phosphorus, Total

We were unable to determine a trend for the data available.
Units: mg/l Year
2016
Historical
period of record
High 1.6
Mean 0.2576 0.21867157
Low 0.051
No. of Samples 0 103

Five-year Trend Graph

     
Target
mg/l
Threshold
mg/l

Dissolved Oxygen Saturation

Note: Low DO saturation also may be naturally influenced by inflows from nearby wetlands or groundwater sources
Units: percent (%) Year
2016
Historical
period of record
High 126.1
Mean 52.48 21.1064
Low 9.00
No. of Samples 0 190

Five-year Trend Graph

     
Target
percent (%)
Threshold
56.00 percent (%)

BOD, Biochemical oxygen demand

Units: mg/l Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     

Color

Units: PCU Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     

Enterococcus Group Bacteria

Units: cfu/100ml Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     
Target
cfu/100ml
Threshold
cfu/100ml

Nitrogen, Ammonia + Ammonium as N

Units: ug/l Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     

Nitrogen, Kjeldahl

Units: ug/l Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     

Nitrogen, Nitrite + Nitrate as N

Units: ug/l Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     

Oysters

Units: Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     
1/1/20030.0010.0000000%0.0000000
1/1/200658.10258.1000000%58.1000000
1/1/200775.54275.5400000%75.5400000
1/1/200875.30275.3000000%75.3000000
1/1/200967.92267.9200000%67.9200000
1/1/201074.25274.2500000%74.2500000
1/1/201179.85279.8500000%79.8500000
1/1/201367.60267.6000000%67.6000000
1/1/201466.87266.8700000%66.8700000
1/1/201564.59264.5900000%64.5900000
1/1/201672.06272.0600000%72.0600000

pH

Units: None Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     

Rainfall

Units: inches Year
2016
Historical
period of record
High 45.1 55.2
Mean 15.5226335689749
Low 6.83
No. of Samples 364 5,258

Five-year Trend Graph

     
1/1/20120.49290.4900000inches0.4900000
2/1/20120.58290.5800000inches0.5800000
3/1/20121.32311.3200000inches1.3200000
4/1/20121.46241.4600000inches1.4600000
5/1/20122.17312.1700000inches2.1700000
6/1/201214.663014.6600000inches14.6600000
7/1/20127.51317.5100000inches7.5100000
8/1/20127.70317.7000000inches7.7000000
9/1/20125.48305.4800000inches5.4800000
10/1/20121.47311.4700000inches1.4700000
11/1/20120.01280.0100000inches0.0100000
12/1/20121.74311.7400000inches1.7400000
1/1/20130.48310.4800000inches0.4800000
2/1/20131.14231.1400000inches1.1400000
3/1/20131.47311.4700000inches1.4700000
4/1/20132.58302.5800000inches2.5800000
5/1/20132.00312.0000000inches2.0000000
6/1/20138.74308.7400000inches8.7400000
7/1/20137.63317.6300000inches7.6300000
8/1/20136.75316.7500000inches6.7500000
9/1/20137.75307.7500000inches7.7500000
10/1/20131.14311.1400000inches1.1400000
11/1/20131.33301.3300000inches1.3300000
12/1/20130.24310.2400000inches0.2400000
1/1/20142.72312.7200000inches2.7200000
2/1/20141.38281.3800000inches1.3800000
3/1/20144.44314.4400000inches4.4400000
4/1/20140.92290.9200000inches0.9200000
5/1/20143.15313.1500000inches3.1500000
6/1/20145.01305.0100000inches5.0100000
7/1/20141.82311.8200000inches1.8200000
8/1/20142.63282.6300000inches2.6300000
9/1/20148.64258.6400000inches8.6400000
10/1/20142.78302.7800000inches2.7800000
11/1/20143.37303.3700000inches3.3700000
12/1/20140.21310.2100000inches0.2100000
1/1/20152.47312.4700000inches2.4700000
2/1/20153.13283.1300000inches3.1300000
3/1/20151.04311.0400000inches1.0400000
4/1/20151.09301.0900000inches1.0900000
5/1/20153.46313.4600000inches3.4600000
6/1/20151.95301.9500000inches1.9500000
7/1/201513.473113.4700000inches13.4700000
8/1/20153.97313.9700000inches3.9700000
9/1/20158.95308.9500000inches8.9500000
10/1/20151.98311.9800000inches1.9800000
11/1/20150.10300.1000000inches0.1000000
12/1/20152.71312.7100000inches2.7100000
1/1/20165.98315.9800000inches5.9800000
2/1/20162.25292.2500000inches2.2500000
3/1/20161.13311.1300000inches1.1300000
4/1/20162.29302.2900000inches2.2900000
5/1/20165.26315.2600000inches5.2600000
6/1/20165.42305.4200000inches5.4200000
7/1/20163.93313.9300000inches3.9300000
8/1/201612.733112.7300000inches12.7300000
9/1/20162.94302.9400000inches2.9400000
10/1/20162.63312.6300000inches2.6300000
11/1/20160.03280.0300000inches0.0300000
12/1/20160.48310.4800000inches0.4800000
Target
inches
Threshold
inches

Salinity

Units: PSS Year
2016
Historical
period of record
High 36.5
Mean 14.56 10.92634
Low 0.00
No. of Samples 0 144

Five-year Trend Graph

     

Specific conductance

Units: umho Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     

Temperature, water

Units: deg F Year
2016
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     

Turbidity

Units: NTU Year
2016
Historical
period of record
High 23.0
Mean 3.26 3.48117
Low 0.65
No. of Samples 0 168

Five-year Trend Graph

     
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 SC1 2016 14 66 80 82
2 SC2 2016 107 246 353 69

Impervious Features

South 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 South Creek Basin is covered by impervious surfaces.

Loading interactive chart...

Land Use / Land Cover

South 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.