Skip Navigation LinksHomeCreek ConditionsCreek Conditions Report

Whitaker Bayou Condition Report for 2011

View 2014 Report View 2015 Report

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: 4,967 acres
  • Location: North Sarasota County, south Manatee County
  • Discharges into: Sarasota Bay

Whitaker Bayou is a highly urbanized basin that has changed in land use and hydrology since the mid-1900s. The Sarasota County 1847 General Land Office Survey indicates that Whitaker Bayou only extended about a quarter of a mile inland from the bay. The survey also displays a separate waterway that extends inland from 0.25 mile northeast of the head of Whitaker Bayou. Seasonal patterns in freshwater inflows have not changed significantly between historic and current conditions, indicating that changes in land use have not altered the intra-annual pattern of inflows to the bay. Land use has, however, affected the magnitude of total inflow to the bay, if not the relative contributions of individual sources (runoff, baseflow, irrigation, point sources). For full basin details see: 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:
  • 1936A
Pass

Chlorophyll a

Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 0.0595 0.0595
Mean 0.0025 0.002 0.00637838
Low 0.0004 0.00
No. of Samples 108 345

Five-year Trend Graph

      
1/1/20070.8330.0008300mg/l0.0006400
2/1/20072.1630.0015000mg/l0.0017800
3/1/20070.9630.0013200mg/l0.0008500
4/1/20071.3230.0013200mg/l0.0010900
5/1/200711.0430.0032600mg/l0.0044200
6/1/20074.4230.0034600mg/l0.0029000
7/1/20072.5430.0037400mg/l0.0024400
8/1/20072.6330.0038200mg/l0.0022900
9/1/20071.0730.0038400mg/l0.0010500
10/1/20074.6930.0044000mg/l0.0045400
11/1/20072.4030.0029600mg/l0.0018800
12/1/20071.1230.0024100mg/l0.0010300
1/1/20081.8830.0023000mg/l0.0017100
2/1/20080.9430.0020200mg/l0.0009200
3/1/20081.2320.0020400mg/l0.0012200
4/1/20081.8330.0015700mg/l0.0018000
5/1/20081.8930.0014800mg/l0.0016900
6/1/20081.4730.0015400mg/l0.0013700
7/1/20082.4220.0016300mg/l0.0020700
8/1/20081.7430.0017600mg/l0.0014700
9/1/20082.8330.0020300mg/l0.0025100
10/1/20081.2330.0019300mg/l0.0010800
11/1/20080.7230.0017400mg/l0.0006800
12/1/20082.4630.0019000mg/l0.0018500
1/1/200911.4930.0034100mg/l0.0061900
2/1/20091.3230.0033400mg/l0.0013100
3/1/20092.0730.0032200mg/l0.0017300
4/1/20098.5630.0044400mg/l0.0056500
5/1/20094.7750.0051100mg/l0.0038900
6/1/20092.5630.0051300mg/l0.0021800
7/1/20091.8230.0035200mg/l0.0017000
8/1/20091.4430.0035400mg/l0.0014200
9/1/20091.9830.0035200mg/l0.0017900
10/1/20091.8230.0024000mg/l0.0016100
11/1/20096.5550.0027000mg/l0.0026300
12/1/20091.4830.0025200mg/l0.0014000
1/1/20101.5390.0024700mg/l0.0014500
2/1/20105.3890.0031200mg/l0.0030400
3/1/20104.5690.0035500mg/l0.0031900
4/1/20101.7790.0035500mg/l0.0017400
6/1/20104.2990.0035100mg/l0.0030100
7/1/20101.9490.0035900mg/l0.0019000
8/1/20107.6860.0040500mg/l0.0067400
9/1/20102.29180.0035900mg/l0.0017400
10/1/20103.2090.0038800mg/l0.0020700
11/1/20101.9390.0035600mg/l0.0013800
12/1/20100.7690.0029700mg/l0.0006600
1/1/20115.4490.0035500mg/l0.0053800
2/1/20111.2490.0024800mg/l0.0010500
3/1/20110.8890.0022400mg/l0.0007800
4/1/20111.8490.0020200mg/l0.0017200
5/1/20115.8190.0026600mg/l0.0044700
6/1/20116.2290.0035700mg/l0.0057100
7/1/20113.2390.0032000mg/l0.0026300
8/1/20118.9590.0044900mg/l0.0069800
9/1/20111.3090.0045600mg/l0.0012600
10/1/20111.9790.0045800mg/l0.0019600
11/1/20111.1490.0038000mg/l0.0010700
12/1/201121.3190.0063200mg/l0.0053100
Target
mg/l
Threshold
0.02 mg/l
Pass

Nitrogen, Total

Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 2.10 15.76
Mean 0.8894 0.8971 1.80447574
Low 0.494 0.30
No. of Samples 36 248

Five-year Trend Graph

      
1/1/2007912.3330.9123300mg/l0.9118200
2/1/2007515.3330.7138300mg/l0.5087700
3/1/2007781.0030.7362200mg/l0.7702800
4/1/2007564.6730.6933300mg/l0.5440300
5/1/2007925.3330.7397300mg/l0.8996600
6/1/2007849.0030.7579400mg/l0.8251900
7/1/20071226.0030.8102200mg/l1.2215700
8/1/20071065.6730.9019500mg/l1.0577000
9/1/2007636.3330.8778300mg/l0.6358900
10/1/2007906.3330.9347800mg/l0.9058500
11/1/2007546.3330.8716100mg/l0.5448800
12/1/2007406.3330.7978300mg/l0.3980400
1/1/2008453.0030.6690000mg/l0.4401400
2/1/2008408.6730.5595000mg/l0.4047000
3/1/2008451.0020.5286100mg/l0.4479900
4/1/2008863.3330.5214400mg/l0.8533500
5/1/2008815.3330.5662800mg/l0.7924500
6/1/20081069.6730.6768300mg/l0.9670100
7/1/2008636.5020.7074200mg/l0.6361000
8/1/2008722.0030.7596400mg/l0.7192200
9/1/20081051.3330.8596900mg/l0.9760300
10/1/2008599.0030.8156400mg/l0.5822700
11/1/2008519.3330.7663100mg/l0.5124300
12/1/2008780.6730.7181400mg/l0.7696400
1/1/2009657.0030.7215600mg/l0.6515100
2/1/2009737.0030.7240600mg/l0.7334500
3/1/2009791.0030.6806700mg/l0.7834200
4/1/2009951.3330.7393900mg/l0.9155800
5/1/2009822.7540.7899600mg/l0.7873000
6/1/2009767.0030.7876800mg/l0.7622100
7/1/2009716.3330.7975700mg/l0.7099200
8/1/2009646.0030.7824000mg/l0.6455100
9/1/20091076.0030.8299000mg/l1.0736500
10/1/2009872.6730.8167900mg/l0.8398200
11/1/2009845.0040.8205000mg/l0.8010700
12/1/20091134.0030.8816700mg/l1.0824900
1/1/20101272.6730.9743900mg/l1.2415500
2/1/2010820.6731.0035000mg/l0.8199000
3/1/20101110.3331.0092200mg/l1.1015300
4/1/2010924.0031.0177800mg/l0.8682900
6/1/20101998.0031.2251300mg/l1.9020400
7/1/2010934.6731.1575300mg/l0.9332000
9/1/20101291.8361.2871300mg/l1.2231800
10/1/2010864.6731.2722900mg/l0.8537900
11/1/2010740.3331.1659000mg/l0.7230800
12/1/2010719.0030.9101000mg/l0.6983300
1/1/20111050.3330.9332300mg/l1.0330600
2/1/2011763.0030.9048600mg/l0.7563100
3/1/2011834.0030.8285600mg/l0.8273400
4/1/2011788.6730.8158900mg/l0.7825800
5/1/2011950.0030.8508300mg/l0.9391700
6/1/20111114.6730.9167800mg/l1.0953100
7/1/20111210.0030.9433900mg/l1.0703100
8/1/20111346.0031.0405600mg/l1.3073100
9/1/2011884.0031.0488900mg/l0.8587800
10/1/2011676.0031.0301100mg/l0.6570200
11/1/2011766.3330.9995000mg/l0.7152300
12/1/2011858.3330.9567800mg/l0.8334400
Pass

Phosphorus, Total

Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 0.836 2.38
Mean 0.3399 0.3117 0.25409388
Low 0.111 0.082
No. of Samples 108 387

Five-year Trend Graph

      
1/1/2007228.0030.2280000mg/l0.2022000
2/1/2007122.6730.1753400mg/l0.1182400
3/1/2007218.3330.1896700mg/l0.2143500
4/1/2007250.6730.2049200mg/l0.2443700
5/1/2007416.0030.2471300mg/l0.4148300
6/1/2007565.0030.3001100mg/l0.5506000
7/1/2007468.6730.3402200mg/l0.4596100
8/1/2007325.0030.3739500mg/l0.3191900
9/1/2007276.0030.3835600mg/l0.2743900
10/1/2007337.6730.3980600mg/l0.3366400
11/1/2007311.0030.3805600mg/l0.2738900
12/1/2007168.3330.3144500mg/l0.1639900
1/1/2008161.0030.2631700mg/l0.1602100
2/1/2008231.0030.2475000mg/l0.2238600
3/1/2008210.5020.2365800mg/l0.2003700
4/1/2008268.0030.2249700mg/l0.2588800
5/1/2008365.0030.2339700mg/l0.3637800
6/1/2008430.3330.2776400mg/l0.4208600
7/1/2008325.0020.3049700mg/l0.3242500
8/1/2008282.6730.3135800mg/l0.2722300
9/1/2008353.6730.3374500mg/l0.3431200
10/1/2008187.6730.3240600mg/l0.1759600
11/1/2008157.6730.2895000mg/l0.1473900
12/1/2008228.3330.2558400mg/l0.2169500
1/1/2009246.6730.2427800mg/l0.2339000
2/1/2009239.3330.2355600mg/l0.2228000
3/1/2009567.3330.2711700mg/l0.5604600
4/1/2009438.6730.3130000mg/l0.4338900
5/1/2009414.5040.3558100mg/l0.4083300
6/1/2009423.6730.3883600mg/l0.4199000
7/1/2009346.0030.4049200mg/l0.3377000
8/1/2009404.0030.4323600mg/l0.4039500
9/1/2009341.6730.3947500mg/l0.3326300
10/1/2009309.6730.3732500mg/l0.3021800
11/1/2009187.2540.3353800mg/l0.1846900
12/1/2009223.3330.3019900mg/l0.2189000
1/1/2010187.0090.2754900mg/l0.1847100
2/1/2010227.0090.2459900mg/l0.2146900
3/1/2010242.0090.2293800mg/l0.2329100
4/1/2010258.0090.2207600mg/l0.2515100
6/1/20101316.6790.4461300mg/l1.1117900
7/1/2010397.0090.4881300mg/l0.3857800
8/1/2010574.0060.5575300mg/l0.5521300
9/1/2010367.33180.5826000mg/l0.3625700
10/1/2010264.0090.5838000mg/l0.2560900
11/1/2010239.6790.5264500mg/l0.2292600
12/1/2010165.6790.3346100mg/l0.1616400
1/1/2011515.3390.3543300mg/l0.4822300
2/1/2011227.3390.2965600mg/l0.2234000
3/1/2011297.3390.2848900mg/l0.2952700
4/1/2011324.6790.2950000mg/l0.2995000
5/1/2011607.6790.3563300mg/l0.5862300
6/1/2011602.3390.4291100mg/l0.5966000
7/1/2011335.0090.3990600mg/l0.3332000
8/1/2011455.3390.4370600mg/l0.4496300
9/1/2011240.6790.4276100mg/l0.2369500
10/1/2011242.3390.4138900mg/l0.2358300
11/1/2011249.0090.3541100mg/l0.2467900
12/1/2011445.0090.3278900mg/l0.3453500
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 210.60 210.60
Mean 114.07 84.51 42.53202
Low 75.60 7.0588
No. of Samples 112 504

Five-year Trend Graph

      
1/1/200784.50384.5000000percent (%)83.7400000
2/1/2007144.103114.3000000percent (%)144.0800000
3/1/200788.433105.6800000percent (%)84.3200000
4/1/200786.873100.9800000percent (%)84.0600000
5/1/200740.30388.8400000percent (%)33.6800000
6/1/200720.85277.5100000percent (%)18.7300000
7/1/200756.73372.8800000percent (%)53.6800000
8/1/200770.23360.5700000percent (%)67.0800000
9/1/200780.70359.2800000percent (%)80.6200000
10/1/2007133.93367.1200000percent (%)132.9900000
11/1/200760.10370.4200000percent (%)58.3200000
12/1/200776.63379.7200000percent (%)75.2400000
1/1/200874.53382.6900000percent (%)73.1000000
2/1/200884.97385.1400000percent (%)77.3800000
3/1/200828.05276.3700000percent (%)27.9300000
4/1/200873.20266.2500000percent (%)55.4400000
5/1/200886.47370.6400000percent (%)80.0000000
6/1/200890.55272.9600000percent (%)85.3100000
9/1/200877.43381.9100000percent (%)77.0100000
10/1/2008119.03393.3700000percent (%)118.8300000
11/1/2008116.103100.7800000percent (%)115.9000000
12/1/2008121.873108.6100000percent (%)118.4200000
1/1/200988.703104.6300000percent (%)88.3900000
2/1/2009107.973105.1800000percent (%)107.2500000
4/1/2009101.973107.3200000percent (%)76.4300000
5/1/200994.235102.9500000percent (%)92.6300000
6/1/200976.73393.9200000percent (%)47.7400000
7/1/200986.20393.4200000percent (%)85.9700000
8/1/2009102.30392.2900000percent (%)101.9100000
9/1/200975.40389.4700000percent (%)74.6600000
10/1/200983.03386.3200000percent (%)82.4900000
11/1/200951.63579.2200000percent (%)28.3200000
12/1/2009112.80385.2300000percent (%)103.7900000
1/1/2010116.20990.2300000percent (%)114.6100000
2/1/2010128.10694.5300000percent (%)128.0700000
3/1/2010113.979100.9600000percent (%)113.7700000
4/1/2010163.806114.4200000percent (%)158.9400000
7/1/201081.3116121.8000000percent (%)81.2400000
9/1/2010134.8224126.6400000percent (%)133.0100000
10/1/201083.112499.7500000percent (%)82.1900000
11/1/2010146.7024111.4900000percent (%)146.5300000
12/1/2010108.9624110.9800000percent (%)107.8300000
1/1/201181.8216111.0800000percent (%)81.7500000
2/1/2011137.4424115.4800000percent (%)133.7700000
3/1/2011119.6124112.9400000percent (%)109.4900000
4/1/2011159.0924125.6000000percent (%)155.2600000
5/1/201194.2624116.8600000percent (%)92.9700000
Target
percent (%)
Threshold
38.00 percent (%)

BOD, Biochemical oxygen demand

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

Five-year Trend Graph

      
1/1/20070.5530.5500000mg/l0.5500000
2/1/20070.8730.7100000mg/l0.8300000
3/1/20070.9230.7800000mg/l0.9200000
4/1/20070.5630.7300000mg/l0.5600000
5/1/20071.4830.8800000mg/l1.1700000
6/1/20071.1930.9300000mg/l1.1500000
8/1/20071.4931.1300000mg/l1.1600000
9/1/20070.7031.0800000mg/l0.7000000
10/1/20070.8431.1400000mg/l0.8400000
11/1/20070.7831.0000000mg/l0.7700000
12/1/20070.5930.8800000mg/l0.5900000
1/1/20080.5030.8200000mg/l0.5000000
2/1/20080.5030.6500000mg/l0.5000000
3/1/20080.5120.6200000mg/l0.5000000
4/1/20081.3930.7100000mg/l1.1500000
5/1/20081.0730.7600000mg/l0.8900000
6/1/20081.0530.8400000mg/l0.9300000
7/1/20080.9820.9200000mg/l0.9000000
8/1/20080.6830.9500000mg/l0.6600000
9/1/20081.3031.0800000mg/l1.1100000
10/1/20080.5930.9500000mg/l0.5900000
11/1/20080.5330.8600000mg/l0.5300000
12/1/20080.6730.7900000mg/l0.6500000
1/1/20090.6630.7400000mg/l0.6600000
2/1/20090.9230.7800000mg/l0.9200000
3/1/20090.7630.6900000mg/l0.7500000
4/1/20091.6130.8600000mg/l1.5900000
5/1/20090.9430.9300000mg/l0.9300000
6/1/20090.8330.9500000mg/l0.7900000
7/1/20090.6330.9500000mg/l0.6300000
8/1/20090.9230.9500000mg/l0.8900000
9/1/20090.8530.9600000mg/l0.8500000
10/1/20090.7830.8300000mg/l0.7700000
11/1/20090.5630.7600000mg/l0.5500000
12/1/20090.9530.7800000mg/l0.8800000
1/1/20100.7790.8100000mg/l0.7600000
2/1/20100.9790.8100000mg/l0.9400000
3/1/20101.1190.8600000mg/l1.0600000
4/1/20100.6490.8300000mg/l0.6300000
6/1/20101.3990.9800000mg/l1.2400000
7/1/20101.0491.0300000mg/l1.0100000
8/1/20101.6161.1600000mg/l1.5900000
9/1/20100.82181.1000000mg/l0.7700000
10/1/20100.7891.1300000mg/l0.7500000
11/1/20100.7491.0600000mg/l0.7300000
12/1/20100.5690.9300000mg/l0.5600000
1/1/20112.4091.1500000mg/l2.3900000
2/1/20110.8991.0300000mg/l0.8900000
3/1/20111.1491.0900000mg/l1.1400000
4/1/20111.1291.1400000mg/l1.1100000
5/1/20110.9791.1800000mg/l0.9400000
6/1/20111.5491.3400000mg/l1.4900000
7/1/20110.6891.0600000mg/l0.6600000
8/1/20111.0491.0800000mg/l1.0000000
9/1/20110.5490.9800000mg/l0.5400000
10/1/20110.7990.9300000mg/l0.7700000
11/1/20111.2990.9800000mg/l1.0600000
12/1/20110.7490.8500000mg/l0.7100000

Color

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

Five-year Trend Graph

      

Escherichia coli

Units: cfu/100ml Year
2011
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
2011
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

      
1/1/200759.67359.6700000ug/l59.4200000
2/1/200749.67354.6700000ug/l49.2800000
3/1/200782.33363.8900000ug/l82.0000000
4/1/2007150.67385.5900000ug/l126.4000000
5/1/2007235.003115.4700000ug/l216.6500000
6/1/2007157.673122.5000000ug/l142.4900000
7/1/2007265.333156.7800000ug/l259.6100000
8/1/2007137.673171.4500000ug/l120.1000000
9/1/2007213.333193.2800000ug/l164.9200000
10/1/2007137.333191.0600000ug/l135.8200000
11/1/2007107.333169.7800000ug/l102.8100000
12/1/200754.673152.6100000ug/l53.3300000
1/1/200846.333116.1100000ug/l45.4200000
2/1/200840.67399.9400000ug/l40.3400000
3/1/200884.50278.4700000ug/l76.2100000
4/1/200839.67362.2000000ug/l38.7100000
5/1/2008136.00366.9700000ug/l119.0600000
6/1/2008100.33374.5800000ug/l100.2500000
7/1/200843.50274.1100000ug/l43.0100000
8/1/2008119.67387.2800000ug/l113.6300000
9/1/2008160.00399.8600000ug/l143.6100000
10/1/200895.003109.0800000ug/l88.7400000
11/1/200842.00393.4200000ug/l41.4000000
12/1/200850.33385.0800000ug/l49.9000000
1/1/200998.33394.2200000ug/l89.4600000
2/1/200997.33390.5000000ug/l96.6400000
3/1/200981.00377.3300000ug/l79.9300000
4/1/2009248.673102.9400000ug/l182.6400000
5/1/2009150.754121.0700000ug/l141.8100000
6/1/200950.673121.1300000ug/l50.5300000
7/1/200967.333115.9600000ug/l61.3500000
8/1/2009104.003117.0700000ug/l100.6900000
9/1/2009119.333123.4600000ug/l102.5400000
10/1/200953.67390.9600000ug/l43.2300000
11/1/200960.00475.8300000ug/l31.6500000
12/1/200952.00376.0600000ug/l40.9400000
1/1/2010225.679102.4500000ug/l179.3400000
2/1/201057.00994.6100000ug/l56.4100000
3/1/2010103.00991.8900000ug/l98.5800000
4/1/2010104.009100.2800000ug/l89.0500000
6/1/2010536.679205.2700000ug/l331.5100000
7/1/2010306.339221.4000000ug/l296.6600000
8/1/2010263.006262.6000000ug/l248.9900000
9/1/201078.6718257.7300000ug/l70.9400000
10/1/201070.339251.0000000ug/l69.5300000
11/1/201032.339214.5600000ug/l32.0900000
12/1/201016.009127.7800000ug/l15.9200000
1/1/201146.67984.5000000ug/l45.6400000
2/1/201120.33944.0600000ug/l20.1900000
3/1/201137.33937.1700000ug/l37.2400000
4/1/201145.00932.9400000ug/l44.9900000
5/1/201163.00938.0600000ug/l61.7900000
6/1/2011272.67980.8300000ug/l252.4000000
7/1/201131.33978.2800000ug/l17.0900000
8/1/2011105.67992.5000000ug/l63.6700000
9/1/201119.33989.5000000ug/l17.0200000
10/1/201116.33984.7200000ug/l13.5400000
11/1/201175.33986.7800000ug/l28.3800000
12/1/201148.33949.3900000ug/l37.3200000

Nitrogen, Kjeldahl

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

Five-year Trend Graph

      
1/1/2007880.333880.3300000ug/l879.0500000
2/1/2007486.333683.3300000ug/l481.8400000
3/1/2007769.673712.1100000ug/l759.1500000
4/1/2007556.333673.1700000ug/l534.5200000
5/1/2007900.673718.6700000ug/l870.7400000
6/1/2007832.673737.6700000ug/l804.6200000
7/1/20071108.673775.7200000ug/l1096.9600000
8/1/2007943.003851.8400000ug/l927.0500000
9/1/2007479.333803.4500000ug/l470.0900000
10/1/2007695.333826.6100000ug/l692.9100000
11/1/2007499.003759.6700000ug/l496.6200000
12/1/2007385.333685.1100000ug/l379.1500000
1/1/2008434.333572.7200000ug/l423.9000000
2/1/2008402.673482.6700000ug/l398.8600000
3/1/2008447.002477.2800000ug/l443.9700000
4/1/2008859.333504.6100000ug/l849.3000000
5/1/2008794.673553.8900000ug/l773.9400000
6/1/20081056.673665.7800000ug/l950.1800000
7/1/2008605.002694.2200000ug/l604.9300000
8/1/2008665.003737.9500000ug/l658.3900000
9/1/2008918.673816.5600000ug/l845.7900000
10/1/2008537.333762.8900000ug/l521.7000000
11/1/2008505.333714.6700000ug/l496.7700000
12/1/2008768.003666.5600000ug/l757.0600000
1/1/2009653.003674.5600000ug/l647.4800000
2/1/2009733.003685.8900000ug/l729.4300000
3/1/2009777.333662.3300000ug/l768.8700000
4/1/2009931.333728.0000000ug/l889.7300000
5/1/2009806.254778.1500000ug/l768.1200000
6/1/2009752.003775.4900000ug/l745.7900000
7/1/2009681.673780.2600000ug/l675.6100000
8/1/2009539.673748.0400000ug/l536.7300000
9/1/2009820.673755.2700000ug/l803.2600000
10/1/2009752.003725.3800000ug/l739.0300000
11/1/2009729.254712.5400000ug/l701.6200000
12/1/2009785.673718.1600000ug/l762.1300000
1/1/2010846.679745.6600000ug/l818.6700000
2/1/2010738.679778.8200000ug/l736.8300000
3/1/2010911.339793.9300000ug/l908.0300000
4/1/2010766.009796.2700000ug/l751.0400000
6/1/20101756.6791003.8700000ug/l1632.1200000
7/1/2010675.679969.6700000ug/l675.3800000
8/1/20101383.3361098.6000000ug/l1368.4900000
9/1/2010920.33181100.4000000ug/l867.5200000
10/1/2010768.0091100.8000000ug/l765.4600000
11/1/2010648.6791025.4500000ug/l643.7000000
12/1/2010581.009829.5000000ug/l578.1800000
1/1/2011862.009860.5600000ug/l852.3300000
2/1/2011716.679749.4500000ug/l713.2500000
3/1/2011811.339731.2800000ug/l804.8300000
4/1/2011711.679721.8900000ug/l704.1600000
5/1/2011811.679749.0600000ug/l800.5300000
6/1/2011985.679816.5000000ug/l962.5800000
7/1/2011790.339804.5600000ug/l766.3100000
8/1/20111011.339853.6700000ug/l977.6400000
9/1/2011736.009841.1100000ug/l729.3400000
10/1/2011561.679816.1100000ug/l554.9400000
11/1/2011686.339795.2200000ug/l654.4000000
12/1/2011725.009751.7800000ug/l719.0300000

Nitrogen, Nitrite + Nitrate as N

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

Five-year Trend Graph

      
1/1/200732.00332.0000000ug/l20.1200000
2/1/200729.00330.5000000ug/l12.8600000
3/1/200711.33324.1100000ug/l7.4700000
4/1/20078.33320.1700000ug/l6.8400000
5/1/200724.67321.0700000ug/l16.1600000
6/1/200716.33320.2800000ug/l8.6900000
7/1/2007117.33334.5000000ug/l80.3900000
8/1/2007122.67350.1100000ug/l112.5700000
9/1/2007157.00374.3900000ug/l131.6600000
10/1/2007211.003108.1700000ug/l208.5200000
11/1/200747.333111.9400000ug/l46.1300000
12/1/200721.003112.7200000ug/l14.1900000
1/1/200818.67396.2800000ug/l13.0500000
2/1/20086.00376.8300000ug/l5.7700000
3/1/20084.00251.3300000ug/l4.0000000
4/1/20084.00316.8300000ug/l4.0000000
5/1/200820.67312.3900000ug/l14.2300000
6/1/200813.00311.0600000ug/l10.1300000
7/1/200831.50213.2000000ug/l28.4600000
8/1/200857.00321.7000000ug/l50.7300000
9/1/2008132.67343.1400000ug/l123.8000000
10/1/200861.67352.7500000ug/l58.2800000
11/1/200814.00351.6400000ug/l9.2800000
12/1/200812.67351.5900000ug/l10.3000000
1/1/20094.00347.0000000ug/l4.0000000
2/1/20094.00338.1700000ug/l4.0000000
3/1/200913.67318.3400000ug/l10.2600000
4/1/200920.00311.3900000ug/l12.8300000
5/1/200916.50411.8100000ug/l12.4900000
6/1/200915.00312.2000000ug/l8.4000000
7/1/200934.67317.3100000ug/l25.2900000
8/1/2009106.33334.3600000ug/l93.9600000
9/1/2009255.33374.6400000ug/l226.9500000
10/1/2009120.67391.4200000ug/l71.0900000
11/1/2009153.003114.1700000ug/l102.7000000
12/1/2009348.333169.7200000ug/l314.9500000
1/1/2010426.009234.9400000ug/l418.8900000
2/1/201082.009230.8900000ug/l69.7600000
3/1/2010199.009221.5000000ug/l181.1100000
4/1/2010158.009227.7200000ug/l55.7700000
6/1/2010241.339221.2700000ug/l214.4400000
7/1/2010259.009187.8700000ug/l256.2500000
8/1/2010248.676221.2000000ug/l246.9100000
9/1/2010371.5018255.7000000ug/l342.1800000
10/1/201096.679243.4300000ug/l64.2000000
11/1/201091.679218.1400000ug/l54.2800000
12/1/2010138.009200.9200000ug/l59.6800000
1/1/2011188.339189.1400000ug/l176.0400000
2/1/201146.339155.4200000ug/l33.0400000
3/1/201122.67997.2800000ug/l15.8700000
4/1/201177.00994.0000000ug/l76.7400000
5/1/2011138.339101.7800000ug/l135.4700000
6/1/2011129.009100.2800000ug/l127.2500000
7/1/2011419.679138.8300000ug/l235.9200000
8/1/2011334.679186.8900000ug/l329.0200000
9/1/2011148.009207.7800000ug/l105.2200000
10/1/2011114.339214.0000000ug/l77.6500000
11/1/201180.009204.2800000ug/l46.9300000
12/1/2011133.339205.0000000ug/l58.4400000

pH

Units: None Year
2011
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

      
1/1/20078.1238.1200000None8.1200000
2/1/20077.8637.9900000None7.8600000
3/1/20077.6737.8800000None7.6700000
4/1/20077.9337.9000000None7.9300000
5/1/20079.2038.1600000None9.0000000
6/1/20077.9338.1200000None7.8400000
7/1/20076.7337.8900000None6.7300000
8/1/20077.0437.7500000None7.0400000
9/1/20077.9837.8000000None7.9800000
10/1/20078.4037.8800000None8.3900000
11/1/20076.9537.5100000None6.9500000
12/1/20077.3337.4100000None7.3300000
1/1/20087.1337.4700000None7.1200000
2/1/20087.7737.5900000None7.7700000
3/1/20087.0827.4400000None7.0800000
4/1/20087.5727.3100000None7.5400000
5/1/20087.7737.4400000None7.7600000
7/1/20087.8527.6100000None7.8400000
9/1/20087.7737.7400000None7.7700000
10/1/20088.0137.8500000None8.0100000
11/1/20088.0637.9200000None8.0600000
12/1/20087.8737.9100000None7.8700000
1/1/20097.8137.9000000None7.8100000
2/1/20097.9337.9100000None7.9300000
4/1/20097.7037.8700000None7.6900000
5/1/20097.6457.7900000None7.6300000
6/1/20097.8437.7800000None7.8400000
7/1/20097.9537.8100000None7.9500000
8/1/20097.8437.7900000None7.8400000
9/1/20097.4637.7400000None7.4600000
10/1/20097.9637.7800000None7.9500000
11/1/20097.7157.7900000None7.7000000
12/1/20097.6837.7700000None7.6700000
1/1/20107.7297.7300000None7.7200000
2/1/20108.1367.7800000None8.1200000
3/1/20107.7597.8300000None7.7500000
4/1/20108.1167.8500000None8.1000000
7/1/20107.9167.9800000None7.9100000
9/1/20108.0798.0300000None8.0700000
10/1/20107.8497.9400000None7.8400000
11/1/20108.0297.9600000None8.0100000
12/1/20107.9997.9700000None7.9900000
1/1/20117.8967.9600000None7.8900000
2/1/20118.0097.9700000None7.9900000
3/1/20118.1697.9800000None8.1500000
4/1/20118.0398.0200000None8.0300000
5/1/20118.1998.0400000None8.1900000

Rainfall

Units: inches Year
2011
Historical
period of record
High 39.87 56.99
Mean 14.0782772975484
Low 8.52
No. of Samples 363 5,445

Five-year Trend Graph

      
1/1/20072.79312.7900000inches2.7900000
2/1/20071.76281.7600000inches1.7600000
3/1/20070.31310.3100000inches0.3100000
4/1/20072.56292.5600000inches2.5600000
5/1/20070.96310.9600000inches0.9600000
6/1/20073.18303.1800000inches3.1800000
7/1/20078.28318.2800000inches8.2800000
8/1/20074.65314.6500000inches4.6500000
9/1/20075.15305.1500000inches5.1500000
10/1/20075.48315.4800000inches5.4800000
11/1/20070.22300.2200000inches0.2200000
12/1/20070.89310.8900000inches0.8900000
1/1/20081.89311.8900000inches1.8900000
2/1/20082.16292.1600000inches2.1600000
3/1/20083.02313.0200000inches3.0200000
4/1/20082.62302.6200000inches2.6200000
5/1/20081.86311.8600000inches1.8600000
6/1/20083.91303.9100000inches3.9100000
7/1/20086.83316.8300000inches6.8300000
8/1/20086.03316.0300000inches6.0300000
9/1/20084.26304.2600000inches4.2600000
10/1/20081.63311.6300000inches1.6300000
11/1/20080.69300.6900000inches0.6900000
12/1/20081.43301.4300000inches1.4300000
1/1/20091.56331.5600000inches1.5600000
2/1/20090.56280.5600000inches0.5600000
3/1/20091.22311.2200000inches1.2200000
4/1/20091.64301.6400000inches1.6400000
5/1/20094.54314.5400000inches4.5400000
6/1/20094.21304.2100000inches4.2100000
7/1/20095.75315.7500000inches5.7500000
8/1/20094.99314.9900000inches4.9900000
9/1/20098.83308.8300000inches8.8300000
10/1/20091.00311.0000000inches1.0000000
11/1/20091.53301.5300000inches1.5300000
12/1/20093.03313.0300000inches3.0300000
1/1/20103.95313.9500000inches3.9500000
2/1/20102.11282.1100000inches2.1100000
3/1/20105.09315.0900000inches5.0900000
4/1/20101.38301.3800000inches1.3800000
5/1/20100.87310.8700000inches0.8700000
6/1/20106.31306.3100000inches6.3100000
7/1/20105.45315.4500000inches5.4500000
8/1/201012.113112.1100000inches12.1100000
9/1/20102.24302.2400000inches2.2400000
10/1/20100.01310.0100000inches0.0100000
11/1/20102.77302.7700000inches2.7700000
12/1/20100.86310.8600000inches0.8600000
1/1/20112.83312.8300000inches2.8300000
2/1/20110.73280.7300000inches0.7300000
3/1/20115.81315.8100000inches5.8100000
4/1/20111.49301.4900000inches1.4900000
5/1/20112.21312.2100000inches2.2100000
6/1/20113.24303.2400000inches3.2400000
7/1/20118.71318.7100000inches8.7100000
8/1/20117.69317.6900000inches7.6900000
9/1/20114.01304.0100000inches4.0100000
10/1/20111.88301.8800000inches1.8800000
11/1/20111.10301.1000000inches1.1000000
12/1/20110.17300.1700000inches0.1700000
Target
inches
Threshold
inches

Salinity

Units: PSS Year
2011
Historical
period of record
High 0.42 20.48
Mean 0.31 0.41 1.11553
Low 0.16 0.00
No. of Samples 42 519

Five-year Trend Graph

      
1/1/20070.2930.2900000PSS0.2900000
2/1/20070.3330.3100000PSS0.3300000
3/1/20070.3530.3200000PSS0.3500000
4/1/20070.3330.3300000PSS0.3300000
5/1/20070.4030.3400000PSS0.4000000
6/1/20073.2430.8200000PSS0.9800000
7/1/20070.2630.8200000PSS0.2600000
8/1/20070.2830.8100000PSS0.2800000
9/1/20070.2730.8000000PSS0.2700000
10/1/20070.2230.7800000PSS0.2200000
11/1/20070.3130.7600000PSS0.3100000
12/1/20070.3430.2800000PSS0.3400000
1/1/20080.3230.2900000PSS0.3200000
2/1/20080.3630.3000000PSS0.3600000
3/1/20080.3220.3100000PSS0.3200000
4/1/20080.4320.3500000PSS0.4200000
5/1/20080.3530.3500000PSS0.3500000
6/1/20080.4620.3700000PSS0.4500000
7/1/20080.2620.3600000PSS0.2500000
9/1/20080.2930.3600000PSS0.2900000
10/1/20080.3230.3400000PSS0.3200000
11/1/20080.3430.3300000PSS0.3400000
12/1/20080.3230.3100000PSS0.3200000
1/1/20090.3730.3300000PSS0.3700000
2/1/20090.3730.3400000PSS0.3700000
4/1/20090.4130.3600000PSS0.4100000
5/1/20090.2930.3500000PSS0.2900000
6/1/20097.0331.6900000PSS1.2400000
7/1/20090.3231.6800000PSS0.3200000
8/1/20090.2231.6500000PSS0.2200000
9/1/20090.2831.4300000PSS0.2800000
10/1/20090.3331.4100000PSS0.3300000
11/1/20090.3131.4200000PSS0.3100000
12/1/20090.3030.2900000PSS0.3000000
1/1/20100.3190.2900000PSS0.3100000
2/1/20100.3160.3100000PSS0.3000000
3/1/20100.2690.3000000PSS0.2600000
4/1/20103.9560.9100000PSS1.5300000
7/1/20100.2561.1900000PSS0.2400000
9/1/20100.2991.5000000PSS0.2900000
10/1/20100.3390.2900000PSS0.3300000
11/1/20100.2890.2900000PSS0.2800000
12/1/20100.2990.2900000PSS0.2800000
1/1/20110.1960.2800000PSS0.1800000
2/1/20110.3390.2900000PSS0.3300000
3/1/20110.3490.2900000PSS0.3300000
4/1/20110.3290.2900000PSS0.3200000
5/1/20110.3790.3100000PSS0.3700000

Specific conductance

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

Five-year Trend Graph

      
1/1/2007605.003605.0000000umho601.2700000
2/1/20076653.3333629.1700000umho6652.8500000
3/1/2007718.3332658.8900000umho714.9400000
4/1/2007669.6732161.5800000umho667.0000000
5/1/2007821.3331893.5300000umho816.6000000
6/1/2007996.6731744.0600000umho906.0500000
7/1/2007562.0031736.8900000umho561.5700000
8/1/2007579.673724.6100000umho577.9500000
9/1/2007558.003697.8900000umho557.7200000
10/1/2007452.333661.6700000umho451.9200000
11/1/2007645.673632.3900000umho644.0500000
12/1/2007698.673582.7200000umho695.3600000
1/1/2008650.673597.5000000umho648.7800000
2/1/2008738.673624.0000000umho726.2800000
3/1/2008651.002639.5000000umho643.7300000
4/1/2008875.002709.9500000umho864.8300000
5/1/2008721.333722.5600000umho715.9400000
6/1/2008908.002757.4500000umho907.9300000
7/1/2008534.002738.0000000umho533.1000000
9/1/2008595.003726.6700000umho593.2500000
10/1/2008664.333684.5300000umho661.0000000
11/1/2008689.333678.1300000umho687.3000000
12/1/2008656.333627.8000000umho653.4000000
1/1/2009756.673672.3300000umho750.6300000
2/1/2009755.333686.1700000umho751.6900000
4/1/2009825.003736.5300000umho822.2700000
5/1/200915133.9763625.4600000umho133.1500000
6/1/200911396.6735773.5300000umho2382.7400000
7/1/2009659.3335754.0600000umho657.0800000
8/1/2009468.0035696.5900000umho466.0500000
9/1/2009581.6734844.1100000umho581.6000000
10/1/2009674.0034818.9400000umho671.9900000
11/1/200924252.3366338.6700000umho5483.4900000
12/1/2009620.6734542.6700000umho619.1100000
1/1/2010624.6794536.8900000umho623.4900000
2/1/2010627.0064563.3900000umho625.0000000
3/1/2010537.6794556.0600000umho533.7400000
4/1/2010640.0034550.3900000umho640.0000000
7/1/2010512.006579.1700000umho511.8800000
9/1/20100.619384.2000000umho0.6100000
10/1/2010684.339398.9800000umho681.1800000
11/1/2010584.679445.4000000umho581.5600000
12/1/2010589.009474.1200000umho578.3800000
1/1/2011379.506447.6200000umho375.7100000
2/1/2011677.679485.9600000umho675.1200000
3/1/2011699.009602.3600000umho692.7500000
4/1/2011661.009598.4700000umho657.3100000
5/1/2011762.679628.1400000umho756.8000000

Temperature, water

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

Five-year Trend Graph

      
1/1/200768.12368.1200000deg F68.1200000
2/1/200765.39366.7600000deg F65.3800000
3/1/200773.03368.8500000deg F72.9900000
4/1/200775.93370.6200000deg F75.8800000
5/1/200772.66371.0300000deg F72.6600000
6/1/200779.09372.3700000deg F79.0900000
7/1/200779.53374.2700000deg F79.5300000
8/1/200781.54376.9600000deg F81.5300000
9/1/200781.96378.4500000deg F81.9500000
10/1/200776.78378.5900000deg F76.7800000
11/1/200770.15378.1800000deg F70.1500000
12/1/200761.21375.2000000deg F61.2100000
1/1/200863.46372.5200000deg F63.4500000
2/1/200867.52370.1800000deg F67.5100000
3/1/200869.13268.0400000deg F69.1200000
4/1/200874.89267.7300000deg F74.8700000
5/1/200879.39369.2700000deg F79.3700000
6/1/200883.74273.0200000deg F83.7300000
7/1/200887.39277.0100000deg F87.3500000
9/1/200884.85382.0500000deg F84.8200000
10/1/200865.40380.1500000deg F65.3200000
11/1/200860.15376.3100000deg F60.1100000
12/1/200872.20374.0000000deg F72.1800000
1/1/200967.76370.0700000deg F67.7300000
2/1/200967.97369.7200000deg F67.9300000
4/1/200975.95368.8100000deg F75.8900000
5/1/200982.46573.2700000deg F82.4400000
6/1/200985.00375.8300000deg F84.9400000
7/1/200982.59378.7900000deg F82.5500000
8/1/200981.63381.5300000deg F81.6200000
9/1/200986.40382.3400000deg F86.4000000
10/1/200978.94382.8400000deg F78.9300000
11/1/200971.58581.0200000deg F71.3700000
12/1/200974.44379.2600000deg F74.4400000
1/1/201054.92674.6500000deg F54.9000000
2/1/201066.20472.0800000deg F66.1900000
3/1/201069.13669.2000000deg F69.1100000
4/1/201053.58364.9800000deg F42.2600000
7/1/201087.81469.1800000deg F87.8100000
9/1/201086.91676.1000000deg F86.8700000
10/1/201080.78685.1700000deg F80.7400000
11/1/201075.25682.6900000deg F75.2100000
12/1/201052.51676.6500000deg F52.4700000
1/1/201167.24472.5400000deg F67.2400000
2/1/201175.16672.9800000deg F75.1200000
3/1/201180.25671.8700000deg F80.2000000
4/1/201182.65672.1800000deg F82.5700000
5/1/201183.31673.5200000deg F83.2100000

Turbidity

Units: NTU Year
2011
Historical
period of record
High 56.40 56.40
Mean 2.86 3.51 5.9861
Low 0.81 0.55
No. of Samples 108 454

Five-year Trend Graph

      
1/1/20075.6935.6900000NTU3.6100000
2/1/20071.7733.7300000NTU1.5600000
3/1/20071.8333.1000000NTU1.6700000
4/1/20071.6532.7400000NTU1.3800000
5/1/20073.4332.8700000NTU2.1900000
6/1/20073.8033.0300000NTU3.2000000
7/1/20074.0332.7500000NTU3.8300000
8/1/20074.7733.2500000NTU4.2600000
9/1/20073.1033.4600000NTU3.0300000
10/1/20072.5333.6100000NTU2.5200000
11/1/20072.8033.5100000NTU2.3900000
12/1/20071.5533.1300000NTU1.4800000
1/1/20082.0032.7900000NTU1.8300000
2/1/20081.9832.3300000NTU1.7900000
3/1/20081.8122.1100000NTU1.7900000
4/1/20081.7131.9800000NTU1.6400000
5/1/20083.0132.0100000NTU2.1600000
6/1/20082.8232.2200000NTU2.1900000
7/1/20081.5622.1500000NTU1.5500000
8/1/20084.8032.6200000NTU4.0400000
9/1/20084.5333.0700000NTU4.2800000
10/1/20084.8333.5900000NTU4.0000000
11/1/20082.1533.4500000NTU1.8100000
12/1/20082.7033.4300000NTU2.5000000
1/1/20093.2133.7000000NTU2.4600000
2/1/20091.8233.2100000NTU1.6100000
3/1/20092.7132.9000000NTU2.3800000
4/1/20093.2532.6400000NTU2.3500000
5/1/20096.5043.3700000NTU5.3000000
6/1/20092.7333.3700000NTU2.2000000
7/1/20091.8733.1500000NTU1.7700000
8/1/20091.9133.1600000NTU1.9000000
9/1/20093.9033.3600000NTU3.7600000
10/1/20092.6233.2600000NTU2.3600000
11/1/20092.1642.5300000NTU1.8900000
12/1/20093.5432.6700000NTU2.6300000
1/1/20107.0793.5300000NTU6.7800000
2/1/20104.7394.0000000NTU4.4600000
3/1/20104.3094.0700000NTU4.2800000
4/1/20102.3094.0200000NTU2.1800000
6/1/20109.1095.5000000NTU7.0500000
7/1/20108.8795.8600000NTU6.6800000
8/1/201012.8067.4700000NTU9.9800000
9/1/20106.80187.9700000NTU6.1900000
10/1/20103.9098.2900000NTU3.6100000
11/1/20102.8697.3900000NTU2.5200000
12/1/20105.0796.7200000NTU4.2300000
1/1/201127.2799.7800000NTU20.7800000
2/1/20113.4398.2200000NTU3.2500000
3/1/20113.2097.6200000NTU2.9000000
4/1/20111.4097.2100000NTU1.3500000
5/1/20111.9697.0600000NTU1.8200000
6/1/20113.7396.8300000NTU3.4100000
7/1/20112.1492.6400000NTU1.7600000
8/1/20114.4392.8100000NTU4.1600000
9/1/20112.0492.6200000NTU1.8600000
10/1/20112.3292.7700000NTU2.2400000
11/1/20116.1493.4700000NTU2.7500000
12/1/20113.2393.3800000NTU2.1300000
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:
  • 1936

Chlorophyll a

Units: mg/l Year
2011
Historical
period of record
High 0.1
Mean 0.0094 0.02305241
Low 0.0005
No. of Samples 0 51

Five-year Trend Graph

     
1/1/20073.3910.0033900mg/l0.0033900
2/1/20072.9610.0031800mg/l0.0029600
3/1/20071.7010.0026800mg/l0.0017000
4/1/20079.4510.0043800mg/l0.0094500
5/1/20077.7510.0050500mg/l0.0077500
6/1/200738.4010.0106100mg/l0.0384000
7/1/20078.3810.0114400mg/l0.0083800
8/1/200716.2010.0136500mg/l0.0162000
10/1/200723.5010.0188500mg/l0.0235000
11/1/200716.1010.0205200mg/l0.0161000
12/1/20078.8410.0146000mg/l0.0088400
1/1/200817.2030.0163700mg/l0.0113400
2/1/20080.6010.0132500mg/l0.0006000
3/1/200815.7330.0136600mg/l0.0128000
4/1/200810.7030.0115300mg/l0.0078200
5/1/20087.3310.0100700mg/l0.0073300
6/1/200851.5020.0171800mg/l0.0415000
7/1/200820.0020.0176400mg/l0.0196000
9/1/200896.0020.0371100mg/l0.0929500
10/1/200854.5020.0458700mg/l0.0539800
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
2011
Historical
period of record
High 7.0
Mean 1.3876 1.73028028
Low 0.054
No. of Samples 0 81

Five-year Trend Graph

     
1/1/2007700.0010.7000000mg/l0.7000000
2/1/2007296.0010.4980000mg/l0.2960000
3/1/2007209.0010.4016700mg/l0.2090000
4/1/200754.0010.3147500mg/l0.0540000
5/1/2007204.0010.2926000mg/l0.2040000
6/1/2007318.0010.2968300mg/l0.3180000
7/1/2007603.0010.2806700mg/l0.6030000
8/1/2007875.0010.3771700mg/l0.8750000
10/1/2007783.0010.5566000mg/l0.7830000
11/1/2007264.0010.5686000mg/l0.2640000
12/1/2007200.0010.5450000mg/l0.2000000
1/1/2008815.6730.5875300mg/l0.7167100
2/1/2008388.0010.4901300mg/l0.3880000
3/1/2008820.3330.5451700mg/l0.7403800
4/1/20081034.6730.5871100mg/l1.0036700
5/1/2008279.0010.5896100mg/l0.2790000
6/1/20081125.5020.7438600mg/l1.1110900
7/1/20081077.5020.7875000mg/l1.0756900
9/1/20081471.0020.9975300mg/l1.4642300
10/1/20081299.0021.0504000mg/l1.2986300

Phosphorus, Total

We were unable to determine a trend for the data available.
Units: mg/l Year
2011
Historical
period of record
High 2.0
Mean 0.371 0.51430974
Low 0.04
No. of Samples 0 98

Five-year Trend Graph

     
1/1/2007123.0010.1230000mg/l0.1230000
2/1/200761.0010.0920000mg/l0.0610000
3/1/2007112.0010.0986700mg/l0.1120000
4/1/200781.0010.0942500mg/l0.0810000
5/1/200776.0010.0906000mg/l0.0760000
6/1/2007104.0010.0928300mg/l0.1040000
7/1/2007214.0010.1080000mg/l0.2140000
8/1/2007184.0010.1285000mg/l0.1840000
10/1/2007271.0010.1698000mg/l0.2710000
11/1/2007106.0010.1758000mg/l0.1060000
12/1/2007105.0010.1760000mg/l0.1050000
1/1/2008120.0030.1572000mg/l0.1126100
2/1/2008189.0010.1582000mg/l0.1890000
3/1/2008235.6730.1711100mg/l0.2339500
4/1/2008172.0030.1546100mg/l0.1655300
5/1/2008131.0010.1587800mg/l0.1310000
6/1/2008305.0020.1921100mg/l0.3000000
7/1/2008370.0020.2337800mg/l0.3612500
9/1/2008290.0020.2536000mg/l0.2900000
10/1/2008375.0020.2942000mg/l0.3722900
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 102.5 381.3
Mean 61.13 63.94 31.23405
Low 37.8532 0.00
No. of Samples 14 451

Five-year Trend Graph

     
1/1/200779.70179.7000000percent (%)79.7000000
2/1/2007149.901114.8000000percent (%)149.9000000
3/1/200757.30195.6300000percent (%)57.3000000
4/1/200772.50189.8500000percent (%)72.5000000
5/1/200725.00176.8800000percent (%)25.0000000
6/1/200755.70173.3500000percent (%)55.7000000
7/1/200738.30166.4500000percent (%)38.3000000
8/1/200746.80149.2700000percent (%)46.8000000
10/1/200779.00148.9600000percent (%)79.0000000
11/1/200740.40152.0400000percent (%)40.4000000
12/1/200766.90154.2800000percent (%)66.9000000
1/1/200862.30359.0800000percent (%)58.1500000
2/1/200828.70155.4600000percent (%)28.7000000
3/1/200834.63351.9900000percent (%)31.0300000
4/1/200862.70349.2700000percent (%)52.8600000
5/1/200872.60154.6400000percent (%)72.6000000
6/1/200861.17453.6800000percent (%)55.1900000
7/1/200880.80256.7700000percent (%)80.3200000
9/1/200879.47671.3500000percent (%)76.6500000
10/1/200850.85268.9800000percent (%)49.0700000
2/1/2009105.59278.6400000percent (%)105.5900000
8/1/200940.79240.7900000percent (%)40.7800000
9/1/200935.10237.9500000percent (%)35.1000000
10/1/200975.12650.3400000percent (%)74.3200000
12/1/2009122.86268.4700000percent (%)122.6600000
2/1/201082.32278.8500000percent (%)82.3100000
3/1/201080.73290.2600000percent (%)80.6900000
4/1/201065.02287.7300000percent (%)64.9700000
5/1/2010127.45295.6800000percent (%)127.4500000
7/1/201034.21277.9500000percent (%)34.1300000
9/1/201073.17674.9600000percent (%)71.7500000
11/1/201094.70267.3600000percent (%)94.6700000
2/1/201139.11268.9900000percent (%)39.0900000
3/1/201162.62265.4800000percent (%)62.5300000
4/1/201153.99262.6100000percent (%)53.9800000
9/1/201164.84659.4200000percent (%)63.6400000
10/1/201194.11279.4800000percent (%)93.7300000
Target
percent (%)
Threshold
56.00 percent (%)

BOD, Biochemical oxygen demand

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

Five-year Trend Graph

     
1/1/20071.2911.2900000mg/l1.2900000
2/1/20071.8711.5800000mg/l1.8700000
3/1/20072.6711.9400000mg/l2.6700000
4/1/20072.7812.1500000mg/l2.7800000
5/1/20072.8412.2900000mg/l2.8400000
6/1/20075.0812.7600000mg/l5.0800000
8/1/20073.7813.4300000mg/l3.7800000
10/1/20071.4113.2800000mg/l1.4100000
11/1/20074.4913.6900000mg/l4.4900000
12/1/20072.3513.0100000mg/l2.3500000
1/1/20082.5132.9100000mg/l2.1200000
2/1/20081.6012.4700000mg/l1.6000000
3/1/20083.9032.7100000mg/l3.4300000
4/1/20083.1433.0000000mg/l2.8100000
5/1/20082.9412.7400000mg/l2.9400000
6/1/20085.9023.3300000mg/l5.7500000
7/1/20082.6023.3500000mg/l2.6000000
9/1/20085.3023.9800000mg/l4.8200000
10/1/20087.1024.7700000mg/l7.0900000

Color

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

Five-year Trend Graph

     

Enterococcus Group Bacteria

Units: cfu/100ml Year
2011
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
2011
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     
1/1/2007153.001153.0000000ug/l153.0000000
2/1/2007103.001128.0000000ug/l103.0000000
3/1/2007139.001131.6700000ug/l139.0000000
4/1/200713.001102.0000000ug/l13.0000000
5/1/2007200.001121.6000000ug/l200.0000000
6/1/2007400.001168.0000000ug/l400.0000000
7/1/2007303.001193.0000000ug/l303.0000000
8/1/2007113.001194.6700000ug/l113.0000000
10/1/2007424.001288.0000000ug/l424.0000000
11/1/200787.001265.4000000ug/l87.0000000
12/1/2007115.001208.4000000ug/l115.0000000
1/1/200882.003164.2000000ug/l81.7400000
2/1/2008361.001213.8000000ug/l361.0000000
3/1/200890.003193.1700000ug/l89.6700000
4/1/200879.333135.7200000ug/l77.7300000
5/1/2008111.001139.7200000ug/l111.0000000
6/1/200812.002122.5600000ug/l11.8300000
7/1/200876.502121.6400000ug/l68.7700000
9/1/200819.50259.6700000ug/l18.9700000
10/1/200850.00253.8000000ug/l50.0000000

Nitrogen, Kjeldahl

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

Five-year Trend Graph

     
1/1/2007618.001618.0000000ug/l618.0000000
2/1/2007222.001420.0000000ug/l222.0000000
3/1/2007205.001348.3300000ug/l205.0000000
4/1/200750.001273.7500000ug/l50.0000000
5/1/2007200.001259.0000000ug/l200.0000000
6/1/2007314.001268.1700000ug/l314.0000000
7/1/2007447.001239.6700000ug/l447.0000000
8/1/2007490.001284.3300000ug/l490.0000000
10/1/2007672.001424.6000000ug/l672.0000000
11/1/2007260.001436.6000000ug/l260.0000000
12/1/2007196.001413.0000000ug/l196.0000000
1/1/2008729.003469.4000000ug/l636.6900000
2/1/2008363.001444.0000000ug/l363.0000000
3/1/2008789.333501.5600000ug/l716.6100000
4/1/2008945.003547.0600000ug/l922.0700000
5/1/2008275.001549.5600000ug/l275.0000000
6/1/20081120.002703.5600000ug/l1105.4400000
7/1/2008960.002742.0600000ug/l959.5300000
9/1/20081400.002940.0000000ug/l1385.6400000
10/1/20081250.0021001.0000000ug/l1249.0000000

Nitrogen, Nitrite + Nitrate as N

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

Five-year Trend Graph

     
1/1/200782.00182.0000000ug/l82.0000000
2/1/200774.00178.0000000ug/l74.0000000
3/1/20074.00153.3300000ug/l4.0000000
4/1/20074.00141.0000000ug/l4.0000000
5/1/20074.00133.6000000ug/l4.0000000
6/1/20074.00128.6700000ug/l4.0000000
7/1/2007156.00141.0000000ug/l156.0000000
8/1/2007385.00192.8300000ug/l385.0000000
10/1/2007111.001132.0000000ug/l111.0000000
11/1/20074.001132.0000000ug/l4.0000000
12/1/20074.001132.0000000ug/l4.0000000
1/1/200886.673118.1300000ug/l77.2700000
2/1/200825.00146.1300000ug/l25.0000000
3/1/200831.00343.6100000ug/l19.9300000
4/1/200889.67340.0600000ug/l74.3700000
5/1/20084.00140.0600000ug/l4.0000000
6/1/20085.50240.3100000ug/l5.4800000
7/1/2008117.50245.4500000ug/l112.9200000
9/1/200871.00257.5300000ug/l39.5000000
10/1/200849.00249.4000000ug/l45.1700000

Oysters

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

Five-year Trend Graph

     

pH

Units: None Year
2011
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     
1/1/20077.32767.3200000None7.3200000
2/1/20077.59827.4600000None7.5800000
3/1/20077.93827.6100000None7.9100000
4/1/20077.309427.5400000None7.2900000
5/1/20077.3417.5000000None7.3400000
6/1/20077.5517.5100000None7.5500000
7/1/20077.5517.5400000None7.5500000
8/1/20077.6717.5600000None7.6700000
10/1/20077.4117.5000000None7.4100000
11/1/20077.1217.4600000None7.1200000
12/1/20077.6617.4800000None7.6600000
1/1/20087.6937.5100000None7.6900000
2/1/20087.5817.4900000None7.5800000
3/1/20087.5837.5100000None7.5800000
4/1/20087.6837.5500000None7.6800000
5/1/20088.0417.7100000None8.0400000
6/1/20087.7837.7300000None7.7700000
7/1/20087.6327.7200000None7.6200000
9/1/20087.6657.7600000None7.6600000
10/1/20087.8327.7900000None7.8300000
2/1/20098.2017.9000000None8.2000000
8/1/20098.1018.1000000None8.1000000
9/1/20098.3018.2000000None8.3000000
10/1/20098.2338.2100000None8.2300000
12/1/20097.9018.1300000None7.9000000
2/1/20108.1018.1300000None8.1000000
3/1/20108.0018.0600000None8.0000000
4/1/20108.0018.0000000None8.0000000
5/1/20107.9017.9800000None7.9000000
7/1/20108.1018.0200000None8.1000000
9/1/20107.9737.9900000None7.9600000
11/1/20107.6017.8900000None7.6000000
2/1/20117.9017.8200000None7.9000000
3/1/20117.7017.7300000None7.7000000
4/1/20117.8017.7500000None7.8000000
9/1/20116.8337.3200000None6.6800000
10/1/20115.2016.0200000None5.2000000

Rainfall

Units: inches Year
2011
Historical
period of record
High 39.9 57.0
Mean 14.0782772975484
Low 8.52
No. of Samples 363 5,445

Five-year Trend Graph

     
1/1/20072.79312.7900000inches2.7900000
2/1/20071.76281.7600000inches1.7600000
3/1/20070.31310.3100000inches0.3100000
4/1/20072.56292.5600000inches2.5600000
5/1/20070.96310.9600000inches0.9600000
6/1/20073.18303.1800000inches3.1800000
7/1/20078.28318.2800000inches8.2800000
8/1/20074.65314.6500000inches4.6500000
9/1/20075.15305.1500000inches5.1500000
10/1/20075.48315.4800000inches5.4800000
11/1/20070.22300.2200000inches0.2200000
12/1/20070.89310.8900000inches0.8900000
1/1/20081.89311.8900000inches1.8900000
2/1/20082.16292.1600000inches2.1600000
3/1/20083.02313.0200000inches3.0200000
4/1/20082.62302.6200000inches2.6200000
5/1/20081.86311.8600000inches1.8600000
6/1/20083.91303.9100000inches3.9100000
7/1/20086.83316.8300000inches6.8300000
8/1/20086.03316.0300000inches6.0300000
9/1/20084.26304.2600000inches4.2600000
10/1/20081.63311.6300000inches1.6300000
11/1/20080.69300.6900000inches0.6900000
12/1/20081.43301.4300000inches1.4300000
1/1/20091.56331.5600000inches1.5600000
2/1/20090.56280.5600000inches0.5600000
3/1/20091.22311.2200000inches1.2200000
4/1/20091.64301.6400000inches1.6400000
5/1/20094.54314.5400000inches4.5400000
6/1/20094.21304.2100000inches4.2100000
7/1/20095.75315.7500000inches5.7500000
8/1/20094.99314.9900000inches4.9900000
9/1/20098.83308.8300000inches8.8300000
10/1/20091.00311.0000000inches1.0000000
11/1/20091.53301.5300000inches1.5300000
12/1/20093.03313.0300000inches3.0300000
1/1/20103.95313.9500000inches3.9500000
2/1/20102.11282.1100000inches2.1100000
3/1/20105.09315.0900000inches5.0900000
4/1/20101.38301.3800000inches1.3800000
5/1/20100.87310.8700000inches0.8700000
6/1/20106.31306.3100000inches6.3100000
7/1/20105.45315.4500000inches5.4500000
8/1/201012.113112.1100000inches12.1100000
9/1/20102.24302.2400000inches2.2400000
10/1/20100.01310.0100000inches0.0100000
11/1/20102.77302.7700000inches2.7700000
12/1/20100.86310.8600000inches0.8600000
1/1/20112.83312.8300000inches2.8300000
2/1/20110.73280.7300000inches0.7300000
3/1/20115.81315.8100000inches5.8100000
4/1/20111.49301.4900000inches1.4900000
5/1/20112.21312.2100000inches2.2100000
6/1/20113.24303.2400000inches3.2400000
7/1/20118.71318.7100000inches8.7100000
8/1/20117.69317.6900000inches7.6900000
9/1/20114.01304.0100000inches4.0100000
10/1/20111.88301.8800000inches1.8800000
11/1/20111.10301.1000000inches1.1000000
12/1/20110.17300.1700000inches0.1700000
Target
inches
Threshold
inches

Salinity

Units: PSS Year
2011
Historical
period of record
High 33.9 45.0
Mean 31.76 5.56 15.43449
Low 27.20 0.00
No. of Samples 14 2,755

Five-year Trend Graph

     
1/1/20071.07761.0700000PSS0.6500000
2/1/20071.19821.1300000PSS0.7800000
3/1/20071.19821.1500000PSS0.7700000
4/1/20070.669421.0300000PSS0.6200000
5/1/200734.8017.7800000PSS34.8000000
6/1/200736.52112.5700000PSS36.5200000
7/1/200734.75118.1900000PSS34.7500000
8/1/200735.75123.9500000PSS35.7500000
10/1/200735.53135.4700000PSS35.5300000
11/1/200735.68135.6500000PSS35.6800000
12/1/200736.56135.6500000PSS36.5600000
1/1/200829.64334.6300000PSS29.3200000
2/1/200835.46134.5700000PSS35.4600000
3/1/200834.53334.5700000PSS34.5000000
4/1/200833.72334.2700000PSS33.6600000
5/1/200836.95134.4800000PSS36.9500000
6/1/200834.79434.1800000PSS34.7400000
7/1/200822.15232.9300000PSS19.2000000
9/1/200824.24630.3700000PSS19.8200000
10/1/200834.90230.6100000PSS34.8900000
2/1/200936.80231.9800000PSS36.8000000
8/1/200937.55237.5500000PSS37.5500000
9/1/200937.30237.4300000PSS37.3000000
10/1/200935.88636.9100000PSS35.8500000
12/1/200926.65234.3500000PSS26.1900000
2/1/201030.70232.6300000PSS30.7000000
3/1/201030.50230.9300000PSS30.5000000
4/1/201030.40229.5600000PSS30.4000000
5/1/201035.95230.8400000PSS35.9500000
7/1/201032.00231.9100000PSS32.0000000
9/1/201032.52632.7200000PSS32.4300000
11/1/201037.25233.9200000PSS37.2500000
2/1/201130.80233.5200000PSS30.8000000
3/1/201132.40233.4800000PSS32.4000000
4/1/201131.10232.8900000PSS31.1000000
9/1/201131.47631.2900000PSS31.4000000
10/1/201133.90232.6900000PSS33.9000000

Specific conductance

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

Five-year Trend Graph

     
1/1/20071549.18761549.1800000umho914.2000000
2/1/20071737.14821643.1600000umho1104.4800000
3/1/20071720.20821668.8400000umho1090.5500000
4/1/2007931.349421484.4700000umho879.6400000
5/1/200752830.00111753.5700000umho52830.0000000
6/1/200755260.00119004.6400000umho55260.0000000
7/1/200752960.00127573.1100000umho52960.0000000
8/1/200754330.00136338.5900000umho54330.0000000
10/1/200753840.00153844.0000000umho53840.0000000
11/1/200753925.00154063.0000000umho53925.0000000
12/1/200755057.00154022.4000000umho55057.0000000
1/1/200845520.33352534.4700000umho45117.3100000
2/1/200853563.00152381.0700000umho53563.0000000
3/1/200852356.33352376.9400000umho52316.7700000
4/1/200851315.00351956.1100000umho51249.4000000
5/1/200855760.00152261.9400000umho55760.0000000
6/1/200850483.50251499.6900000umho50481.6900000
7/1/200831463.50249156.8900000umho24720.9200000
9/1/200826892.00443182.8000000umho23257.3100000
10/1/200852979.50243515.7000000umho52976.8800000

Temperature, water

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

Five-year Trend Graph

     
1/1/200775.657675.6500000deg F75.6300000
2/1/200775.258275.4500000deg F75.2200000
3/1/200776.118275.6700000deg F76.0900000
4/1/200773.4394275.1100000deg F73.3700000
5/1/200776.24175.3400000deg F76.2400000
6/1/200784.04176.7900000deg F84.0400000
8/1/200788.20179.6000000deg F88.2000000
10/1/200779.77182.0600000deg F79.7700000
11/1/200773.83181.4600000deg F73.8300000
12/1/200767.53177.3300000deg F67.5300000
1/1/200866.94375.2500000deg F66.9200000
2/1/200870.21171.6600000deg F70.2100000
3/1/200872.59371.8100000deg F72.5900000
4/1/200876.93371.3400000deg F76.9300000
5/1/200880.82172.5000000deg F80.8200000
6/1/200886.44475.6600000deg F86.4300000
7/1/200887.28279.0500000deg F87.2300000
9/1/200884.43683.1800000deg F84.4100000
10/1/200894.83286.7600000deg F94.8300000
2/1/200962.33280.5300000deg F62.3300000
8/1/200988.70288.7000000deg F88.7000000
9/1/200986.63287.6700000deg F86.6300000
10/1/200982.82686.0500000deg F82.7900000
12/1/200969.89282.0100000deg F69.8900000
2/1/201054.95273.5700000deg F54.9500000
3/1/201057.65266.3300000deg F57.6500000
4/1/201075.20264.4200000deg F75.2000000
5/1/201081.95267.9300000deg F81.9500000
7/1/201086.99271.3500000deg F86.9900000
9/1/201086.03682.5400000deg F86.0100000
11/1/201080.87284.6300000deg F80.8700000
2/1/201161.43276.1100000deg F61.4300000
3/1/201171.96271.4200000deg F71.9600000
4/1/201179.52273.4500000deg F79.5200000
9/1/201185.58682.5500000deg F85.5700000
10/1/201181.50283.5400000deg F81.5000000

Turbidity

Units: NTU Year
2011
Historical
period of record
High 4.6 31.3
Mean 2.68 3.53 3.52743
Low 2.00 0.62
No. of Samples 7 407

Five-year Trend Graph

     
1/1/20073.5013.5000000NTU3.5000000
2/1/20071.6012.5500000NTU1.6000000
3/1/20071.5122.2000000NTU1.5100000
4/1/20073.5012.5300000NTU3.5000000
5/1/20073.6012.7400000NTU3.6000000
6/1/20074.5013.0400000NTU4.5000000
7/1/20073.5013.0400000NTU3.5000000
8/1/20072.7023.2200000NTU2.6500000
10/1/20075.1013.8800000NTU5.1000000
11/1/20075.6014.2800000NTU5.6000000
12/1/20072.7013.9200000NTU2.7000000
1/1/20083.8033.9800000NTU3.4200000
2/1/20084.9014.4200000NTU4.9000000
3/1/20083.4334.2600000NTU3.3700000
4/1/20084.2334.1100000NTU3.8200000
5/1/20082.5013.5900000NTU2.5000000
6/1/20087.1034.3300000NTU5.1100000
7/1/20083.6524.3000000NTU3.6500000
9/1/20084.2734.3500000NTU4.0400000
10/1/20084.6524.4300000NTU4.6500000
2/1/20092.8013.9100000NTU2.8000000
8/1/20092.2012.2000000NTU2.2000000
9/1/20092.9012.5500000NTU2.9000000
10/1/20092.3332.4800000NTU2.3000000
12/1/20092.8012.5600000NTU2.8000000
2/1/20103.6012.9100000NTU3.6000000
3/1/20102.4012.7800000NTU2.4000000
4/1/20105.1013.4800000NTU5.1000000
5/1/20102.9013.3600000NTU2.9000000
7/1/20102.6013.3200000NTU2.6000000
9/1/20103.9733.6400000NTU3.8600000
11/1/20104.4313.6700000NTU4.4300000
2/1/20112.1013.5000000NTU2.1000000
3/1/20112.4012.9800000NTU2.4000000
4/1/20113.6013.1300000NTU3.6000000
9/1/20112.3032.9500000NTU2.2900000
10/1/20114.6013.4500000NTU4.6000000
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...

Impervious Features

Whitaker Bayou is located within the Sarasota Bay Watershed. View details about the 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 Whitaker Bayou Basin is covered by impervious surfaces.

Loading interactive chart...

Land Use / Land Cover

Whitaker Bayou is located within the Sarasota Bay Watershed. View details about the 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.