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Forked Creek Condition Report for 2015

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Caution

3 out of 4 indicators were rated as PASS.

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

Learn more about how this report is created

  • Size: 5,863 acres
  • Location: South Sarasota County
  • Discharges into: Lemon Bay

Historically, the Forked Creek Basin consisted of a series of contiguous wetlands and mesic hammocks that extended from the creek’s headwaters to its outfall. The entirety of Forked Creek is predominantly marine. There are three branches within this basin: the eastern, main branch which extends from State Road 776 north and east to the headwaters; the central branch which extends from the main confluence at SR776 north into the Dale Lakes area; and the western branch which extends north of Overbrook Road to Manasota Beach Road. The eastern branch traverses mainly undeveloped range land and sparsely populated land, while the central branch traverses through two urban subdivisions and one sparsely populated section. The flow characteristics of the creek have been greatly diminished because of the invasion of a variety of exotics, debris and storm-damaged trees. Sarasota County has designated the Forked Creek basin as a regional stormwater facility requiring immediate attention. For basin details see: Forked Creek Drainage Improvements, Preliminary Report Phase I (2000)

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 »

Water quality data are not available for the freshwater portion of this creek.

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:
  • 2039
Pass

Chlorophyll a

Score: Pass
Units: mg/l Year
2015
Historical
period of record
High 0.0 0.2
Mean 0.0068 0.0145 0.0326201
Low 0.0003 0.0003
No. of Samples 24 427

Five-year Trend Graph

     
1/1/201126.9870.0269800mg/l0.0110400
2/1/201113.5870.0202800mg/l0.0122700
3/1/20119.0870.0165500mg/l0.0086600
4/1/201115.0570.0161700mg/l0.0140600
5/1/201118.6970.0166800mg/l0.0171600
6/1/201112.3060.0159500mg/l0.0110000
7/1/201142.9570.0186100mg/l0.0260500
8/1/201130.0470.0213500mg/l0.0202900
9/1/201113.9470.0221600mg/l0.0107600
10/1/201157.8470.0292900mg/l0.0514500
11/1/201129.9670.0311700mg/l0.0253400
12/1/201124.3370.0331800mg/l0.0179400
1/1/201236.1060.0320400mg/l0.0245000
2/1/201239.1260.0335500mg/l0.0219500
3/1/201259.6560.0411700mg/l0.0349300
4/1/201276.9560.0443500mg/l0.0575800
5/1/201220.7030.0428100mg/l0.0207000
6/1/201217.2030.0416200mg/l0.0172000
7/1/20129.9720.0372700mg/l0.0099700
8/1/2012154.0030.0564100mg/l0.1540000
9/1/201223.8540.0504500mg/l0.0225300
10/1/201241.8340.0445900mg/l0.0369700
11/1/20127.7040.0424300mg/l0.0075000
12/1/20122.0130.0398900mg/l0.0020100
1/1/201310.1240.0399200mg/l0.0093300
2/1/20134.6940.0150300mg/l0.0037200
3/1/20136.1840.0120900mg/l0.0020200
4/1/20139.3240.0066700mg/l0.0092100
5/1/201313.7340.0076800mg/l0.0134000
6/1/20138.7040.0087900mg/l0.0086600
7/1/20138.9040.0085900mg/l0.0083000
8/1/20139.0640.0093200mg/l0.0090500
9/1/201312.7540.0104100mg/l0.0116300
10/1/20139.7840.0104900mg/l0.0087000
11/1/201372.3330.0202500mg/l0.0325900
12/1/20135.3040.0196900mg/l0.0052900
1/1/20143.1450.0187300mg/l0.0015500
2/1/20145.8550.0181900mg/l0.0056900
3/1/20148.3950.0174700mg/l0.0062800
4/1/20149.0940.0173500mg/l0.0090600
5/1/201410.0440.0069700mg/l0.0088300
6/1/201418.0850.0091000mg/l0.0178700
7/1/201414.4040.0109800mg/l0.0144000
8/1/201445.5650.0175900mg/l0.0404400
9/1/201411.9050.0181800mg/l0.0116900
10/1/20146.5050.0177500mg/l0.0060700
11/1/20142.6750.0165200mg/l0.0020500
12/1/201410.0050.0151700mg/l0.0098800
1/1/20157.8340.0140800mg/l0.0047000
2/1/20151.1640.0066800mg/l0.0005000
3/1/20153.1940.0052300mg/l0.0027900
4/1/201517.2030.0070100mg/l0.0172000
5/1/201541.1840.0134300mg/l0.0389800
6/1/201513.5040.0140100mg/l0.0134700
7/1/20158.0630.0140500mg/l0.0068100
8/1/201517.8330.0168300mg/l0.0131900
9/1/20158.3730.0176900mg/l0.0082500
10/1/201562.1520.0251800mg/l0.0272700
11/1/20154.6020.0190900mg/l0.0043400
12/1/20151.4010.0170700mg/l0.0014000
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
2015
Historical
period of record
High 1.9 8.1
Mean 0.9703 1.031 0.82225091
Low 0.671 0.00
No. of Samples 16 408

Five-year Trend Graph

     
1/1/20111626.6731.6266700mg/l1.5758900
2/1/20111265.6731.4461700mg/l1.0125400
3/1/20111126.3331.3395600mg/l1.0169500
4/1/20111138.3331.2892500mg/l1.0779500
5/1/20111234.6731.2783300mg/l1.1847900
6/1/20111404.0021.2992800mg/l1.2582100
7/1/20111291.0031.2433300mg/l1.2005200
8/1/20111046.6731.2068300mg/l0.9428600
9/1/20111122.3331.2061700mg/l1.0739500
10/1/20111279.6731.2297200mg/l1.2310300
11/1/2011911.6731.1758900mg/l0.8439300
12/1/20111009.0031.1100600mg/l0.9544800
1/1/20121286.0021.1092200mg/l1.1634000
2/1/20121541.5021.1917000mg/l1.3508900
3/1/20121663.0021.2818100mg/l1.3406400
4/1/20121716.5021.3546100mg/l1.5728100
5/1/2012791.0011.3345000mg/l0.7910000
6/1/2012717.0011.2858300mg/l0.7170000
8/1/20121495.0011.2765000mg/l1.4950000
9/1/2012859.0021.1157000mg/l0.8526800
10/1/20121417.5021.0559000mg/l1.4174900
11/1/2012746.5021.0470000mg/l0.7452900
12/1/2012698.0011.0432000mg/l0.6980000
1/1/2013905.0021.0201700mg/l0.9015500
2/1/20131046.0020.9453300mg/l1.0083800
3/1/20131148.5020.9935800mg/l1.0836400
4/1/2013904.0020.9080000mg/l0.9039100
5/1/2013959.5020.9435000mg/l0.9361200
6/1/2013961.0020.9873300mg/l0.9571400
7/1/2013702.5020.9535800mg/l0.1345200
8/1/20131538.0021.0355800mg/l1.5324100
9/1/20131286.0021.0585000mg/l1.2849500
10/1/20131084.5021.0885800mg/l1.0760000
11/1/20131306.0011.1463300mg/l1.3060000
12/1/20131215.5021.1887500mg/l1.1705500
1/1/20141126.0031.2593300mg/l1.0704100
2/1/2014788.6731.1344500mg/l0.7301200
3/1/2014602.3331.0205000mg/l0.5803800
4/1/2014819.0020.9762500mg/l0.8166500
5/1/20141352.5020.9840000mg/l1.3220200
6/1/2014794.5020.9138300mg/l0.7666500
7/1/2014657.0010.8356700mg/l0.6570000
8/1/20141025.0020.8750600mg/l0.9837100
9/1/2014953.0020.9335000mg/l0.9493800
10/1/20141242.6731.0041100mg/l1.2411000
11/1/2014980.0030.9420300mg/l0.9795600
12/1/2014808.6730.9443900mg/l0.7934100
1/1/2015690.5020.9499700mg/l0.6902200
2/1/2015763.5020.9063900mg/l0.7633000
3/1/20151076.5020.9269700mg/l1.0633900
4/1/2015885.0010.8673600mg/l0.8850000
5/1/20151408.0020.9387000mg/l1.3147000
6/1/2015841.5020.9441700mg/l0.8358300
7/1/2015934.0010.9847500mg/l0.9340000
8/1/20151429.0011.0956700mg/l1.4290000
9/1/20151147.0011.1074200mg/l1.1470000
10/1/20151264.0011.1705800mg/l1.2640000
11/1/2015951.0011.0944200mg/l0.9510000
12/1/2015944.0011.1115000mg/l0.9440000

Phosphorus, Total

We were unable to determine a trend for the data available.
Units: mg/l Year
2015
Historical
period of record
High 0.4 3.8
Mean 0.2452 0.3794 0.55647497
Low 0.108 0.03
No. of Samples 25 508

Five-year Trend Graph

     
1/1/20111774.2971.7742900mg/l0.9739200
2/1/20111121.4371.4478600mg/l0.6796200
3/1/2011890.7171.2621400mg/l0.5780600
4/1/2011891.7171.1695400mg/l0.6632800
5/1/20111092.8671.1542000mg/l0.7208200
6/1/2011899.5061.1117500mg/l0.6106100
7/1/2011797.1470.9488900mg/l0.5532800
8/1/2011726.8670.8831300mg/l0.4716700
9/1/2011841.4370.8749200mg/l0.5279700
10/1/2011907.2970.8775100mg/l0.6435800
11/1/2011746.1470.8197300mg/l0.4859700
12/1/2011802.2970.8035300mg/l0.5319600
1/1/2012985.0060.8348400mg/l0.7266400
2/1/20121029.0060.8851900mg/l0.7801300
3/1/2012873.5060.8905400mg/l0.6648900
4/1/2012583.5060.8365700mg/l0.5279400
5/1/2012277.0030.7583800mg/l0.2770000
6/1/2012191.0030.6565000mg/l0.1910000
7/1/2012366.0020.5533300mg/l0.3660000
8/1/2012316.0030.4345000mg/l0.3160000
9/1/2012167.0040.3167500mg/l0.1599200
10/1/2012284.5040.2669200mg/l0.2817700
11/1/2012212.2540.2561300mg/l0.2113700
12/1/2012233.0030.2631300mg/l0.2330000
1/1/2013322.0040.2557900mg/l0.3210300
2/1/2013334.0040.2587900mg/l0.3337000
3/1/2013459.7540.3075800mg/l0.4591500
4/1/2013216.5040.2962500mg/l0.2162800
5/1/2013173.5040.2897900mg/l0.1647000
6/1/2013332.2540.3063300mg/l0.3301200
7/1/2013279.2540.2992100mg/l0.2718400
8/1/2013280.7540.2903300mg/l0.2801600
9/1/2013275.2540.2595800mg/l0.2686400
10/1/2013318.2540.2765400mg/l0.3174400
11/1/2013376.0030.3102900mg/l0.3758700
12/1/2013662.2540.3652900mg/l0.6057500
1/1/2014246.4050.3598200mg/l0.2437900
2/1/2014332.8050.3684900mg/l0.3323700
3/1/2014271.6050.3678800mg/l0.2713800
4/1/2014239.0040.3546800mg/l0.2349800
5/1/2014300.2540.3420500mg/l0.3000200
6/1/2014257.2050.2745400mg/l0.2559700
7/1/2014278.0040.2798100mg/l0.2780000
8/1/2014415.6050.2936100mg/l0.4099500
9/1/2014290.8050.2968100mg/l0.2900300
10/1/2014320.4050.3103800mg/l0.3182200
11/1/2014301.2050.3105300mg/l0.3000100
12/1/2014460.8050.3444700mg/l0.4335100
1/1/2015274.2540.3438400mg/l0.2704000
2/1/2015310.0040.3262400mg/l0.3094900
3/1/2015401.5040.3446900mg/l0.3998100
4/1/2015259.3330.3345100mg/l0.2589600
5/1/2015343.5040.3415600mg/l0.3059700
6/1/2015210.7540.2998900mg/l0.2101100
7/1/2015176.0030.2835100mg/l0.1707300
8/1/2015152.0030.2571800mg/l0.1409400
9/1/2015156.0030.2162600mg/l0.1542600
10/1/2015245.0020.2138800mg/l0.2424900
11/1/2015251.0020.1984600mg/l0.2502800
12/1/2015180.0010.1933300mg/l0.1800000
Target
mg/l
Threshold
mg/l
Caution

Dissolved Oxygen Saturation

Note: Low DO saturation also may be naturally influenced by inflows from nearby wetlands or groundwater sources
Score: Caution
Units: percent (%) Year
2015
Historical
period of record
High 75.6 154.1
Mean 40.63 57.63 24.98179
Low 22.30 7.40
No. of Samples 8 466

Five-year Trend Graph

     
1/1/201191.00691.0000000percent (%)89.6700000
2/1/201174.25682.6300000percent (%)62.1300000
3/1/20117.90357.7200000percent (%)7.9000000
4/1/201160.90658.5100000percent (%)59.3600000
5/1/201175.95662.0000000percent (%)73.7700000
12/1/201140.95640.9500000percent (%)36.0400000
1/1/201285.35663.1500000percent (%)84.5600000
2/1/2012100.25675.5200000percent (%)100.2300000
3/1/2012114.05685.1500000percent (%)114.0500000
4/1/201291.35686.3900000percent (%)87.2800000
5/1/201275.30384.5400000percent (%)75.3000000
6/1/201251.80386.3500000percent (%)51.8000000
8/1/201234.50373.4000000percent (%)34.5000000
9/1/201227.10356.0100000percent (%)27.1000000
10/1/201217.20341.1800000percent (%)17.2000000
11/1/201242.10334.5400000percent (%)42.1000000
12/1/201233.40330.8600000percent (%)33.4000000
1/1/201340.80332.5200000percent (%)40.8000000
2/1/201342.70333.8800000percent (%)42.7000000
3/1/201338.40335.7700000percent (%)38.4000000
4/1/2013103.90350.2200000percent (%)103.9000000
5/1/201372.70355.3200000percent (%)72.7000000
6/1/201391.20364.9500000percent (%)91.2000000
7/1/201378.60371.2500000percent (%)78.6000000
8/1/201375.90376.7800000percent (%)75.9000000
9/1/201333.90376.0300000percent (%)33.9000000
10/1/201326.90363.2000000percent (%)26.9000000
12/1/201354.00353.8600000percent (%)54.0000000
1/1/201464.80451.1000000percent (%)64.8000000
2/1/201480.30351.9800000percent (%)80.3000000
3/1/201451.10155.4200000percent (%)51.1000000
4/1/201473.55464.7500000percent (%)72.7900000
5/1/201452.60462.7300000percent (%)52.6000000
6/1/201486.20468.0900000percent (%)86.2000000
7/1/201463.80467.9300000percent (%)63.8000000
8/1/201468.50465.9600000percent (%)68.5000000
9/1/20148.70458.8900000percent (%)8.7000000
10/1/201427.90451.2800000percent (%)27.9000000
11/1/201466.70453.6300000percent (%)66.7000000
12/1/201484.90453.4200000percent (%)84.9000000
1/1/201543.70350.0700000percent (%)43.7000000
2/1/201537.00344.8200000percent (%)37.0000000
3/1/201522.30347.0800000percent (%)22.3000000
5/1/201575.60352.7000000percent (%)75.6000000
7/1/201513.40137.0800000percent (%)13.4000000
8/1/201541.60138.2300000percent (%)41.6000000
9/1/201576.00151.6500000percent (%)76.0000000
10/1/201549.50151.2200000percent (%)49.5000000
11/1/201572.60150.6200000percent (%)72.6000000
Target
percent (%)
Threshold
56.00 percent (%)

Oysters

Units: Year
2015
Historical
period of record
High
Mean
Low
No. of Samples

Five-year Trend Graph

     
1/1/200775.63275.6300000%75.6300000
1/1/200876.25276.2500000%76.2500000
1/1/200967.84267.8400000%67.8400000
1/1/201071.98271.9800000%71.9800000
1/1/201185.01285.0100000%85.0100000
1/1/201365.76365.7600000%65.7600000
1/1/201485.16285.1600000%85.1600000
1/1/201584.08284.0800000%84.0800000

Rainfall

Units: inches Year
2015
Historical
period of record
High 38.1 67.0
Mean 17.7555610852079
Low 2.29
No. of Samples 362 4,363

Five-year Trend Graph

     
1/1/20112.37312.3700000inches2.3700000
2/1/20110.36280.3600000inches0.3600000
3/1/20115.71315.7100000inches5.7100000
4/1/20110.80300.8000000inches0.8000000
5/1/20112.74302.7400000inches2.7400000
6/1/20112.53302.5300000inches2.5300000
7/1/20117.77317.7700000inches7.7700000
8/1/20113.77293.7700000inches3.7700000
9/1/20111.64221.6400000inches1.6400000
10/1/20112.05302.0500000inches2.0500000
11/1/20111.77301.7700000inches1.7700000
12/1/20110.08290.0800000inches0.0800000
1/1/20120.29290.2900000inches0.2900000
2/1/20121.56291.5600000inches1.5600000
3/1/20120.31310.3100000inches0.3100000
4/1/20122.12242.1200000inches2.1200000
5/1/20121.00311.0000000inches1.0000000
6/1/20127.92307.9200000inches7.9200000
7/1/20123.22313.2200000inches3.2200000
8/1/20125.51315.5100000inches5.5100000
9/1/20124.05304.0500000inches4.0500000
10/1/20121.23301.2300000inches1.2300000
11/1/20120.02260.0200000inches0.0200000
12/1/20121.72311.7200000inches1.7200000
1/1/20130.08250.0800000inches0.0800000
2/1/20130.79120.7900000inches0.7900000
3/1/20132.01242.0100000inches2.0100000
4/1/20135.92295.9200000inches5.9200000
5/1/20135.16315.1600000inches5.1600000
6/1/20137.26307.2600000inches7.2600000
7/1/201310.253110.2500000inches10.2500000
8/1/20137.83317.8300000inches7.8300000
9/1/20138.76298.7600000inches8.7600000
10/1/20130.58310.5800000inches0.5800000
11/1/20130.39300.3900000inches0.3900000
12/1/20130.30310.3000000inches0.3000000
1/1/20141.64311.6400000inches1.6400000
2/1/20141.29281.2900000inches1.2900000
3/1/20143.54313.5400000inches3.5400000
4/1/20141.58291.5800000inches1.5800000
5/1/20143.66313.6600000inches3.6600000
6/1/20143.87303.8700000inches3.8700000
7/1/20141.24301.2400000inches1.2400000
8/1/20145.77285.7700000inches5.7700000
9/1/20148.71258.7100000inches8.7100000
10/1/20142.12292.1200000inches2.1200000
11/1/20143.41303.4100000inches3.4100000
12/1/20140.04310.0400000inches0.0400000
1/1/20151.65311.6500000inches1.6500000
2/1/20152.96282.9600000inches2.9600000
3/1/20150.85310.8500000inches0.8500000
4/1/20150.83300.8300000inches0.8300000
5/1/20155.79315.7900000inches5.7900000
6/1/20153.34303.3400000inches3.3400000
7/1/20156.68316.6800000inches6.6800000
8/1/20154.93284.9300000inches4.9300000
9/1/20156.34306.3400000inches6.3400000
10/1/20153.30313.3000000inches3.3000000
11/1/20150.36300.3600000inches0.3600000
12/1/20151.04311.0400000inches1.0400000
Target
inches
Threshold
inches

Salinity

Units: PSS Year
2015
Historical
period of record
High 30.8 38.1
Mean 17.77 18.51 10.07142
Low 3.10 0.00
No. of Samples 20 909

Five-year Trend Graph

     
1/1/201117.16717.1600000PSS8.5900000
2/1/201120.09918.6300000PSS11.3600000
3/1/201116.74618.0000000PSS7.3900000
4/1/201116.95717.7400000PSS8.4800000
5/1/201119.09718.0100000PSS9.1900000
7/1/201126.50519.8700000PSS25.8800000
8/1/201122.70120.4000000PSS22.7000000
9/1/201128.64722.7800000PSS28.5500000
10/1/201123.90124.1700000PSS23.9000000
11/1/201130.30526.4100000PSS30.2800000
12/1/201112.71724.1300000PSS5.5100000
1/1/201216.02622.3800000PSS6.2700000
2/1/201216.52621.3500000PSS6.3300000
3/1/201222.12820.2600000PSS9.8500000
4/1/201222.42820.0200000PSS9.9300000
5/1/201236.45321.0400000PSS36.4500000
6/1/201233.61324.5200000PSS33.6100000
7/1/201231.23427.0600000PSS31.2200000
8/1/201215.72326.9300000PSS15.7200000
9/1/201225.46427.4800000PSS24.9500000
10/1/201214.66426.1900000PSS14.5900000
11/1/201229.06824.9600000PSS28.8600000
12/1/201226.68323.8000000PSS26.6800000
1/1/201324.28422.6400000PSS24.1900000
2/1/201324.57424.1200000PSS24.3900000
3/1/201331.26625.0900000PSS31.0700000
4/1/201324.90426.7900000PSS24.7500000
5/1/201323.61425.8800000PSS21.3900000
6/1/201321.84425.0800000PSS20.9300000
7/1/20132.78421.4900000PSS2.7000000
8/1/201312.70419.5200000PSS11.3400000
9/1/20131.58414.5700000PSS1.2800000
10/1/20138.92411.9100000PSS8.2800000
11/1/201323.30111.8500000PSS23.3000000
12/1/201320.24411.5900000PSS20.1300000
1/1/201422.68514.9000000PSS22.5800000
2/1/201424.20416.8200000PSS24.1900000
3/1/201426.20220.9200000PSS26.1800000
4/1/201423.77523.4000000PSS23.7600000
5/1/201423.45523.4200000PSS22.1700000
6/1/201425.82524.3500000PSS25.7800000
7/1/201427.25525.1200000PSS27.2500000
8/1/201421.12524.6000000PSS20.0800000
9/1/201423.28524.1200000PSS21.7600000
10/1/20149.48521.7300000PSS9.4400000
11/1/201424.94521.9800000PSS24.9300000
12/1/201426.31522.0600000PSS25.6800000
1/1/201522.09421.2000000PSS22.0900000
2/1/201521.08421.2000000PSS20.5300000
3/1/201523.85421.2900000PSS23.0500000
4/1/201524.80123.8500000PSS24.8000000
5/1/201530.45424.7600000PSS30.4400000
6/1/201525.20124.5800000PSS25.2000000
7/1/201523.20224.7600000PSS21.9800000
8/1/201513.05223.4300000PSS9.2100000
9/1/20154.03220.1200000PSS3.7400000
10/1/201513.25218.2000000PSS8.5200000
11/1/201518.80216.2600000PSS17.5200000
12/1/201527.80116.6900000PSS27.8000000

Turbidity

Units: NTU Year
2015
Historical
period of record
High 7.7 78.9
Mean 2.66 3.11 6.36664
Low 1.20 0.34
No. of Samples 24 927

Five-year Trend Graph

     
1/1/201130.94730.9400000NTU9.7400000
2/1/20113.44817.1900000NTU3.2700000
3/1/20114.11812.8300000NTU3.8300000
4/1/20115.54711.0100000NTU5.2600000
5/1/20115.5479.9100000NTU5.2600000
6/1/20117.8069.5600000NTU6.7500000
7/1/20115.7695.3700000NTU3.9800000
8/1/20114.8175.5900000NTU4.5700000
9/1/20113.45105.4800000NTU2.6900000
10/1/201110.4976.3100000NTU7.7700000
11/1/20113.6095.9900000NTU3.1400000
12/1/20113.1475.2100000NTU2.7700000
1/1/20125.1065.1000000NTU3.7100000
2/1/20128.9065.7800000NTU7.9000000
3/1/201216.0987.8900000NTU9.2800000
4/1/20127.3977.3700000NTU6.6600000
5/1/20124.4037.5000000NTU4.4000000
6/1/20126.4038.0500000NTU6.4000000
7/1/20122.6027.6300000NTU2.6000000
8/1/20123.4036.7100000NTU3.4000000
9/1/20123.3844.6000000NTU3.3700000
10/1/20126.5844.4600000NTU5.8600000
11/1/20121.8544.0400000NTU1.8300000
12/1/20121.0033.1400000NTU1.0000000
1/1/20137.2843.9200000NTU7.2600000
2/1/20134.4544.0900000NTU4.2100000
3/1/20133.4544.1000000NTU2.4600000
4/1/20133.8043.6400000NTU3.7600000
5/1/20133.8343.9700000NTU3.7900000
6/1/20132.1544.1600000NTU2.1400000
7/1/20131.9543.2700000NTU1.9300000
8/1/20133.2343.0700000NTU3.0900000
9/1/20133.6543.1000000NTU3.4100000
10/1/20132.4542.8800000NTU2.4100000
11/1/20134.6333.0100000NTU3.7400000
12/1/20132.9343.1400000NTU2.8800000
1/1/20141.7853.1100000NTU1.7500000
2/1/20142.7253.0300000NTU2.6600000
3/1/20143.2452.9600000NTU3.2100000
4/1/20143.3343.1100000NTU3.3200000
5/1/20143.3342.8900000NTU3.3200000
6/1/20143.8053.0300000NTU3.7800000
7/1/20147.3043.9500000NTU7.3000000
8/1/20144.0654.1800000NTU4.0500000
9/1/20143.2454.1800000NTU3.1300000
10/1/20141.6453.9000000NTU1.6400000
11/1/20141.6653.6200000NTU1.2800000
12/1/20142.2653.3600000NTU2.2600000
1/1/20152.4842.5600000NTU2.4300000
2/1/20151.3842.1100000NTU1.3500000
3/1/20153.1342.0900000NTU2.3700000
4/1/20154.6032.5900000NTU4.5800000
5/1/20154.3843.0400000NTU4.3700000
6/1/20153.2343.2000000NTU3.2200000
7/1/20153.6333.3900000NTU2.8700000
8/1/20152.2333.5300000NTU2.1600000
9/1/20151.8333.3200000NTU1.8300000
10/1/20152.2022.9200000NTU2.1600000
11/1/20152.0022.5200000NTU1.9900000
12/1/20153.4012.5500000NTU3.4000000
Other Measures of Creek Health

Oysters

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

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Most Recent Sarasota County Oyster Monitoring Program Data
Icon Site ID Year Dead Live Total % Live
1 FRK1 2015 43 192 235 81
2 FRK1A 2013 96 76 172 44
3 FRK2 2015 56 331 387 85

Impervious Features

Forked Creek is located within the Lemon Bay Watershed. View details about the Lemon 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 Forked Creek Basin is covered by impervious surfaces.

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Land Use / Land Cover

Forked Creek is located within the Lemon Bay Watershed. View details about the Lemon Bay Watershed »

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

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Data Sources

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