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Forked Creek Condition Report for 2011

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Caution

2 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
Caution

Chlorophyll a

Score: Caution
Units: mg/l Year
2011
Historical
period of record
High 0.1 0.2
Mean 0.0177 0.0164 0.0309327
Low 0.0017 0.0008
No. of Samples 57 386

Five-year Trend Graph

     
1/1/20077.4850.0074800mg/l0.0063900
2/1/200717.32100.0124000mg/l0.0081900
3/1/200721.6590.0154800mg/l0.0140600
4/1/200711.2650.0144300mg/l0.0103700
5/1/200723.3090.0162000mg/l0.0138500
6/1/200719.5650.0167600mg/l0.0175500
7/1/200745.3190.0230700mg/l0.0333500
8/1/200730.9050.0253300mg/l0.0205200
9/1/200734.8390.0275300mg/l0.0285200
10/1/200727.9850.0303100mg/l0.0219900
11/1/200729.5190.0313500mg/l0.0256900
12/1/200721.9860.0317500mg/l0.0216900
1/1/200828.8360.0290100mg/l0.0233200
2/1/200815.5960.0264500mg/l0.0110900
3/1/200818.2640.0236900mg/l0.0149200
4/1/200812.3950.0210900mg/l0.0117700
5/1/200815.4540.0187500mg/l0.0143900
6/1/200817.9030.0180700mg/l0.0167300
7/1/200840.2030.0199700mg/l0.0340500
8/1/200830.8840.0225100mg/l0.0298500
9/1/200825.7250.0237600mg/l0.0208800
10/1/200833.4050.0272600mg/l0.0245300
11/1/200824.8050.0288200mg/l0.0171200
12/1/200826.0730.0301800mg/l0.0259200
1/1/200911.7050.0254300mg/l0.0077600
2/1/200919.5840.0235500mg/l0.0122600
3/1/200927.7560.0238800mg/l0.0203200
4/1/200915.0750.0208300mg/l0.0128100
5/1/200962.8730.0271700mg/l0.0254800
6/1/200978.8730.0359700mg/l0.0478300
7/1/200986.2650.0484000mg/l0.0380800
8/1/200946.1850.0528300mg/l0.0186400
9/1/200960.0040.0582100mg/l0.0280000
10/1/200942.2050.0627300mg/l0.0323800
11/1/200930.0150.0572500mg/l0.0251000
12/1/200918.9650.0472700mg/l0.0076100
1/1/201031.8650.0382000mg/l0.0144900
2/1/201018.6450.0336100mg/l0.0167400
3/1/201012.7050.0257300mg/l0.0095800
4/1/201015.6950.0213100mg/l0.0096800
5/1/201024.6730.0204200mg/l0.0246600
6/1/201029.9250.0222500mg/l0.0235000
7/1/201014.3650.0193300mg/l0.0110100
8/1/201022.6520.0200000mg/l0.0212800
9/1/201017.2450.0207600mg/l0.0119300
10/1/201082.7030.0319200mg/l0.0582700
11/1/201018.8730.0309600mg/l0.0168800
12/1/201029.7550.0309300mg/l0.0188800
1/1/201127.2650.0330800mg/l0.0177300
2/1/201119.4050.0325400mg/l0.0168100
3/1/20118.8850.0311400mg/l0.0086500
4/1/201118.1650.0203900mg/l0.0170200
5/1/201123.9250.0212300mg/l0.0224600
6/1/201113.5330.0185300mg/l0.0124600
7/1/201128.0950.0186600mg/l0.0182900
8/1/201142.3550.0224900mg/l0.0278300
9/1/201119.0450.0241800mg/l0.0160700
10/1/201153.6650.0301000mg/l0.0388100
11/1/201120.1040.0294600mg/l0.0141900
12/1/201117.4250.0301100mg/l0.0139600
Target
mg/l
Threshold
0.011 mg/l
Pass

Nitrogen, Total

No trend was observed after performing a trend analysis.
Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 2.4 8.1
Mean 1.0947 1.0819 0.79616795
Low 0.452 0.00
No. of Samples 57 426

Five-year Trend Graph

     
1/1/2007985.9050.9859000mg/l0.8396800
2/1/2007929.40100.9576500mg/l0.8764200
3/1/20071145.1191.0201400mg/l1.0620200
4/1/2007839.8330.9750600mg/l0.6364200
5/1/20071251.1381.0302700mg/l1.0469600
6/1/20071233.8051.0642000mg/l1.0359900
7/1/20071322.8991.1203600mg/l1.0631300
8/1/20071092.4051.1475300mg/l0.8758100
9/1/20071054.0681.1323500mg/l0.8162500
10/1/2007937.2051.1485800mg/l0.8534700
11/1/20071005.8991.1077100mg/l0.8273600
12/1/2007661.4051.0123100mg/l0.5900200
1/1/20081084.5060.9725800mg/l0.9157300
2/1/2008942.0050.9475100mg/l0.8436700
3/1/2008537.1730.8613600mg/l0.4808400
4/1/20081220.2050.9085300mg/l1.1381000
5/1/20081072.0030.9195500mg/l1.0145700
6/1/20081131.0020.9978100mg/l1.0612600
7/1/20081272.0031.0290600mg/l1.2509600
8/1/2008998.5041.0384800mg/l0.9202500
9/1/20081158.2541.1419900mg/l1.0885800
10/1/20081268.0041.1499600mg/l1.2165300
11/1/20081155.2051.1638300mg/l1.0261400
12/1/20081113.0021.1608300mg/l0.9380700
1/1/20091058.2541.1252000mg/l0.9590400
2/1/20091013.0041.1276200mg/l0.9244100
3/1/20091350.0031.1595800mg/l1.1608700
4/1/20091226.5041.1526600mg/l1.1280600
5/1/20092241.0021.3336300mg/l1.5120700
6/1/20091926.0031.4691300mg/l1.3047500
7/1/20091960.3331.6194700mg/l1.3382100
8/1/20092564.5021.8780600mg/l1.8862000
9/1/20093472.0012.2317200mg/l3.4720000
10/1/20091337.0052.2501400mg/l1.2103500
11/1/20091357.0052.1028100mg/l1.2926700
12/1/20091400.4052.0152100mg/l1.3496900
1/1/20101281.8051.9021200mg/l1.2085700
2/1/20101347.4051.6992700mg/l1.1671700
3/1/20101087.6051.3018700mg/l1.0455300
4/1/20101384.2051.3097300mg/l1.3725100
5/1/20101057.3331.2597900mg/l1.0524600
6/1/20101228.0051.2310600mg/l1.1339600
7/1/2010950.4051.1758200mg/l0.8724200
8/1/20101531.5021.2065100mg/l1.5121800
9/1/20101767.4051.3198100mg/l1.5740600
10/1/20101661.3331.3659900mg/l1.6037500
11/1/20101140.6731.3798800mg/l1.0673900
12/1/20101313.6051.3941500mg/l1.1564000
1/1/20111438.6051.4755200mg/l1.3918600
2/1/20111234.6051.4260300mg/l1.0716700
3/1/20111027.8051.3027700mg/l0.9558800
4/1/20111133.6051.2148100mg/l1.0915500
5/1/20111182.8051.2218300mg/l1.1522000
6/1/20111337.6731.2258500mg/l1.2402200
7/1/20111400.8051.2195500mg/l1.3132600
8/1/20111065.8051.1914100mg/l0.9832600
9/1/20111156.0051.2127800mg/l1.1107100
10/1/20111289.2051.2387100mg/l1.2337500
11/1/2011849.7541.1832000mg/l0.7951500
12/1/2011968.8051.1217300mg/l0.9332800
Pass

Phosphorus, Total

No trend was observed after performing a trend analysis.
Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 3.6 3.8
Mean 0.3581 0.3212 0.46832868
Low 0.12 0.03
No. of Samples 57 481

Five-year Trend Graph

     
1/1/2007599.0050.5990000mg/l0.4179400
2/1/2007479.00110.5390000mg/l0.2634000
3/1/2007633.4490.5704800mg/l0.4610000
4/1/2007810.0030.6303600mg/l0.5109500
5/1/2007606.3390.6255500mg/l0.4651400
6/1/2007363.0050.5818000mg/l0.3190200
7/1/2007436.0090.5546300mg/l0.3745900
8/1/2007376.0050.5374600mg/l0.2911100
9/1/2007535.5690.5211500mg/l0.3202300
10/1/2007367.2050.4473500mg/l0.2858500
11/1/2007381.2290.4098300mg/l0.3114600
12/1/2007307.1760.4005300mg/l0.2458100
1/1/2008330.0060.3828600mg/l0.2642600
2/1/2008365.8360.3811600mg/l0.3064900
3/1/2008377.2540.3547800mg/l0.3093700
4/1/2008464.2050.3709500mg/l0.3682800
5/1/2008471.5040.3859900mg/l0.3635400
6/1/2008490.0030.4164600mg/l0.3196400
7/1/2008616.6730.4642400mg/l0.4189400
8/1/2008576.5040.4993500mg/l0.3779300
9/1/2008488.0050.5178100mg/l0.3298600
10/1/2008414.4050.5095100mg/l0.2793600
11/1/2008475.4050.5101600mg/l0.3140600
12/1/2008650.6730.5369400mg/l0.3941800
1/1/2009488.6050.5156000mg/l0.3286000
2/1/2009595.2540.5187200mg/l0.3597700
3/1/2009466.3360.5151100mg/l0.2879700
4/1/2009505.6050.5303100mg/l0.3252500
5/1/2009400.3330.5178000mg/l0.2882700
6/1/2009400.6730.4761300mg/l0.3519500
7/1/2009415.2050.4639000mg/l0.3827800
8/1/2009291.8050.4133200mg/l0.2451800
9/1/2009274.0040.3812700mg/l0.2322000
10/1/2009267.4050.3415700mg/l0.2390500
11/1/2009282.2050.3218800mg/l0.2605800
12/1/2009267.0050.2996000mg/l0.2447500
1/1/2010345.0050.2879000mg/l0.2948000
2/1/2010528.2050.3273000mg/l0.3457300
3/1/2010386.8050.3461000mg/l0.2952500
4/1/2010569.0050.3963700mg/l0.4420900
5/1/2010283.3330.3965600mg/l0.2707300
6/1/2010572.8050.4475200mg/l0.3793800
7/1/2010492.8050.4721600mg/l0.3681100
8/1/2010868.0020.5287900mg/l0.6253200
9/1/2010767.6050.5922600mg/l0.5950300
10/1/2010806.6730.6318700mg/l0.5834400
11/1/2010567.6730.6792600mg/l0.3689600
12/1/2010944.0050.7411200mg/l0.3948800
1/1/2011916.0050.8116600mg/l0.3763800
2/1/2011656.0050.7763200mg/l0.3912300
3/1/2011529.0050.7365600mg/l0.3387900
4/1/2011608.8050.7035800mg/l0.4794800
5/1/2011642.0050.7159700mg/l0.4060200
6/1/2011639.6730.6652500mg/l0.3550100
7/1/2011540.0050.6025800mg/l0.3909800
8/1/2011493.2050.5754500mg/l0.3418800
9/1/2011496.0050.5699500mg/l0.3053800
10/1/2011541.4050.5587100mg/l0.3588500
11/1/2011497.7540.5346700mg/l0.2977800
12/1/2011462.4050.5051300mg/l0.2838300
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
2011
Historical
period of record
High 114.9 154.1
Mean 51.03 58.1 23.29872
Low 7.90 7.40
No. of Samples 11 346

Five-year Trend Graph

     
1/1/200750.37350.3700000percent (%)50.0900000
2/1/2007111.77381.0700000percent (%)111.1100000
3/1/200785.10382.4100000percent (%)79.5500000
4/1/200772.20379.8600000percent (%)72.1300000
5/1/200753.70274.6300000percent (%)53.1700000
6/1/200761.03372.3600000percent (%)60.5300000
7/1/200746.93371.7900000percent (%)42.7400000
8/1/200787.00367.6600000percent (%)86.5200000
9/1/200770.57365.2400000percent (%)70.0700000
10/1/200788.07367.8800000percent (%)85.0200000
12/1/200785.53375.6200000percent (%)85.2100000
1/1/200884.87383.2100000percent (%)84.7300000
2/1/200862.10378.2300000percent (%)59.4500000
3/1/200843.97372.9100000percent (%)40.3400000
4/1/200846.10264.5100000percent (%)46.0900000
7/1/200853.50151.4200000percent (%)53.5000000
8/1/200878.75255.5800000percent (%)78.6600000
9/1/200827.35251.4300000percent (%)26.4000000
10/1/200889.30262.2300000percent (%)88.2000000
11/1/200837.50157.2800000percent (%)37.5000000
12/1/200872.00259.7300000percent (%)71.7400000
1/1/200971.20262.6800000percent (%)69.4900000
2/1/200959.00259.3900000percent (%)57.3900000
3/1/200980.95268.3300000percent (%)79.4800000
4/1/200933.15258.9700000percent (%)30.8400000
5/1/200986.10167.0700000percent (%)86.1000000
6/1/200948.65263.1800000percent (%)44.5500000
7/1/200940.45258.0500000percent (%)38.0800000
8/1/200922.90252.0300000percent (%)22.2000000
9/1/200952.20147.2400000percent (%)52.2000000
10/1/200932.35247.1100000percent (%)29.0900000
11/1/200962.80243.2300000percent (%)60.1700000
12/1/200977.95248.1100000percent (%)70.7800000
1/1/201071.20253.2300000percent (%)63.7000000
2/1/201092.70264.8700000percent (%)92.6400000
3/1/201084.65270.2800000percent (%)82.1200000
4/1/201075.50277.4700000percent (%)75.3100000
8/1/201060.20173.4500000percent (%)60.2000000
9/1/201050.63462.1100000percent (%)46.9700000
11/1/201094.75268.5300000percent (%)94.4300000
12/1/2010154.10189.9200000percent (%)154.1000000
1/1/201191.00290.1400000percent (%)89.6700000
2/1/201174.25292.9500000percent (%)62.1300000
3/1/20117.90184.4000000percent (%)7.9000000
4/1/201160.90280.4800000percent (%)59.3600000
5/1/201175.95277.3500000percent (%)73.7700000
12/1/201140.95240.9500000percent (%)36.0400000
Target
percent (%)
Threshold
56.00 percent (%)

Oysters

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

Five-year Trend Graph

     
1/1/200775.63275.6300000%75.6300000
1/1/200876.25276.2500000%76.2500000
1/1/200967.84267.8400000%67.8400000
1/1/201071.98271.9800000%71.9800000
1/1/201185.26285.2600000%85.2600000

Rainfall

Units: inches Year
2011
Historical
period of record
High 31.6 67.0
Mean 17.7555610852079
Low 2.29
No. of Samples 351 4,363

Five-year Trend Graph

     
1/1/20071.03311.0300000inches1.0300000
2/1/20071.34281.3400000inches1.3400000
3/1/20070.37310.3700000inches0.3700000
4/1/20072.69192.6900000inches2.6900000
5/1/20070.00220.0000000inches0.0000000
6/1/20072.70282.7000000inches2.7000000
7/1/20073.70313.7000000inches3.7000000
8/1/20073.04313.0400000inches3.0400000
9/1/20072.83302.8300000inches2.8300000
10/1/20070.44170.4400000inches0.4400000
11/1/20071.16301.1600000inches1.1600000
12/1/20070.71310.7100000inches0.7100000
1/1/20082.27312.2700000inches2.2700000
2/1/20082.00292.0000000inches2.0000000
3/1/20081.30181.3000000inches1.3000000
4/1/20081.2521.2500000inches1.2500000
6/1/20085.10245.1000000inches5.1000000
7/1/200810.073110.0700000inches10.0700000
8/1/20085.70315.7000000inches5.7000000
9/1/20085.16305.1600000inches5.1600000
10/1/20082.82312.8200000inches2.8200000
11/1/20080.20300.2000000inches0.2000000
12/1/20080.68310.6800000inches0.6800000
1/1/20090.58310.5800000inches0.5800000
2/1/20090.56280.5600000inches0.5600000
3/1/20091.28311.2800000inches1.2800000
4/1/20091.32301.3200000inches1.3200000
5/1/20092.76312.7600000inches2.7600000
6/1/20093.05303.0500000inches3.0500000
7/1/20093.89313.8900000inches3.8900000
8/1/20093.17313.1700000inches3.1700000
9/1/20098.00308.0000000inches8.0000000
10/1/20090.37310.3700000inches0.3700000
11/1/20092.32302.3200000inches2.3200000
12/1/20095.14315.1400000inches5.1400000
1/1/20102.72312.7200000inches2.7200000
2/1/20102.68282.6800000inches2.6800000
3/1/20107.77317.7700000inches7.7700000
4/1/20104.92304.9200000inches4.9200000
5/1/20101.24311.2400000inches1.2400000
6/1/20102.56302.5600000inches2.5600000
7/1/20105.43315.4300000inches5.4300000
8/1/201013.743113.7400000inches13.7400000
9/1/20102.71302.7100000inches2.7100000
10/1/20100.04310.0400000inches0.0400000
11/1/20100.88300.8800000inches0.8800000
12/1/20101.35311.3500000inches1.3500000
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
Target
inches
Threshold
inches

Salinity

Units: PSS Year
2011
Historical
period of record
High 36.4 39.4
Mean 18.13 18.91 10.13559
Low 1.31 0.00
No. of Samples 62 966

Five-year Trend Graph

     
1/1/200722.63522.6300000PSS12.1300000
2/1/200725.09723.8600000PSS15.7400000
3/1/200723.15523.6200000PSS12.4600000
4/1/200725.41524.0700000PSS13.8500000
5/1/200733.37425.9300000PSS33.3600000
6/1/200728.25726.3200000PSS17.7200000
7/1/200726.38526.9400000PSS14.2100000
8/1/200727.17527.2900000PSS14.2000000
9/1/200727.43528.0000000PSS14.0900000
10/1/200725.86528.0800000PSS13.9300000
11/1/200724.35526.5700000PSS12.8600000
12/1/200726.33526.2500000PSS14.2600000
1/1/200825.45626.1000000PSS15.7600000
2/1/200824.67625.6800000PSS14.9400000
3/1/200827.04625.6200000PSS16.0800000
4/1/200819.99524.6400000PSS11.1500000
5/1/200834.65426.3600000PSS34.6200000
6/1/200836.20228.0000000PSS36.2000000
7/1/200822.40327.4900000PSS7.5800000
8/1/200817.23426.2500000PSS8.4100000
9/1/200821.28625.2900000PSS12.0300000
10/1/200814.76524.4200000PSS6.4400000
11/1/200818.73421.7700000PSS8.5700000
12/1/200815.84318.3700000PSS6.5600000
1/1/200927.83719.2800000PSS18.2300000
2/1/200923.86420.3800000PSS11.5200000
3/1/200925.56521.1000000PSS14.2300000
4/1/200930.11723.6600000PSS19.3200000
5/1/200919.93223.8600000PSS4.2600000
6/1/200929.21626.0800000PSS16.8500000
7/1/200928.54926.2000000PSS20.0400000
8/1/200930.831127.3600000PSS22.7900000
9/1/200927.73827.7300000PSS18.5800000
10/1/200923.511126.6300000PSS17.8500000
11/1/200922.32527.0200000PSS12.2800000
12/1/200924.861226.3000000PSS18.2500000
1/1/201012.41523.6100000PSS7.4500000
2/1/201023.081022.3200000PSS16.6600000
3/1/201019.19720.9000000PSS13.1900000
4/1/201017.121619.8300000PSS13.3700000
5/1/201022.16519.8000000PSS20.5400000
6/1/201026.50320.0800000PSS26.4700000
7/1/201019.74521.3000000PSS17.1600000
8/1/201017.70520.4000000PSS14.1800000
9/1/201014.54719.6300000PSS8.9200000
10/1/201028.11721.4600000PSS27.4100000
11/1/201023.86521.7400000PSS16.5300000
12/1/201025.33621.5500000PSS17.9400000
1/1/201122.44522.0000000PSS15.5900000
2/1/201123.46722.9600000PSS17.9800000
3/1/201125.59624.8000000PSS18.7300000
4/1/201119.62523.3800000PSS14.0600000
5/1/201127.68524.0200000PSS18.8100000
6/1/201136.40125.8700000PSS36.4000000
7/1/201122.24725.8300000PSS20.0100000
8/1/201119.20325.1200000PSS18.4600000
9/1/201126.02925.1900000PSS24.9100000
10/1/201120.20325.2900000PSS19.4100000
11/1/201129.97625.6700000PSS29.9400000
12/1/20119.93521.2600000PSS5.6800000

Turbidity

Units: NTU Year
2011
Historical
period of record
High 69.0 402.0
Mean 3.75 3.06 14.32797
Low 0.80 0.34
No. of Samples 66 898

Five-year Trend Graph

     
1/1/20072.3562.3500000NTU2.1600000
2/1/20073.16162.7600000NTU2.6800000
3/1/20076.1493.8800000NTU5.1500000
4/1/20075.9054.3900000NTU5.7600000
5/1/20078.3895.1900000NTU7.3200000
6/1/20075.9975.3200000NTU3.9000000
7/1/200711.33106.8200000NTU7.0500000
8/1/20078.3767.6900000NTU4.4200000
9/1/20078.75118.1200000NTU4.8700000
10/1/20074.3257.8600000NTU4.1400000
11/1/20074.55107.2200000NTU3.8400000
12/1/20074.0256.8900000NTU3.9400000
1/1/20083.1275.5200000NTU2.8600000
2/1/20084.5964.8900000NTU4.1500000
3/1/20083.6454.0400000NTU2.7600000
4/1/20084.7354.1100000NTU4.4600000
5/1/20084.0254.0200000NTU3.8400000
6/1/20084.4734.1000000NTU4.4600000
7/1/20084.2344.2800000NTU3.9500000
8/1/20083.9044.1700000NTU3.6900000
9/1/20082.9864.0600000NTU2.6500000
10/1/20083.2253.8000000NTU3.0900000
11/1/20083.2563.6800000NTU2.9000000
12/1/20082.4543.3400000NTU2.2600000
1/1/20092.8363.1100000NTU2.4700000
2/1/20094.4143.1900000NTU3.8000000
3/1/20095.8853.6700000NTU5.3600000
4/1/20093.7173.7600000NTU3.0400000
5/1/200911.1735.0800000NTU6.3400000
6/1/200912.3336.7200000NTU7.5000000
7/1/20099.9577.9100000NTU4.0600000
8/1/20095.9968.1700000NTU3.4700000
9/1/20096.6368.3000000NTU4.2200000
10/1/200911.0369.5200000NTU6.2400000
11/1/20094.7258.4400000NTU4.1900000
12/1/20092.6766.8300000NTU2.3200000
1/1/20104.5055.9200000NTU3.6100000
2/1/20106.8656.0700000NTU5.2900000
3/1/20103.2365.5000000NTU2.9200000
4/1/20102.5284.0800000NTU2.3800000
5/1/20102.7343.7500000NTU2.5300000
6/1/20108.4654.7200000NTU5.6400000
7/1/20103.6864.5800000NTU3.5500000
8/1/20102.8343.9100000NTU2.6900000
9/1/20103.2763.9200000NTU2.8600000
10/1/201013.3065.7100000NTU8.4300000
11/1/20103.1545.7800000NTU2.9200000
12/1/201015.6766.9800000NTU4.6000000
1/1/201116.3159.0900000NTU5.6000000
2/1/20113.4369.1900000NTU3.1600000
3/1/20113.5569.2400000NTU3.3100000
4/1/20115.2657.9000000NTU5.1100000
5/1/20115.7858.3300000NTU5.5900000
6/1/20116.9036.8700000NTU6.1500000
7/1/20113.9774.8200000NTU2.9900000
8/1/20115.3655.1400000NTU4.8400000
9/1/20112.9585.0400000NTU2.4000000
10/1/20118.4655.5700000NTU6.5000000
11/1/20112.8765.0900000NTU2.4300000
12/1/20112.9154.4200000NTU2.7300000
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 »

Loading oyster site map...
Most Recent Sarasota County Oyster Monitoring Program Data
Icon Site ID Year Dead Live Total % Live
1 FRK1 2011 4 1 5 20
2 FRK2 2011 96 566 662 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.