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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 0.0175 0.016 0.02826813
Low 0.0017 0.0008
No. of Samples 127 625

Five-year Trend Graph

     
1/1/20078.0760.0080700mg/l0.0070000
2/1/200716.28100.0121800mg/l0.0080500
3/1/200721.0490.0151300mg/l0.0142700
4/1/200711.1660.0141400mg/l0.0104300
5/1/200721.33100.0155800mg/l0.0137700
6/1/200718.2860.0160300mg/l0.0164500
7/1/200743.18100.0218800mg/l0.0322700
8/1/200727.8760.0238100mg/l0.0189400
9/1/200733.37100.0258700mg/l0.0275500
10/1/200725.0260.0281800mg/l0.0193500
11/1/200728.92100.0294400mg/l0.0254700
12/1/200721.4580.0299700mg/l0.0212100
1/1/200831.9080.0280900mg/l0.0262800
2/1/200817.2380.0263200mg/l0.0130100
3/1/200821.0150.0242600mg/l0.0173800
4/1/200812.7070.0222000mg/l0.0120100
5/1/200814.7650.0198400mg/l0.0138800
6/1/200817.9030.0192500mg/l0.0167300
7/1/200835.9040.0199200mg/l0.0308700
8/1/200829.9050.0220300mg/l0.0290400
9/1/200822.9470.0223500mg/l0.0193500
10/1/200828.5770.0250000mg/l0.0218800
11/1/200823.3470.0264300mg/l0.0160100
12/1/200826.3040.0278300mg/l0.0261900
1/1/200910.3070.0235600mg/l0.0069800
2/1/200919.2650.0217900mg/l0.0132400
3/1/200926.0590.0223000mg/l0.0207400
4/1/200915.0570.0200500mg/l0.0133200
5/1/200948.8040.0242900mg/l0.0181700
6/1/200978.8730.0330600mg/l0.0478300
7/1/200987.7570.0459600mg/l0.0435000
8/1/200936.9870.0489200mg/l0.0170600
9/1/200951.2050.0531100mg/l0.0250400
10/1/200939.0070.0571000mg/l0.0318100
11/1/200928.8670.0537800mg/l0.0253500
12/1/200916.1670.0433300mg/l0.0074400
1/1/201036.27110.0347500mg/l0.0130100
2/1/201020.33110.0319700mg/l0.0180400
3/1/201011.92110.0254200mg/l0.0082900
4/1/201014.03110.0212600mg/l0.0082300
5/1/201024.6050.0205500mg/l0.0246000
6/1/201030.98110.0230200mg/l0.0246400
7/1/201016.17110.0196700mg/l0.0130900
8/1/201022.6560.0200600mg/l0.0212800
9/1/201018.36140.0211300mg/l0.0137700
10/1/201070.5480.0305500mg/l0.0506100
11/1/201017.2380.0293200mg/l0.0155800
12/1/201033.03110.0296600mg/l0.0185100
1/1/201126.62110.0314100mg/l0.0149300
2/1/201116.64110.0304000mg/l0.0145400
3/1/20118.85110.0288200mg/l0.0085600
4/1/201116.67110.0198400mg/l0.0156000
5/1/201122.44110.0207100mg/l0.0207500
6/1/201113.2380.0174100mg/l0.0120800
7/1/201132.22110.0183400mg/l0.0195000
8/1/201142.57110.0226600mg/l0.0272600
9/1/201117.96110.0241800mg/l0.0144600
10/1/201159.35110.0313000mg/l0.0466200
11/1/201124.7090.0316700mg/l0.0186000
12/1/201119.81110.0327700mg/l0.0153600
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 1.0825 0.79608904
Low 0.452 0.00
No. of Samples 57 426

Five-year Trend Graph

     
1/1/2007986.4050.9864000mg/l0.8415500
2/1/2007929.60100.9580000mg/l0.8765800
3/1/20071145.5691.0205200mg/l1.0626000
4/1/2007842.0030.9758900mg/l0.6391400
5/1/20071251.0081.0309100mg/l1.0474500
6/1/20071235.0051.0649300mg/l1.0376500
7/1/20071323.5691.1211200mg/l1.0643900
8/1/20071093.6051.1484500mg/l0.8776300
9/1/20071055.2581.1334000mg/l0.8181000
10/1/2007937.6051.1493400mg/l0.8536900
11/1/20071006.3391.1085600mg/l0.8285800
12/1/2007662.6051.0131600mg/l0.5917600
1/1/20081085.1760.9734300mg/l0.9167600
2/1/2008943.6050.9484300mg/l0.8461900
3/1/2008540.0030.8625500mg/l0.4845100
4/1/20081221.0050.9097800mg/l1.1392600
5/1/20081073.0030.9209000mg/l1.0152000
6/1/20081132.0020.9991300mg/l1.0619600
7/1/20081272.6731.0303800mg/l1.2514700
8/1/2008999.5041.0397000mg/l0.9216700
9/1/20081159.2541.1429000mg/l1.0898000
10/1/20081269.0041.1509000mg/l1.2176200
11/1/20081156.0051.1647400mg/l1.0274000
12/1/20081115.0021.1619000mg/l0.9404400
1/1/20091058.7541.1262500mg/l0.9601500
2/1/20091014.0041.1286700mg/l0.9258700
3/1/20091350.6731.1605700mg/l1.1622800
4/1/20091226.5041.1534900mg/l1.1280600
5/1/20092242.0021.3344900mg/l1.5146500
6/1/20091927.3331.4698800mg/l1.3062800
7/1/20091961.0031.6202500mg/l1.3384200
8/1/20092565.5021.8788300mg/l1.8866400
9/1/20093474.0012.2327200mg/l3.4740000
10/1/20091337.4052.2512100mg/l1.2105400
11/1/20091357.0052.1037100mg/l1.2926700
12/1/20091400.4052.0158800mg/l1.3496900
1/1/20101282.2051.9027500mg/l1.2088500
2/1/20101347.4051.6997300mg/l1.1671700
3/1/20101087.6051.3020000mg/l1.0455300
4/1/20101384.2051.3098000mg/l1.3725100
5/1/20101057.3331.2598600mg/l1.0524600
6/1/20101228.0051.2311200mg/l1.1339600
7/1/2010950.8051.1758900mg/l0.8726700
8/1/20101531.5021.2065700mg/l1.5121800
9/1/20101767.8051.3199400mg/l1.5746400
10/1/20101661.3331.3661300mg/l1.6037500
11/1/20101140.6731.3800200mg/l1.0673900
12/1/20101313.6051.3942800mg/l1.1564000
1/1/20111438.6051.4755800mg/l1.3918600
2/1/20111234.6051.4261000mg/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
11/1/2011850.2541.1832900mg/l0.7954200
12/1/2011968.8051.1218100mg/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 0.4295 0.3308 0.54027765
Low 0.12 0.03
No. of Samples 127 734

Five-year Trend Graph

     
1/1/2007545.8360.5458300mg/l0.3909500
2/1/2007398.93140.4723800mg/l0.2038000
3/1/2007602.10100.5156200mg/l0.4444700
4/1/2007810.0030.5892200mg/l0.5109500
5/1/2007567.91110.5849500mg/l0.4514600
6/1/2007349.1760.5456600mg/l0.3121600
7/1/2007419.40100.5245900mg/l0.3625300
8/1/2007348.3360.5161500mg/l0.2756900
9/1/2007298.8990.4656200mg/l0.2397500
10/1/2007337.6760.3869000mg/l0.2670300
11/1/2007361.10100.3524300mg/l0.2948500
12/1/2007274.1380.3399200mg/l0.2257700
1/1/2008296.2580.3194000mg/l0.2449100
2/1/2008321.8880.3149900mg/l0.2715800
3/1/2008333.8050.3208100mg/l0.2711400
4/1/2008410.1470.3328800mg/l0.3380100
5/1/2008425.2050.3435700mg/l0.3345700
6/1/2008490.0030.3795500mg/l0.3196400
7/1/2008520.0040.4168400mg/l0.3606200
8/1/2008515.2050.4490600mg/l0.3533500
9/1/2008411.4370.4620000mg/l0.2937200
10/1/2008346.0070.4513100mg/l0.2430000
11/1/2008405.2970.4479900mg/l0.2833500
12/1/2008520.5040.4530700mg/l0.2987100
1/1/2009406.1470.4340900mg/l0.2851400
2/1/2009510.2050.4332600mg/l0.3096800
3/1/2009367.5690.4259500mg/l0.2340500
4/1/2009414.0070.4372800mg/l0.2676000
5/1/2009327.7540.4243600mg/l0.2265700
6/1/2009400.6730.4043900mg/l0.3519500
7/1/2009392.2970.4020800mg/l0.3649900
8/1/2009269.8360.3620200mg/l0.2283500
9/1/2009241.2050.3409600mg/l0.1999700
10/1/2009248.1470.3133100mg/l0.2271700
11/1/2009261.5770.3022800mg/l0.2442800
12/1/2009256.4370.2782400mg/l0.2380400
1/1/2010398.64110.2793000mg/l0.3441600
2/1/2010634.82110.3401300mg/l0.4076600
3/1/2010455.64110.3758700mg/l0.3419800
4/1/2010659.55110.4444400mg/l0.4975100
5/1/2010296.0050.4501800mg/l0.2822100
6/1/2010685.64110.5217200mg/l0.4337600
7/1/2010576.55110.5513700mg/l0.4177900
8/1/2010868.0060.5902300mg/l0.6253200
9/1/2010800.29140.6476700mg/l0.6233900
10/1/2010856.2580.6804600mg/l0.6097400
11/1/2010616.1380.7338100mg/l0.4035900
12/1/20101215.45110.8221100mg/l0.5092500
1/1/20111187.27110.9239000mg/l0.5035500
2/1/2011810.00110.9142300mg/l0.4771200
3/1/2011643.18110.8880500mg/l0.3998400
4/1/2011700.18110.8620400mg/l0.5336200
5/1/2011782.73110.8898000mg/l0.4818400
6/1/2011704.6380.8046700mg/l0.4065500
7/1/2011634.55110.7125500mg/l0.4537900
8/1/2011580.73110.6743300mg/l0.3956300
9/1/2011610.00110.6688000mg/l0.3709400
10/1/2011662.82110.6625800mg/l0.4416200
11/1/2011613.6790.6344000mg/l0.3742500
12/1/2011568.73110.6117500mg/l0.3426900
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 114.9 169.7
Mean 54.44 68.26 29.06881
Low 7.90 7.40
No. of Samples 96 776

Five-year Trend Graph

     
1/1/200750.37350.3700000percent (%)50.0900000
2/1/2007102.52476.4500000percent (%)100.6400000
3/1/200785.10379.3300000percent (%)79.5500000
4/1/200772.20377.5500000percent (%)72.1300000
5/1/200753.70272.7800000percent (%)53.1700000
6/1/200757.35570.2100000percent (%)56.8800000
7/1/200746.93369.6300000percent (%)42.7400000
8/1/200787.00367.0500000percent (%)86.5200000
9/1/200770.57364.6300000percent (%)70.0700000
10/1/200788.07367.2700000percent (%)85.0200000
12/1/200785.53375.6200000percent (%)85.2100000
1/1/200884.87383.2100000percent (%)84.7300000
2/1/200862.10378.2300000percent (%)59.4500000
3/1/200873.36578.7900000percent (%)61.7400000
4/1/200846.10270.3900000percent (%)46.0900000
7/1/200853.50158.7700000percent (%)53.5000000
8/1/200878.75262.9300000percent (%)78.6600000
9/1/200856.32458.6700000percent (%)47.4400000
10/1/200889.30269.4700000percent (%)88.2000000
11/1/200837.50163.0700000percent (%)37.5000000
12/1/200872.00264.5600000percent (%)71.7400000
1/1/200986.98470.1400000percent (%)84.4900000
2/1/200959.00266.8500000percent (%)57.3900000
3/1/200980.95270.9600000percent (%)79.4800000
4/1/200959.39465.9700000percent (%)51.3900000
5/1/200986.10174.0700000percent (%)86.1000000
6/1/200978.85675.2100000percent (%)72.5700000
7/1/200946.11668.4000000percent (%)44.0400000
8/1/200939.32865.1200000percent (%)37.2200000
9/1/200958.00561.3000000percent (%)57.2700000
10/1/200979.56864.6600000percent (%)70.5400000
11/1/200962.80260.7700000percent (%)60.1700000
12/1/2009106.47965.3800000percent (%)101.2700000
1/1/201071.20669.5600000percent (%)63.7000000
2/1/201092.911178.4900000percent (%)92.6500000
3/1/201080.63882.2600000percent (%)78.4900000
4/1/201080.011782.3400000percent (%)78.1100000
5/1/201047.41279.7700000percent (%)47.3600000
7/1/201042.71268.7300000percent (%)42.6800000
8/1/201063.281262.8100000percent (%)62.9400000
9/1/201053.143457.3100000percent (%)48.9000000
10/1/201078.09656.9300000percent (%)75.9300000
11/1/201091.121865.6700000percent (%)90.1200000
12/1/2010141.171078.2500000percent (%)138.1800000
1/1/201191.021686.3000000percent (%)89.6900000
2/1/201172.301887.8100000percent (%)61.5000000
3/1/201117.241081.8200000percent (%)11.6700000
4/1/201160.911678.9600000percent (%)59.3800000
5/1/201175.541676.3600000percent (%)73.4000000
7/1/201150.40455.2800000percent (%)49.0200000
9/1/201174.77665.4100000percent (%)73.5500000
11/1/201156.48460.5500000percent (%)56.4400000
12/1/201140.95655.6500000percent (%)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
1/1/201185.01285.0100000%85.0100000

Rainfall

Units: inches Year
2011
Historical
period of record
High 31.6 67.0
Mean 17.9193393001076
Low 2.29
No. of Samples 351 4,675

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
5/1/20070.00230.0000000inches0.0000000
6/1/20072.70282.7000000inches2.7000000
7/1/20073.70313.7000000inches3.7000000
8/1/20073.04313.0400000inches3.0400000
9/1/20072.83302.8300000inches2.8300000
10/1/20070.44180.4400000inches0.4400000
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
9/1/200910.243110.2400000inches10.2400000
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 14.61 17.34 10.76566
Low 1.31 0.00
No. of Samples 106 1,250

Five-year Trend Graph

     
1/1/200723.68623.6800000PSS14.0200000
2/1/200726.53925.1100000PSS18.3800000
3/1/200723.82624.6800000PSS14.1900000
4/1/200726.59625.1600000PSS15.9700000
5/1/200733.33526.7900000PSS33.3300000
6/1/200728.45827.0700000PSS18.9100000
7/1/200727.26627.6600000PSS16.2500000
8/1/200728.36627.9700000PSS16.4500000
9/1/200728.94628.8200000PSS16.5100000
10/1/200727.13628.9100000PSS16.1300000
11/1/200725.58627.6200000PSS14.9500000
12/1/200727.48627.4600000PSS16.4100000
1/1/200826.59827.3500000PSS18.5200000
2/1/200826.61827.0600000PSS18.1300000
3/1/200827.76726.8600000PSS17.7500000
4/1/200821.12725.8600000PSS13.8100000
5/1/200834.36527.3200000PSS34.3300000
6/1/200836.20328.7700000PSS36.2000000
7/1/200825.15428.5300000PSS10.9800000
8/1/200818.25527.1400000PSS10.2200000
9/1/200822.37726.2400000PSS13.6300000
10/1/200815.46725.3000000PSS7.2700000
11/1/200819.87622.8800000PSS11.4900000
12/1/200817.63419.7900000PSS8.9700000
1/1/200928.05920.2700000PSS20.0400000
2/1/200925.67521.5100000PSS14.2100000
3/1/200927.39722.3500000PSS17.9300000
4/1/200931.34924.9900000PSS22.1200000
5/1/200926.42326.0800000PSS8.9400000
6/1/200929.21628.0100000PSS16.8500000
7/1/200928.351128.0600000PSS21.2300000
8/1/200931.311329.0000000PSS24.2200000
9/1/200928.841029.2500000PSS20.8700000
10/1/200923.361327.9200000PSS18.5000000
11/1/200923.80727.4800000PSS15.4600000
12/1/200923.581426.5400000PSS17.7800000
1/1/201010.931123.6400000PSS5.6400000
2/1/201020.101621.7700000PSS11.2600000
3/1/201017.431319.8700000PSS9.6800000
4/1/201014.812218.4400000PSS9.5300000
5/1/201020.34717.8700000PSS18.4900000
6/1/201026.32518.3200000PSS26.2900000
7/1/201018.71719.6200000PSS16.3000000
8/1/201013.55718.5300000PSS9.2600000
9/1/201011.661617.5700000PSS6.9100000
10/1/201026.56819.5200000PSS25.5700000
11/1/201021.091019.6500000PSS12.3900000
12/1/201020.231018.6300000PSS11.6900000
1/1/201120.171118.8800000PSS12.5900000
2/1/201120.791320.0800000PSS13.8700000
3/1/201121.351021.7000000PSS12.5900000
4/1/201118.931120.4300000PSS12.0600000
5/1/201124.911121.0600000PSS14.9600000
6/1/201136.40223.7600000PSS36.4000000
7/1/201119.88923.7100000PSS17.3400000
8/1/201118.50523.3300000PSS17.7100000
9/1/201124.351123.8300000PSS22.8300000
10/1/201119.46523.9200000PSS18.6200000
11/1/201129.73724.7200000PSS29.7000000
12/1/201111.311120.5400000PSS6.0000000

Turbidity

Units: NTU Year
2011
Historical
period of record
High 69.0 402.0
Mean 4.31 3.22 17.8337
Low 0.80 0.34
No. of Samples 136 1,152

Five-year Trend Graph

     
1/1/20072.4672.4600000NTU2.2700000
2/1/20073.14192.8000000NTU2.7200000
3/1/20076.23103.9400000NTU5.3100000
4/1/20075.7864.4000000NTU5.6600000
5/1/20078.31115.1800000NTU7.4400000
6/1/20075.5385.2400000NTU3.6500000
7/1/200710.63116.6000000NTU6.6300000
8/1/20077.6077.3500000NTU4.1800000
9/1/20078.29127.6900000NTU4.7100000
10/1/20074.1767.4200000NTU4.0100000
11/1/20074.46116.7800000NTU3.8200000
12/1/20073.9266.5100000NTU3.8400000
1/1/20083.2295.2800000NTU3.0000000
2/1/20084.7284.8000000NTU4.3700000
3/1/20084.1564.1100000NTU3.2000000
4/1/20084.5974.1800000NTU4.3700000
5/1/20084.0764.1100000NTU3.9100000
6/1/20084.4734.2000000NTU4.4600000
7/1/20084.3254.3900000NTU4.0900000
8/1/20083.7854.2300000NTU3.6100000
9/1/20082.8484.0100000NTU2.6000000
10/1/20083.1173.7700000NTU3.0200000
11/1/20083.4083.6500000NTU3.0900000
12/1/20082.3853.3100000NTU2.2300000
1/1/20093.0283.0900000NTU2.6900000
2/1/20094.3753.1900000NTU3.8700000
3/1/20095.7173.6700000NTU5.2100000
4/1/20093.7193.7700000NTU3.1800000
5/1/20098.9344.6900000NTU4.8700000
6/1/200912.3336.3500000NTU7.5000000
7/1/200911.2697.7200000NTU4.8300000
8/1/20095.3987.8900000NTU3.4600000
9/1/20096.4078.0000000NTU4.3200000
10/1/20099.7189.0000000NTU6.0400000
11/1/20094.6178.2800000NTU4.2100000
12/1/20092.7886.6900000NTU2.4800000
1/1/20104.75115.6100000NTU3.5600000
2/1/20107.65115.9800000NTU5.6200000
3/1/20103.38125.4800000NTU2.9400000
4/1/20102.66144.3100000NTU2.5100000
5/1/20102.7764.0000000NTU2.5900000
6/1/20108.27114.9100000NTU5.6800000
7/1/20103.98124.7900000NTU3.8500000
8/1/20102.9984.0100000NTU2.7900000
9/1/20103.20153.9800000NTU2.7800000
10/1/201016.96116.3600000NTU11.9900000
11/1/20103.4296.4700000NTU3.2400000
12/1/201021.98128.7600000NTU6.2900000
1/1/201120.901111.5800000NTU6.5600000
2/1/20113.711211.7000000NTU3.5200000
3/1/20113.881211.8100000NTU3.6800000
4/1/20115.40119.8800000NTU5.2100000
5/1/20115.801110.2800000NTU5.5700000
6/1/20117.1387.8000000NTU6.3000000
7/1/20115.03135.1600000NTU3.7800000
8/1/20115.48115.4500000NTU4.9900000
9/1/20113.54145.4000000NTU2.9500000
10/1/20119.49116.0800000NTU7.2700000
11/1/20113.49115.6900000NTU3.1100000
12/1/20112.96115.0000000NTU2.7200000
Other Measures of Creek Health

Oysters

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

Loading oyster site map...
Most Recent Sarasota County Oyster Monitoring Program Data
Icon Site ID Year Dead Live Total % Live
1 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.