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Phillippi Creek Condition Report for 2011

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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: 35,771 acres
  • Location: North Sarasota County, south Manatee County
  • Discharges into: Sarasota Bay

Phillippi Creek Basin consists primarily of residential properties west of Interstate 75, with commercial properties situated along the major arterial transportation routes. The area east of Interstate 75 is primarily rural with scattered low density residential area. Much of the area east of Interstate 75 is in agriculture use. Phillippi Creek drains from the north and northeast to south and southwest. The major conveyance system in the watershed consists of approximately 47 miles of open channels, most of which have been dredged in the past. The soils in the Phillippi Creek Watershed are primarily Myakka with the upland soils containing poorly to very poorly drained sands and the stream-side soils consisting of sands that are better drained. For basin details see: Phillippi Creek Flood Study Update (2001)

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:
  • 1937
  • 1941
  • 1966
  • 1971
  • 1971A
Pass

Chlorophyll a

Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 0.0323 0.115
Mean 0.0038 0.0037 0.01073012
Low 0.0005 0.00
No. of Samples 120 926

Five-year Trend Graph

      
1/1/20073.28170.0032800mg/l0.0016500
2/1/20074.69170.0039900mg/l0.0024300
3/1/20072.98170.0036500mg/l0.0020000
4/1/20073.81170.0036900mg/l0.0022000
5/1/20072.09170.0033700mg/l0.0012300
6/1/20074.49170.0035600mg/l0.0027900
7/1/20076.54170.0041000mg/l0.0041100
8/1/200711.74140.0052800mg/l0.0083100
9/1/20074.51150.0055300mg/l0.0023500
10/1/20072.1020.0052500mg/l0.0020600
11/1/20072.74160.0053500mg/l0.0021500
12/1/20072.22150.0049800mg/l0.0020400
1/1/20082.27150.0042600mg/l0.0017800
2/1/20085.38150.0032000mg/l0.0032800
3/1/20083.12170.0029700mg/l0.0021800
4/1/20086.19140.0036500mg/l0.0032000
5/1/20084.85150.0040100mg/l0.0034400
6/1/200811.20210.0055000mg/l0.0053300
7/1/200817.51180.0080400mg/l0.0106700
8/1/200812.54220.0092400mg/l0.0066400
9/1/200818.35220.0117700mg/l0.0098000
10/1/20089.80170.0123800mg/l0.0035300
11/1/20082.32100.0119500mg/l0.0020900
12/1/20082.72100.0105400mg/l0.0023100
1/1/20093.06100.0081300mg/l0.0024900
2/1/20097.88100.0073600mg/l0.0052200
3/1/20093.50120.0048800mg/l0.0028000
4/1/200912.8480.0053900mg/l0.0040500
5/1/20097.2520.0062100mg/l0.0072300
6/1/20095.54140.0066800mg/l0.0039100
7/1/20094.08100.0068500mg/l0.0033000
8/1/20094.24160.0062400mg/l0.0037300
9/1/20092.78100.0061200mg/l0.0023400
10/1/20093.68120.0046000mg/l0.0028700
11/1/20097.48140.0046300mg/l0.0035700
12/1/20096.40120.0047800mg/l0.0049600
1/1/20106.97100.0052600mg/l0.0056300
2/1/20107.70100.0058400mg/l0.0049700
3/1/20106.47120.0064500mg/l0.0055400
4/1/20103.3780.0064000mg/l0.0031300
5/1/20102.69100.0056000mg/l0.0025400
6/1/20104.65100.0053100mg/l0.0036700
7/1/201014.5020.0065600mg/l0.0144200
8/1/201010.71100.0070700mg/l0.0062100
9/1/20104.87100.0068000mg/l0.0037100
10/1/20102.49100.0066500mg/l0.0020200
11/1/20103.74100.0068300mg/l0.0021300
12/1/201010.42100.0077900mg/l0.0024900
1/1/20117.77120.0066700mg/l0.0038400
2/1/20114.44100.0056200mg/l0.0028600
3/1/201114.8380.0072800mg/l0.0096100
4/1/20114.09100.0075500mg/l0.0035300
5/1/20117.88100.0082400mg/l0.0044000
6/1/20119.21100.0080400mg/l0.0061900
7/1/20115.32100.0076300mg/l0.0034000
8/1/20116.14120.0079100mg/l0.0036300
9/1/20114.8480.0062500mg/l0.0036000
10/1/20113.63120.0061700mg/l0.0032600
11/1/20115.0880.0057000mg/l0.0030600
12/1/20113.36100.0047300mg/l0.0026300
Target
mg/l
Threshold
0.02 mg/l
Pass

Nitrogen, Total

Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 3.74 19.23
Mean 1.1073 1.2097 1.64797224
Low 0.383 0.144
No. of Samples 108 1,405

Five-year Trend Graph

      
1/1/20071041.82171.0418200mg/l1.0041700
2/1/20071158.53171.1001800mg/l1.0940500
3/1/2007768.03170.9894600mg/l0.7479900
4/1/2007762.12170.9326300mg/l0.7307500
5/1/2007676.38170.8813800mg/l0.6515200
6/1/2007865.41170.8787200mg/l0.7811600
7/1/20071008.79170.8732100mg/l0.9543500
8/1/2007845.89140.8211000mg/l0.8162600
9/1/2007599.54140.7930200mg/l0.5513800
10/1/20071120.0010.8526700mg/l1.1200000
11/1/2007673.93150.8522600mg/l0.6190400
12/1/2007792.32140.8400800mg/l0.7720900
1/1/2008946.50140.8297000mg/l0.8993800
2/1/2008723.29140.8092600mg/l0.6633000
3/1/2008700.27150.8260500mg/l0.6558400
4/1/20081070.07140.8177300mg/l1.0058900
5/1/2008913.93140.8577300mg/l0.8654200
6/1/20081231.32190.9309000mg/l1.0160900
7/1/20081200.06180.9731600mg/l1.1299100
8/1/20081391.52211.0845300mg/l1.2954300
9/1/20081351.70201.1931000mg/l1.3004700
10/1/20081165.41171.2089900mg/l1.0309800
11/1/2008861.4491.2002400mg/l0.8121400
12/1/2008762.4491.1221000mg/l0.7171500
1/1/2009766.2291.0497900mg/l0.7371400
2/1/2009782.7890.9483300mg/l0.7443300
3/1/2009871.80100.8683500mg/l0.8259200
4/1/2009883.6380.8213900mg/l0.8585000
5/1/20091106.0010.8621500mg/l1.1060000
6/1/20091054.27110.9107800mg/l1.0112600
7/1/20091348.6791.0078600mg/l1.2704900
8/1/20091484.25121.1247700mg/l1.3639000
9/1/20091248.2291.1875100mg/l1.1154400
10/1/20091299.60101.2568400mg/l1.2412700
11/1/20091172.27111.2678800mg/l1.1484700
12/1/20091635.80101.3648000mg/l1.5846800
1/1/20101460.6791.3834700mg/l1.4066200
2/1/20101534.8991.3919100mg/l1.4466200
3/1/20101164.90101.3780200mg/l1.0560200
4/1/20101074.0081.3404200mg/l1.0496200
5/1/2010893.8991.2940300mg/l0.8738300
6/1/20101028.3391.1927800mg/l1.0103000
7/1/20101440.0011.1893400mg/l1.4400000
8/1/20101267.4491.1447600mg/l1.2062800
9/1/20101504.0091.2012800mg/l1.4668000
10/1/2010950.4491.1806800mg/l0.9188100
11/1/20101050.6791.2068100mg/l1.0069500
12/1/20101304.8991.2529100mg/l1.1977500
1/1/2011889.20101.1611100mg/l0.8377000
2/1/2011960.7891.1100000mg/l0.8723700
3/1/20112406.6381.2604400mg/l2.3426200
4/1/20111349.8991.3270100mg/l1.1921000
5/1/20111160.2291.3452700mg/l1.1085800
6/1/20111046.3391.3021800mg/l1.0425800
7/1/20111109.0091.3388100mg/l1.0095300
8/1/20111125.80101.3663100mg/l1.0805600
9/1/20111500.6381.2153100mg/l1.4353800
10/1/20111275.70101.2029500mg/l1.2368700
11/1/20111000.7581.1763700mg/l0.9610100
12/1/2011911.6791.1539300mg/l0.8705600
Caution

Phosphorus, Total

Score: Caution
Units: mg/l Year
2011
Historical
period of record
High 2.00 7.36
Mean 0.4928 0.451 0.4659317
Low 0.106 0.047
No. of Samples 107 1,390

Five-year Trend Graph

      
1/1/2007359.18170.3591800mg/l0.2546500
2/1/2007273.76170.3164700mg/l0.2367800
3/1/2007328.59170.3205100mg/l0.2532900
4/1/2007346.47170.3270000mg/l0.2963300
5/1/2007442.29170.3500600mg/l0.3579300
6/1/2007691.00170.4068800mg/l0.5743900
7/1/2007945.94170.5046800mg/l0.8203100
8/1/2007492.00140.5410500mg/l0.4363600
9/1/2007575.64140.5822200mg/l0.4974500
10/1/2007390.0010.5894800mg/l0.3900000
11/1/2007302.20150.5661300mg/l0.2691700
12/1/2007364.00140.5116300mg/l0.3161300
1/1/2008368.79140.4154400mg/l0.3119900
2/1/2008339.64140.3900500mg/l0.2875800
3/1/2008420.27150.3641500mg/l0.3416400
4/1/2008505.00140.3833200mg/l0.4386600
5/1/2008532.93140.4217700mg/l0.4560700
6/1/2008841.11190.5012900mg/l0.5956300
7/1/2008456.83180.5159600mg/l0.4060200
8/1/2008481.71210.5396400mg/l0.4017100
9/1/2008417.40200.5391600mg/l0.3896200
10/1/2008457.12170.5311800mg/l0.4126900
11/1/2008515.4490.5282700mg/l0.3929300
12/1/2008666.0090.4990800mg/l0.4752400
1/1/2009409.3390.4911700mg/l0.3500600
2/1/2009507.5690.4954800mg/l0.4127600
3/1/2009940.80100.5827100mg/l0.6842000
4/1/2009925.6380.6607900mg/l0.8178800
5/1/2009830.0010.7132200mg/l0.8300000
6/1/2009566.45110.6966300mg/l0.5211400
7/1/2009501.5690.7120000mg/l0.4922200
8/1/2009458.33120.7038000mg/l0.4327000
9/1/2009488.4490.6284000mg/l0.4309700
10/1/2009423.40100.5447000mg/l0.3871000
11/1/2009400.18110.4730600mg/l0.3661300
12/1/2009400.40100.4453900mg/l0.3876400
1/1/2010362.3390.4221800mg/l0.3361900
2/1/2010429.0090.4172900mg/l0.3943200
3/1/2010374.50100.3983000mg/l0.3261000
4/1/2010602.7580.4281900mg/l0.5231600
5/1/2010670.1190.4731800mg/l0.5449600
6/1/2010818.2290.5428200mg/l0.7287300
7/1/2010410.0010.5507600mg/l0.4100000
8/1/2010517.6790.5655400mg/l0.5117500
9/1/2010597.6790.6027400mg/l0.5665400
10/1/2010413.5690.5712100mg/l0.3692800
11/1/2010397.1190.5257100mg/l0.3480700
12/1/2010408.5690.4574300mg/l0.3481100
1/1/2011423.30100.4596500mg/l0.3525200
2/1/2011380.8990.4368500mg/l0.3331700
3/1/2011988.1380.5019300mg/l0.9147600
4/1/2011491.4490.5149100mg/l0.4476200
5/1/2011544.8990.5395400mg/l0.4996400
6/1/2011885.3390.6190000mg/l0.8131300
7/1/2011617.3390.6513400mg/l0.5664600
8/1/2011549.60100.6794500mg/l0.5115800
9/1/2011626.6380.6192000mg/l0.6102200
10/1/2011478.80100.6171000mg/l0.4343900
11/1/2011451.7580.6015700mg/l0.3915900
12/1/2011384.5690.5181100mg/l0.3234600
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 247.50 876.00
Mean 105.87 60.29 38.03792
Low 38.90 0.00
No. of Samples 77 1,511

Five-year Trend Graph

      
1/1/200776.191676.1900000percent (%)68.1600000
2/1/200798.631687.4100000percent (%)97.4100000
3/1/200767.531680.7800000percent (%)62.6500000
4/1/200768.031677.6000000percent (%)64.3700000
5/1/200773.231676.7200000percent (%)62.9300000
6/1/200754.931673.0900000percent (%)42.4700000
7/1/200737.60366.6600000percent (%)36.7100000
8/1/200727.00154.7200000percent (%)27.0000000
9/1/200796.511359.5500000percent (%)88.6200000
11/1/200784.301360.0700000percent (%)61.5400000
12/1/200771.381263.3600000percent (%)66.5000000
1/1/200873.301370.5000000percent (%)66.1700000
2/1/2008129.141390.9300000percent (%)110.2200000
3/1/200881.301387.8800000percent (%)68.8800000
4/1/200861.35683.4600000percent (%)57.4100000
6/1/200856.60580.3400000percent (%)52.5600000
7/1/200880.68581.8100000percent (%)79.2900000
8/1/200898.82575.7500000percent (%)78.5700000
11/1/200873.59777.4200000percent (%)71.0200000
12/1/200879.29883.1000000percent (%)72.4900000
1/1/2009102.00888.4300000percent (%)99.7800000
2/1/200979.79783.6700000percent (%)75.2800000
3/1/200959.29978.7900000percent (%)54.2600000
4/1/200996.49981.7400000percent (%)86.8600000
5/1/200952.10478.1600000percent (%)49.6100000
6/1/200980.931178.4300000percent (%)69.0400000
7/1/200962.40871.8300000percent (%)58.9500000
8/1/200953.35267.4300000percent (%)52.8000000
9/1/200977.47970.4600000percent (%)71.1700000
10/1/200972.26966.4200000percent (%)68.4100000
11/1/200991.581073.0000000percent (%)87.9500000
12/1/200971.94971.5000000percent (%)71.4100000
1/1/201093.18876.6300000percent (%)91.8900000
2/1/201090.35882.8000000percent (%)89.9300000
3/1/201096.54885.9800000percent (%)95.8800000
4/1/201084.40888.0000000percent (%)77.3600000
6/1/201080.19788.9300000percent (%)77.6100000
8/1/201073.48683.6500000percent (%)69.7700000
9/1/201081.34579.8500000percent (%)69.9600000
10/1/2010109.18486.0500000percent (%)99.9500000
11/1/201078.02684.4400000percent (%)73.2700000
12/1/2010104.26589.2600000percent (%)100.3500000
1/1/2011124.07795.0600000percent (%)120.7800000
2/1/2011103.788100.1100000percent (%)95.8400000
3/1/2011103.558103.8100000percent (%)103.0200000
4/1/2011138.917108.7700000percent (%)137.4600000
7/1/2011114.168115.1000000percent (%)106.8500000
8/1/201180.618109.3100000percent (%)78.6700000
9/1/2011119.118113.2000000percent (%)115.3500000
10/1/2011159.168118.2600000percent (%)144.1000000
11/1/2011103.507115.3100000percent (%)101.0300000
12/1/201181.458109.6700000percent (%)79.8800000
Target
percent (%)
Threshold
38.00 percent (%)

Rainfall

Units: inches Year
2011
Historical
period of record
High 45.20 57.48
Mean 16.0705883321259
Low 7.46
No. of Samples 363 4,860

Five-year Trend Graph

      
1/1/20072.06312.0600000inches2.0600000
2/1/20072.73282.7300000inches2.7300000
3/1/20070.20310.2000000inches0.2000000
4/1/20072.57292.5700000inches2.5700000
5/1/20070.00310.0000000inches0.0000000
6/1/20073.10303.1000000inches3.1000000
7/1/20075.62315.6200000inches5.6200000
8/1/20073.72313.7200000inches3.7200000
9/1/200710.043010.0400000inches10.0400000
10/1/20071.12221.1200000inches1.1200000
11/1/20070.71300.7100000inches0.7100000
12/1/20070.64310.6400000inches0.6400000
1/1/20082.97312.9700000inches2.9700000
2/1/20081.46291.4600000inches1.4600000
3/1/20082.07312.0700000inches2.0700000
4/1/20082.72302.7200000inches2.7200000
5/1/20082.99312.9900000inches2.9900000
6/1/20084.30304.3000000inches4.3000000
7/1/20088.74318.7400000inches8.7400000
8/1/20089.36319.3600000inches9.3600000
9/1/20084.47304.4700000inches4.4700000
10/1/20082.35312.3500000inches2.3500000
11/1/20080.50300.5000000inches0.5000000
12/1/20081.90311.9000000inches1.9000000
1/1/20091.52311.5200000inches1.5200000
2/1/20090.58280.5800000inches0.5800000
3/1/20091.11311.1100000inches1.1100000
4/1/20091.05301.0500000inches1.0500000
5/1/20095.67315.6700000inches5.6700000
6/1/20096.33306.3300000inches6.3300000
7/1/20098.09318.0900000inches8.0900000
8/1/200910.803110.8000000inches10.8000000
9/1/20099.83309.8300000inches9.8300000
10/1/20092.70312.7000000inches2.7000000
11/1/20094.46304.4600000inches4.4600000
12/1/20093.05313.0500000inches3.0500000
1/1/20103.50313.5000000inches3.5000000
2/1/20102.34282.3400000inches2.3400000
3/1/20105.94315.9400000inches5.9400000
4/1/20102.13302.1300000inches2.1300000
5/1/20100.90310.9000000inches0.9000000
6/1/20105.56305.5600000inches5.5600000
7/1/20103.47313.4700000inches3.4700000
8/1/201012.023112.0200000inches12.0200000
9/1/20102.43302.4300000inches2.4300000
10/1/20100.01310.0100000inches0.0100000
11/1/20101.65301.6500000inches1.6500000
12/1/20101.14311.1400000inches1.1400000
1/1/20112.97312.9700000inches2.9700000
2/1/20110.60280.6000000inches0.6000000
3/1/20117.70317.7000000inches7.7000000
4/1/20111.45301.4500000inches1.4500000
5/1/20112.43312.4300000inches2.4300000
6/1/20115.47305.4700000inches5.4700000
7/1/20115.88315.8800000inches5.8800000
8/1/20119.76319.7600000inches9.7600000
9/1/20115.59305.5900000inches5.5900000
10/1/20111.97301.9700000inches1.9700000
11/1/20111.05301.0500000inches1.0500000
12/1/20110.33300.3300000inches0.3300000
Target
inches
Threshold
inches

Salinity

Units: PSS Year
2011
Historical
period of record
High 0.50 430.00
Mean 0.3 0.33 12.18753
Low 0.10 0.00
No. of Samples 76 1,249

Five-year Trend Graph

      
1/1/20070.33160.3300000PSS0.3300000
2/1/20070.33160.3300000PSS0.3300000
3/1/20070.37160.3400000PSS0.3600000
4/1/20070.27160.3300000PSS0.2400000
5/1/20071.58160.5800000PSS0.5100000
6/1/20070.40160.5500000PSS0.3900000
7/1/20070.2730.5400000PSS0.2600000
8/1/20070.2610.5300000PSS0.2600000
9/1/20070.33130.5200000PSS0.3200000
11/1/20070.37130.3300000PSS0.3700000
12/1/200736.18127.4800000PSS0.6500000
1/1/20080.42137.5100000PSS0.4100000
2/1/20080.33137.5300000PSS0.3200000
3/1/20080.37137.5300000PSS0.3600000
4/1/20080.3566.3400000PSS0.3500000
5/1/20080.4856.3600000PSS0.4800000
6/1/20081.8550.6300000PSS0.7400000
7/1/20080.3150.6200000PSS0.3000000
8/1/20080.3350.6200000PSS0.3300000
11/1/20080.4070.7200000PSS0.3900000
12/1/20080.3880.3600000PSS0.3700000
1/1/20090.3780.3700000PSS0.3600000
2/1/20090.4170.3900000PSS0.4000000
3/1/20090.4190.3900000PSS0.4000000
4/1/20090.5190.4100000PSS0.4500000
5/1/20096.0541.3600000PSS2.4200000
6/1/20091.76111.5900000PSS0.7000000
7/1/20090.3181.5800000PSS0.3100000
8/1/20090.2721.5500000PSS0.2600000
9/1/20090.3491.5400000PSS0.3300000
10/1/20090.3691.5200000PSS0.3500000
11/1/20090.47100.5900000PSS0.4100000
12/1/20090.3190.3400000PSS0.3100000
1/1/20100.3280.3500000PSS0.3100000
2/1/20100.3180.3500000PSS0.3000000
3/1/20100.3480.3500000PSS0.3200000
4/1/20100.3580.3500000PSS0.3400000
6/1/20100.3770.3400000PSS0.3600000
8/1/20100.2560.3300000PSS0.2400000
9/1/20100.2850.3100000PSS0.2700000
10/1/20100.2460.2900000PSS0.3500000
11/1/20100.3460.3000000PSS0.3300000
12/1/20100.3150.2800000PSS0.3000000
1/1/20110.3670.3000000PSS0.3500000
2/1/20110.3480.3100000PSS0.3300000
3/1/20110.1580.2900000PSS0.1400000
4/1/20110.3570.3100000PSS0.3500000
7/1/20110.3280.2900000PSS0.3100000
8/1/20110.2680.2700000PSS0.2500000
9/1/20110.2980.3100000PSS0.2900000
10/1/20110.3080.2900000PSS0.3000000
11/1/20110.3570.3000000PSS0.3400000
12/1/20110.4080.3200000PSS0.3900000

Turbidity

Units: NTU Year
2011
Historical
period of record
High 44.00 112.00
Mean 3.78 3.92 7.12804
Low 0.80 0.091
No. of Samples 108 1,647

Five-year Trend Graph

      
1/1/20074.36174.3600000NTU3.9800000
2/1/20073.79174.0800000NTU3.5400000
3/1/20073.32173.8200000NTU2.5900000
4/1/20072.81173.5700000NTU2.5100000
5/1/20072.81173.4200000NTU2.1400000
6/1/20074.22173.5500000NTU2.3700000
7/1/20073.68173.4400000NTU2.8800000
8/1/20075.30143.6900000NTU3.8900000
9/1/20074.86143.9500000NTU3.4700000
10/1/20073.8014.1100000NTU3.8000000
11/1/20073.07154.1600000NTU2.7600000
12/1/20072.96143.9500000NTU2.6900000
1/1/20082.85143.8100000NTU2.5500000
2/1/20084.01143.5900000NTU3.1900000
3/1/20083.08153.3000000NTU2.4800000
4/1/20084.09143.3400000NTU3.5400000
5/1/20084.53143.5900000NTU3.2100000
6/1/20085.73194.0500000NTU3.4200000
7/1/20085.29184.4600000NTU3.9900000
8/1/20085.02214.6200000NTU4.5400000
9/1/20085.43205.0200000NTU5.0700000
10/1/20084.53175.0900000NTU3.8400000
11/1/20084.5195.0900000NTU3.0000000
12/1/20086.3095.1800000NTU3.1500000
1/1/20092.8694.7800000NTU2.5100000
2/1/20092.7394.3900000NTU2.1300000
3/1/20093.57104.0800000NTU3.1000000
4/1/20093.1283.8500000NTU2.6600000
5/1/20091.2013.3000000NTU1.2000000
6/1/20092.7992.7100000NTU2.4100000
7/1/20094.6193.0000000NTU3.6400000
8/1/20097.17103.7400000NTU5.2700000
9/1/20093.9283.8000000NTU3.4700000
10/1/20095.6494.2200000NTU4.9000000
11/1/20093.2894.5700000NTU3.0400000
12/1/20095.7395.0600000NTU5.2100000
1/1/20104.9395.1100000NTU4.5600000
2/1/20106.9795.0800000NTU5.8600000
3/1/20105.27105.3000000NTU4.3900000
4/1/20105.4085.2600000NTU4.8700000
5/1/20104.6895.5000000NTU3.0900000
6/1/20102.9295.0300000NTU2.5700000
7/1/20109.7015.8200000NTU9.7000000
8/1/20107.4095.9000000NTU6.0300000
9/1/20106.7496.1400000NTU5.6900000
10/1/20103.9095.8900000NTU3.5300000
11/1/20103.1695.6400000NTU2.5600000
12/1/20104.2295.8500000NTU3.4800000
1/1/20114.17104.9300000NTU3.8200000
2/1/20112.7894.1600000NTU2.5400000
3/1/201119.8886.3500000NTU16.1500000
4/1/20114.8796.5100000NTU4.4300000
5/1/20113.1796.5200000NTU2.8600000
6/1/20113.2296.3500000NTU2.9400000
7/1/20113.9696.3100000NTU3.4100000
8/1/20113.84106.4900000NTU3.4000000
9/1/20116.1484.2000000NTU5.2900000
10/1/20114.79104.1900000NTU4.5200000
11/1/20112.7984.1200000NTU2.5800000
12/1/20112.5794.0200000NTU2.3900000
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:
  • 1947
Pass

Chlorophyll a

Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 0.0 0.1
Mean 0.0062 0.0081 0.01208384
Low 0.0003 0.0003
No. of Samples 12 113

Five-year Trend Graph

     
1/1/20074.6620.0046600mg/l0.0046400
2/1/20071.4920.0030800mg/l0.0014800
3/1/20072.3420.0028300mg/l0.0022100
4/1/20073.0720.0028900mg/l0.0030600
5/1/20072.5720.0028300mg/l0.0025400
6/1/200716.3320.0050800mg/l0.0111100
7/1/200742.9020.0114500mg/l0.0428500
8/1/200716.8620.0140100mg/l0.0145400
9/1/200756.7520.0230800mg/l0.0377800
11/1/200713.5020.0292700mg/l0.0134500
12/1/200715.7520.0291500mg/l0.0157000
1/1/20087.2620.0220200mg/l0.0069500
2/1/20083.1220.0192800mg/l0.0031100
3/1/20083.5020.0086300mg/l0.0034200
4/1/20084.0920.0078700mg/l0.0040800
5/1/20087.6620.0069000mg/l0.0054900
6/1/200818.6220.0073800mg/l0.0141700
7/1/200817.8520.0091400mg/l0.0177600
8/1/200818.0520.0116300mg/l0.0177200
9/1/200819.4520.0142900mg/l0.0194000
10/1/200822.7020.0173900mg/l0.0227000
11/1/200816.7010.0189000mg/l0.0167000
1/1/20092.9010.0159600mg/l0.0029000
2/1/20091.5610.0126600mg/l0.0015600
3/1/20098.4710.0104700mg/l0.0084700
4/1/20094.6110.0068500mg/l0.0046100
6/1/200919.0010.0073100mg/l0.0190000
7/1/200921.5010.0110300mg/l0.0215000
8/1/200918.8010.0144800mg/l0.0188000
9/1/20098.9910.0145800mg/l0.0089900
10/1/200926.6010.0189800mg/l0.0266000
11/1/20094.1910.0165100mg/l0.0041900
12/1/20097.1310.0145400mg/l0.0071300
1/1/20108.6810.0124000mg/l0.0086800
3/1/20103.3410.0099900mg/l0.0033400
4/1/20107.4710.0061600mg/l0.0074700
5/1/201027.2010.0107600mg/l0.0272000
6/1/20106.8710.0107100mg/l0.0068700
8/1/201017.5010.0124800mg/l0.0175000
9/1/201010.7010.0139500mg/l0.0107000
10/1/20105.0310.0134600mg/l0.0050300
11/1/20107.6310.0095500mg/l0.0076300
12/1/20102.8710.0087500mg/l0.0028700
1/1/20110.2510.0073300mg/l0.0002500
2/1/20115.5710.0053400mg/l0.0055700
3/1/20114.8110.0043600mg/l0.0048100
4/1/20118.8410.0050000mg/l0.0088400
5/1/20115.7910.0046900mg/l0.0057900
6/1/20117.9110.0055300mg/l0.0079100
7/1/201119.4010.0087200mg/l0.0194000
8/1/20119.5310.0093800mg/l0.0095300
9/1/201113.4010.0108100mg/l0.0134000
10/1/20116.5910.0104400mg/l0.0065900
11/1/20119.0310.0109800mg/l0.0090300
12/1/20118.4410.0110700mg/l0.0084400
Target
mg/l
Threshold
0.011 mg/l
Pass

Nitrogen, Total

Trend analysis shows a weak decreasing trend.
Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 1.8 8.9
Mean 0.86 1.0507 1.60556075
Low 0.645 0.129
No. of Samples 12 172

Five-year Trend Graph

     
1/1/20071046.0021.0460000mg/l1.0440400
2/1/2007955.5021.0007500mg/l0.9539400
3/1/2007510.7520.8374200mg/l0.4919600
4/1/2007457.5020.7424400mg/l0.4265200
5/1/2007500.2520.6940000mg/l0.4676100
6/1/2007442.5020.6520800mg/l0.3122900
7/1/2007974.0020.6400800mg/l0.9630000
8/1/2007745.5020.6050800mg/l0.7454700
9/1/2007643.5020.6272100mg/l0.5218600
11/1/2007358.7520.6328500mg/l0.3456000
12/1/2007752.5020.6948500mg/l0.7349700
1/1/2008703.0020.6406500mg/l0.6689900
2/1/2008784.0020.6483500mg/l0.7769400
3/1/2008363.0020.5922500mg/l0.3452900
4/1/2008587.0020.5913800mg/l0.5074900
5/1/2008370.0020.5932500mg/l0.3578600
6/1/2008616.0020.5705000mg/l0.5455800
7/1/20081055.5020.6292500mg/l1.0552800
8/1/2008859.0020.6417500mg/l0.8456200
9/1/20081008.5020.7493300mg/l1.0071800
10/1/2008702.0020.7685000mg/l0.6283600
11/1/2008299.0010.7566700mg/l0.2990000
1/1/2009355.0010.6447000mg/l0.3550000
2/1/20091002.0010.6733000mg/l1.0020000
3/1/2009279.0010.5274000mg/l0.2790000
4/1/2009521.0010.4912000mg/l0.5210000
6/1/2009636.0010.5586000mg/l0.6360000
7/1/20091089.0010.7054000mg/l1.0890000
8/1/2009849.0010.6748000mg/l0.8490000
9/1/2009555.0010.7300000mg/l0.5550000
10/1/2009880.0010.8018000mg/l0.8800000
11/1/2009647.0010.7760000mg/l0.6470000
12/1/20091415.0010.9058300mg/l1.4150000
1/1/20101185.0010.9218300mg/l1.1850000
3/1/2010687.0010.9628000mg/l0.6870000
4/1/2010720.0010.9308000mg/l0.7200000
5/1/2010823.0010.9660000mg/l0.8230000
6/1/2010746.0010.8322000mg/l0.7460000
8/1/20101230.0010.8412000mg/l1.2300000
9/1/20101382.0010.9802000mg/l1.3820000
10/1/2010735.0010.9832000mg/l0.7350000
11/1/2010712.0010.9610000mg/l0.7120000
12/1/2010595.0010.9308000mg/l0.5950000
1/1/2011914.0010.9280000mg/l0.9140000
2/1/2011726.0010.8440000mg/l0.7260000
3/1/2011935.0010.7695000mg/l0.9350000
4/1/2011903.0010.7975000mg/l0.9030000
5/1/2011757.0010.8050000mg/l0.7570000
6/1/2011696.0010.8218300mg/l0.6960000
7/1/2011690.0010.7845000mg/l0.6900000
8/1/2011914.0010.8158300mg/l0.9140000
9/1/20111761.0010.9535000mg/l1.7610000
10/1/20111049.0010.9778300mg/l1.0490000
11/1/2011645.0010.9591700mg/l0.6450000
12/1/2011738.0010.9661700mg/l0.7380000
Pass

Phosphorus, Total

Trend analysis shows a weak decreasing trend.
Score: Pass
Units: mg/l Year
2011
Historical
period of record
High 0.5 2.2
Mean 0.2836 0.3478 0.29541026
Low 0.194 0.09
No. of Samples 12 180

Five-year Trend Graph

     
1/1/2007244.0020.2440000mg/l0.2403600
2/1/2007232.5020.2382500mg/l0.2323100
3/1/2007233.0020.2365000mg/l0.2246000
4/1/2007239.5020.2372500mg/l0.2295000
5/1/2007374.5020.2647000mg/l0.3442300
6/1/2007348.0020.2785800mg/l0.2752000
7/1/2007640.5020.3446700mg/l0.6086400
8/1/2007348.5020.3640000mg/l0.3449700
9/1/2007344.0020.3825000mg/l0.3172500
11/1/2007219.0020.3800000mg/l0.2149300
12/1/2007246.5020.3597000mg/l0.2367900
1/1/2008192.0020.2700000mg/l0.1820500
2/1/2008243.0020.2489000mg/l0.2401700
3/1/2008208.5020.2218000mg/l0.1694400
4/1/2008277.0020.2310000mg/l0.2217500
5/1/2008291.0020.2430000mg/l0.2045300
6/1/20081115.5020.3878300mg/l0.8216300
7/1/2008392.5020.4212500mg/l0.3924700
8/1/2008291.5020.4293300mg/l0.2861700
9/1/2008313.5020.4468300mg/l0.3133200
10/1/2008298.5020.4504200mg/l0.2859900
11/1/2008142.0010.4255800mg/l0.1420000
1/1/2009194.0010.2479000mg/l0.1940000
2/1/2009250.0010.2396000mg/l0.2500000
3/1/2009244.0010.2257000mg/l0.2440000
4/1/2009180.0010.2020000mg/l0.1800000
6/1/2009251.0010.2238000mg/l0.2510000
7/1/2009361.0010.2572000mg/l0.3610000
8/1/2009319.0010.2710000mg/l0.3190000
9/1/2009220.0010.2662000mg/l0.2200000
10/1/2009259.0010.2820000mg/l0.2590000
11/1/2009107.0010.2528300mg/l0.1070000
12/1/2009251.0010.2528300mg/l0.2510000
1/1/2010210.0010.2276700mg/l0.2100000
3/1/2010135.0010.1924000mg/l0.1350000
4/1/2010268.0010.1942000mg/l0.2680000
5/1/2010408.0010.2544000mg/l0.4080000
6/1/2010352.0010.2746000mg/l0.3520000
8/1/2010433.0010.3192000mg/l0.4330000
9/1/2010372.0010.3666000mg/l0.3720000
10/1/2010189.0010.3508000mg/l0.1890000
11/1/2010184.0010.3060000mg/l0.1840000
12/1/2010183.0010.2722000mg/l0.1830000
1/1/2011251.0010.2686700mg/l0.2510000
2/1/2011197.0010.2293300mg/l0.1970000
3/1/2011370.0010.2290000mg/l0.3700000
4/1/2011327.0010.2520000mg/l0.3270000
5/1/2011308.0010.2726700mg/l0.3080000
6/1/2011212.0010.2775000mg/l0.2120000
7/1/2011408.0010.3036700mg/l0.4080000
8/1/2011379.0010.3340000mg/l0.3790000
9/1/2011476.0010.3516700mg/l0.4760000
10/1/2011234.0010.3361700mg/l0.2340000
11/1/2011194.0010.3171700mg/l0.1940000
12/1/2011207.0010.3163300mg/l0.2070000
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 129.5 530.0
Mean 69.22 67.3 40.93162
Low 32.80 26.80
No. of Samples 8 187

Five-year Trend Graph

     
1/1/200777.05277.0500000percent (%)76.7100000
2/1/2007103.90290.4800000percent (%)102.8100000
3/1/200765.10282.0200000percent (%)64.0900000
4/1/200759.65276.4300000percent (%)58.3600000
5/1/200757.95272.7300000percent (%)54.4400000
6/1/200762.00270.9400000percent (%)61.9300000
9/1/2007101.15270.1900000percent (%)101.1500000
11/1/2007157.352106.8300000percent (%)155.6700000
12/1/200757.202105.2300000percent (%)56.6400000
1/1/2008101.402104.2800000percent (%)101.3800000
2/1/200883.552100.1300000percent (%)83.5400000
3/1/200856.65291.2300000percent (%)54.3300000
11/1/200875.00175.0000000percent (%)75.0000000
1/1/200992.00183.5000000percent (%)92.0000000
2/1/200967.20178.0700000percent (%)67.2000000
3/1/200957.50172.9300000percent (%)57.5000000
4/1/200971.60172.6600000percent (%)71.6000000
6/1/200964.70170.6000000percent (%)64.7000000
7/1/200941.10160.4200000percent (%)41.1000000
9/1/2009210.00196.8500000percent (%)210.0000000
10/1/200926.80185.6500000percent (%)26.8000000
12/1/200957.60183.8800000percent (%)57.6000000
1/1/201087.80195.5500000percent (%)87.8000000
3/1/201097.10167.3300000percent (%)97.1000000
4/1/201068.30177.7000000percent (%)68.3000000
6/1/201082.80184.0000000percent (%)82.8000000
8/1/201061.10177.3300000percent (%)61.1000000
9/1/201059.10167.8300000percent (%)59.1000000
10/1/201084.40171.8500000percent (%)84.4000000
12/1/201095.50175.0300000percent (%)95.5000000
2/1/201174.40178.3500000percent (%)74.4000000
3/1/201147.60175.4800000percent (%)47.6000000
4/1/201185.50175.7500000percent (%)85.5000000
7/1/201171.00169.6300000percent (%)71.0000000
8/1/201132.80159.2300000percent (%)32.8000000
9/1/201171.60165.2300000percent (%)71.6000000
10/1/2011129.50176.2300000percent (%)129.5000000
11/1/201180.60177.1000000percent (%)80.6000000
Target
percent (%)
Threshold
56.00 percent (%)

Oysters

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

Five-year Trend Graph

     
1/1/200620.59120.5900000%20.5900000
1/1/200784.35184.3500000%84.3500000
1/1/200875.36175.3600000%75.3600000
1/1/200966.37166.3700000%66.3700000
1/1/201069.94169.9400000%69.9400000
1/1/201145.53145.5300000%45.5300000

Rainfall

Units: inches Year
2011
Historical
period of record
High 45.2 57.5
Mean 16.0705883321259
Low 7.46
No. of Samples 363 4,860

Five-year Trend Graph

     
1/1/20072.06312.0600000inches2.0600000
2/1/20072.73282.7300000inches2.7300000
3/1/20070.20310.2000000inches0.2000000
4/1/20072.57292.5700000inches2.5700000
5/1/20070.00310.0000000inches0.0000000
6/1/20073.10303.1000000inches3.1000000
7/1/20075.62315.6200000inches5.6200000
8/1/20073.72313.7200000inches3.7200000
9/1/200710.043010.0400000inches10.0400000
10/1/20071.12221.1200000inches1.1200000
11/1/20070.71300.7100000inches0.7100000
12/1/20070.64310.6400000inches0.6400000
1/1/20082.97312.9700000inches2.9700000
2/1/20081.46291.4600000inches1.4600000
3/1/20082.07312.0700000inches2.0700000
4/1/20082.72302.7200000inches2.7200000
5/1/20082.99312.9900000inches2.9900000
6/1/20084.30304.3000000inches4.3000000
7/1/20088.74318.7400000inches8.7400000
8/1/20089.36319.3600000inches9.3600000
9/1/20084.47304.4700000inches4.4700000
10/1/20082.35312.3500000inches2.3500000
11/1/20080.50300.5000000inches0.5000000
12/1/20081.90311.9000000inches1.9000000
1/1/20091.52311.5200000inches1.5200000
2/1/20090.58280.5800000inches0.5800000
3/1/20091.11311.1100000inches1.1100000
4/1/20091.05301.0500000inches1.0500000
5/1/20095.67315.6700000inches5.6700000
6/1/20096.33306.3300000inches6.3300000
7/1/20098.09318.0900000inches8.0900000
8/1/200910.803110.8000000inches10.8000000
9/1/20099.83309.8300000inches9.8300000
10/1/20092.70312.7000000inches2.7000000
11/1/20094.46304.4600000inches4.4600000
12/1/20093.05313.0500000inches3.0500000
1/1/20103.50313.5000000inches3.5000000
2/1/20102.34282.3400000inches2.3400000
3/1/20105.94315.9400000inches5.9400000
4/1/20102.13302.1300000inches2.1300000
5/1/20100.90310.9000000inches0.9000000
6/1/20105.56305.5600000inches5.5600000
7/1/20103.47313.4700000inches3.4700000
8/1/201012.023112.0200000inches12.0200000
9/1/20102.43302.4300000inches2.4300000
10/1/20100.01310.0100000inches0.0100000
11/1/20101.65301.6500000inches1.6500000
12/1/20101.14311.1400000inches1.1400000
1/1/20112.97312.9700000inches2.9700000
2/1/20110.60280.6000000inches0.6000000
3/1/20117.70317.7000000inches7.7000000
4/1/20111.45301.4500000inches1.4500000
5/1/20112.43312.4300000inches2.4300000
6/1/20115.47305.4700000inches5.4700000
7/1/20115.88315.8800000inches5.8800000
8/1/20119.76319.7600000inches9.7600000
9/1/20115.59305.5900000inches5.5900000
10/1/20111.97301.9700000inches1.9700000
11/1/20111.05301.0500000inches1.0500000
12/1/20110.33300.3300000inches0.3300000
Target
inches
Threshold
inches

Salinity

Units: PSS Year
2011
Historical
period of record
High 29.6 35.3
Mean 17.49 9.47 10.0107
Low 2.25 0.00
No. of Samples 8 166

Five-year Trend Graph

     
1/1/20074.5824.5800000PSS1.8000000
2/1/20079.7127.1500000PSS2.7600000
3/1/200720.39211.5600000PSS17.9300000
4/1/200713.75212.1100000PSS3.4900000
5/1/200728.51215.3900000PSS27.6700000
6/1/200722.24216.5300000PSS18.8700000
9/1/200715.71220.0500000PSS11.8600000
11/1/200710.49216.1500000PSS5.8300000
12/1/200715.37213.8600000PSS11.5400000
1/1/200820.88215.6100000PSS16.8200000
2/1/20083.47213.1800000PSS1.6700000
3/1/200819.76213.9900000PSS15.9500000
11/1/200827.83127.8300000PSS27.8300000
1/1/200929.83128.8300000PSS29.8300000
2/1/20090.37119.3400000PSS0.3700000
3/1/200934.19123.0600000PSS34.1900000
4/1/200933.92125.2300000PSS33.9200000
6/1/200930.41125.7400000PSS30.4100000
7/1/200913.99122.5800000PSS13.9900000
9/1/200917.55123.9700000PSS17.5500000
10/1/200910.45118.1000000PSS10.4500000
11/1/200927.04119.8900000PSS27.0400000
12/1/20099.37115.6800000PSS9.3700000
1/1/201028.13118.5100000PSS28.1300000
3/1/201028.36120.6700000PSS28.3600000
4/1/201027.51124.0800000PSS27.5100000
6/1/201029.31128.3300000PSS29.3100000
8/1/20100.36121.3900000PSS0.3600000
9/1/20104.45115.4100000PSS4.4500000
10/1/20100.2718.6000000PSS0.2700000
12/1/201024.2317.3300000PSS24.2300000
2/1/201123.65113.1500000PSS23.6500000
3/1/201123.65117.9500000PSS23.6500000
4/1/201116.41121.9900000PSS16.4100000
7/1/201124.49122.0500000PSS24.4900000
8/1/201129.63123.5500000PSS29.6300000
9/1/20112.25118.2000000PSS2.2500000
10/1/201123.44119.9500000PSS23.4400000
11/1/201124.91120.9400000PSS24.9100000

Turbidity

Units: NTU Year
2011
Historical
period of record
High 8.5 18.0
Mean 3.63 3.6 2.35515
Low 2.20 1.30
No. of Samples 12 202

Five-year Trend Graph

     
1/1/20073.9023.9000000NTU3.7900000
2/1/20073.1523.5300000NTU3.1500000
3/1/20072.1523.0700000NTU2.1500000
4/1/20072.7022.9800000NTU2.7000000
5/1/20071.8022.7400000NTU1.7900000
6/1/20072.4022.6800000NTU2.3500000
7/1/20074.8022.8300000NTU4.7800000
8/1/20075.7523.2700000NTU5.7100000
9/1/20073.9523.5700000NTU3.9500000
11/1/20072.5023.8800000NTU2.5000000
12/1/20072.7023.9400000NTU2.6900000
1/1/20082.4023.4600000NTU2.2200000
2/1/20082.8522.8800000NTU2.8500000
3/1/20081.7022.4300000NTU1.6500000
4/1/20082.1022.3800000NTU2.1000000
5/1/20082.0922.3100000NTU2.0700000
6/1/20083.3022.4100000NTU3.2900000
7/1/20083.4022.5700000NTU3.3900000
8/1/20082.5022.5200000NTU2.4900000
9/1/20085.1023.0800000NTU5.1000000
10/1/20082.9023.2200000NTU2.8900000
11/1/20083.0013.3700000NTU3.0000000
1/1/20091.8613.0700000NTU1.8600000
2/1/20094.2013.4100000NTU4.2000000
3/1/20091.7812.7500000NTU1.7800000
4/1/20092.1012.5900000NTU2.1000000
6/1/20092.3012.4500000NTU2.3000000
7/1/20092.4012.5600000NTU2.4000000
8/1/20092.5012.2200000NTU2.5000000
9/1/20092.4012.3400000NTU2.4000000
10/1/20093.7012.6600000NTU3.7000000
11/1/20092.5012.6300000NTU2.5000000
12/1/20094.3012.9700000NTU4.3000000
1/1/20103.4013.1300000NTU3.4000000
3/1/20102.8013.3400000NTU2.8000000
4/1/20101.6012.9200000NTU1.6000000
5/1/20104.0013.2200000NTU4.0000000
6/1/20102.4012.8400000NTU2.4000000
8/1/20108.5013.8600000NTU8.5000000
9/1/20105.1014.3200000NTU5.1000000
10/1/20106.6015.3200000NTU6.6000000
11/1/20104.6015.4400000NTU4.6000000
12/1/20102.4015.4400000NTU2.4000000
1/1/20115.2015.4000000NTU5.2000000
2/1/20113.5014.5700000NTU3.5000000
3/1/20118.5015.1300000NTU8.5000000
4/1/20112.5014.4500000NTU2.5000000
5/1/20112.8014.1500000NTU2.8000000
6/1/20113.6014.3500000NTU3.6000000
7/1/20113.0013.9800000NTU3.0000000
8/1/20113.3013.9500000NTU3.3000000
9/1/20115.5013.4500000NTU5.5000000
10/1/20114.2013.7300000NTU4.2000000
11/1/20112.2013.6300000NTU2.2000000
12/1/20112.7013.4800000NTU2.7000000
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 PH3 2011 128 107 235 46

Impervious Features

Phillippi Creek 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 Phillippi Creek Basin is covered by impervious surfaces.

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Land Use / Land Cover

Phillippi Creek 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 »

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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.