Explore general as well as scientific information about the movement, chemistry and biology of area surface and ground water environments.
The following data are summarized as seasonal average values for lake and river sampling locations located within the watershed. While these data are useful to serve as a general picture of watershed health, these data must be viewed with caution because these samples have been taken from ecologically different water resources.
Season | Total Nitrogen | Nitrate (NO3) | Total Phosphorus | Orthophosphate | Number of Sample Stations | Number of Samples |
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JAN-MAR 2025 | 1,116 ug/l |
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260 ug/l |
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10 | 11 |
OCT-DEC 2024 | 1,361 ug/l |
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389 ug/l |
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13 | 33 |
JUL-SEP 2024 | 1,512 ug/l |
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402 ug/l |
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17 | 37 |
APR-JUN 2024 | 1,068 ug/l |
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240 ug/l |
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18 | 43 |
JAN-MAR 2024 | 1,140 ug/l |
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227 ug/l |
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32 | 70 |
OCT-DEC 2023 | 1,062 ug/l |
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272 ug/l |
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23 | 54 |
JUL-SEP 2023 | 1,193 ug/l |
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369 ug/l |
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22 | 57 |
APR-JUN 2023 | 1,126 ug/l |
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299 ug/l |
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21 | 53 |
JAN-MAR 2023 | 1,031 ug/l |
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233 ug/l |
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21 | 53 |
Five Year Seasonal Graph |
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Five Year Graph of All Samples |
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Season | Total Nitrogen | Nitrate (NO3) | Total Phosphorus | Orthophosphate | Number of Sample Stations | Number of Samples |
---|---|---|---|---|---|---|
JAN-MAR 2024 | 1,004 ug/l |
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205 ug/l |
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1 | 2 |
OCT-DEC 2023 | 1,421 ug/l |
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313 ug/l |
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8 | 12 |
JUL-SEP 2023 | 1,591 ug/l |
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560 ug/l |
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8 | 14 |
APR-JUN 2023 | 1,271 ug/l |
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237 ug/l |
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8 | 16 |
JAN-MAR 2023 | 1,067 ug/l |
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207 ug/l |
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5 | 11 |
Five Year Seasonal Graph |
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Five Year Graph of All Samples |
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Southwest Florida Water Management District calculates the Aquifer Resource Indicator (ARI) for their three groundwater regions each month. The ARI was created to provide the public with a gauge of groundwater levels in their area, so they can develop an understanding of the severity and cycles of drought and recovery. The three regions include: North (Citrus, Hernando, Lake, Levy, Marion, and Sumter counties), Central (Hillsborough, Pasco, Pinellas, and Polk counties), and South (Charlotte, DeSoto, Hardee, Highlands, Manatee, and Sarasota counties). Learn More about the Aquifer Resource Indicator >>
To determine the ARI for a region, each well is compared weekly to its respective low-normal value and the difference is calculated. The weekly differences are reduced to a monthly value for all monitoring wells within a region, and the resulting ARI value represents how far water levels in the aquifer must rise or fall to reach their respective low-normal values.
Stream level and flow data for the Myakka River Watershed. Learn More about Stream Flow »
River | Flows Whole River Range | Flows Data by Segment | Levels Whole River Range | Levels Data By Segment |
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Big Slough |
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Deer Prairie Slough |
NO DATA Recent river flow data is unavailable. |
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Howard Creek |
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Cocoplum Waterway |
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Myakka River |
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Coker Creek |
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Long Creek |
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Maple Creek |
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Ogleby Creek |
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Taylor Creek |
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Source(s): Not Available
Source(s): Not Available