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 |
---|---|---|---|---|---|---|
JAN-MAR 2024 | 555 ug/l | 410 ug/l | 1 | 1 | ||
OCT-DEC 2023 | 929 ug/l | 389 ug/l | 3 | 4 | ||
JUL-SEP 2023 | 957 ug/l | 368 ug/l | 24 | 53 | ||
APR-JUN 2023 | 1,016 ug/l | 303 ug/l | 24 | 62 | ||
JAN-MAR 2023 | 786 ug/l | 273 ug/l | 23 | 62 | ||
OCT-DEC 2022 | 965 ug/l | 298 ug/l | 28 | 64 | ||
JUL-SEP 2022 | 1,081 ug/l | 376 ug/l | 3 | 5 | ||
APR-JUN 2022 | 858 ug/l | 353 ug/l | 21 | 46 | ||
JAN-MAR 2022 | 728 ug/l | 275 ug/l | 19 | 51 | ||
Five Year Seasonal Graph | ||||||
Five Year Graph of All Samples |
Season | Total Nitrogen | Nitrate (NO3) | Total Phosphorus | Orthophosphate | Number of Sample Stations | Number of Samples |
---|---|---|---|---|---|---|
JUL-SEP 2023 | 1,102 ug/l | 291 ug/l | 2 | 5 | ||
APR-JUN 2023 | 824 ug/l | 185 ug/l | 2 | 6 | ||
JAN-MAR 2023 | 1,021 ug/l | 173 ug/l | 2 | 6 | ||
OCT-DEC 2022 | 1,027 ug/l | 263 ug/l | 2 | 6 | ||
APR-JUN 2022 | 783 ug/l | 178 ug/l | 2 | 6 | ||
JAN-MAR 2022 | 792 ug/l | 180 ug/l | 2 | 6 | ||
Five Year Seasonal Graph | ||||||
Five Year Graph of All Samples |
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 Manatee River Watershed. Learn More about Stream Flow »
River | Flows Whole River Range | Flows Data by Segment | Levels Whole River Range | Levels Data By Segment |
---|---|---|---|---|
Gamble Creek |
Average river flow is slower than it has been historically. |
Average water levels are lower than they have been historically. |
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Upper Manatee River |
Average river flow is slower than it has been historically. |
Average water levels are higher than they have been historically. |
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Braden River |
Average river flow is slower than it has been historically. |
Average water levels are higher than they have been historically. |
Source(s): Not Available
Source(s): Not Available