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 2022 | 723 ug/l |
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259 ug/l |
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18 | 48 |
OCT-DEC 2021 | 1,056 ug/l |
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317 ug/l |
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21 | 50 |
JUL-SEP 2021 | 1,113 ug/l |
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325 ug/l |
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22 | 51 |
APR-JUN 2021 | 744 ug/l |
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340 ug/l |
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21 | 26 |
JAN-MAR 2021 | 789 ug/l |
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242 ug/l |
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22 | 61 |
OCT-DEC 2020 | 1,057 ug/l |
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316 ug/l |
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21 | 27 |
JUL-SEP 2020 | 1,039 ug/l |
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260 ug/l |
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25 | 47 |
APR-JUN 2020 | 883 ug/l |
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275 ug/l |
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26 | 62 |
JAN-MAR 2020 | 692 ug/l |
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271 ug/l |
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20 | 54 |
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 |
---|---|---|---|---|---|---|
JAN-MAR 2022 | 792 ug/l |
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180 ug/l |
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2 | 6 |
OCT-DEC 2021 | 983 ug/l |
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155 ug/l |
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5 | 9 |
JUL-SEP 2021 | 1,058 ug/l |
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226 ug/l |
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5 | 8 |
APR-JUN 2021 | 1,002 ug/l |
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176 ug/l |
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5 | 5 |
JAN-MAR 2021 | 800 ug/l |
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191 ug/l |
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2 | 6 |
OCT-DEC 2020 | 1,036 ug/l |
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234 ug/l |
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4 | 5 |
JUL-SEP 2020 | 1,030 ug/l |
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229 ug/l |
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5 | 7 |
APR-JUN 2020 | 811 ug/l |
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157 ug/l |
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5 | 9 |
JAN-MAR 2020 | 808 ug/l |
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207 ug/l |
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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 |
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Upper Manatee River |
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Braden River |
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Source(s): Not Available
Source(s): Not Available