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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| 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 |
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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 Gulf of Mexico 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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Source(s): Not Available
Source(s): Not Available