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Manatee River Watershed

Manatee River Watershed

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Description

Explore general as well as scientific information about the movement, chemistry and biology of area surface and ground water environments.

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Map Legend

Water Quality sampling site
Hydrology sampling site
Closest Rainfall site
Rainfall sampling site
Multi-type sampling site
Other sampling site
 

Water Quality

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.

Rivers:
Samples from most rivers located in this watershed are averaged as part of these data summaries.
Season Total Nitrogen Nitrate (NO3) Total Phosphorus Orthophosphate Number of Sample Stations Number of Samples
JUL-SEP 2022 1,103 ug/l No Data Available 385 ug/l No Data Available 1 2
APR-JUN 2022 871 ug/l No Data Available 334 ug/l No Data Available 21 47
JAN-MAR 2022 738 ug/l No Data Available 251 ug/l No Data Available 19 52
OCT-DEC 2021 1,045 ug/l No Data Available 308 ug/l No Data Available 22 53
JUL-SEP 2021 1,103 ug/l No Data Available 317 ug/l No Data Available 25 55
APR-JUN 2021 747 ug/l No Data Available 331 ug/l No Data Available 22 27
JAN-MAR 2021 786 ug/l No Data Available 233 ug/l No Data Available 23 64
Five Year Seasonal Graph
Five Year Graph of All Samples

Source(s): FDEP Historic Data from Legacy STORET, Lower watershed program (LWP), FDEP Watershed Monitoring Section, Manatee County Environmental Management Sampling Data, SWFWMD Water Quality Sampling Data, FDEP Southwest Regional Operations Center, FDEP, Water Quality Standards and Special Projects (Florida), USGS National Water Information System, FDEP Watershed Monitoring Section, Florida LAKEWATCH, Manatee County Environmental Management Sampling Data, Enviro-Audit, Southwest Florida Water Management District, FDEP - Southwest Regional Operations Center, FDEP - Watershed Assessment Section

Lakes:
Samples from most lakes located in this watershed are averaged as part of these data summaries.
Season Total Nitrogen Nitrate (NO3) Total Phosphorus Orthophosphate Number of Sample Stations Number of Samples
APR-JUN 2022 783 ug/l No Data Available 178 ug/l No Data Available 2 6
JAN-MAR 2022 792 ug/l No Data Available 180 ug/l No Data Available 2 6
OCT-DEC 2021 983 ug/l No Data Available 155 ug/l No Data Available 5 9
JUL-SEP 2021 1,058 ug/l No Data Available 226 ug/l No Data Available 5 8
APR-JUN 2021 932 ug/l No Data Available 193 ug/l No Data Available 6 6
JAN-MAR 2021 800 ug/l No Data Available 191 ug/l No Data Available 2 6
Five Year Seasonal Graph
Five Year Graph of All Samples

Source(s): Lower watershed program (LWP), FDEP Watershed Monitoring Section, Manatee County Environmental Management Sampling Data, USGS National Water Information System, FDEP Watershed Monitoring Section, Florida LAKEWATCH, Manatee County Environmental Management Sampling Data, FDEP - Watershed Assessment Section

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    Groundwater Quantity: Aquifer Resource Indicator

    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.

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    Source: SWFWMD Hydrologic Data Section Data


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      Stream Flow and Levels

      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
      Braden River In the past 30 days
      down Average river flow is slower than it has been historically.
      In the past 30 days
      up Average water levels are higher than they have been historically.
      Gamble Creek In the past 30 days
      down Average river flow is slower than it has been historically.
      In the past 30 days
      down Average water levels are lower than they have been historically.
      Upper Manatee River In the past 30 days
      down Average river flow is slower than it has been historically.
      In the past 30 days
      up Average water levels are higher than they have been historically.

      Source(s): Not Available

      Source(s): Not Available
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