Seminole County Water Atlas


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Saint Johns Watershed

Saint Johns 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 2023 1,250 ug/l No Data Available 83 ug/l No Data Available 1 1
APR-JUN 2023 1,229 ug/l No Data Available 75 ug/l No Data Available 4 6
JAN-MAR 2023 1,358 ug/l No Data Available 82 ug/l No Data Available 4 11
OCT-DEC 2022 1,421 ug/l No Data Available 170 ug/l No Data Available 3 8
JUL-SEP 2022 1,196 ug/l No Data Available 81 ug/l No Data Available 4 11
APR-JUN 2022 1,298 ug/l No Data Available 76 ug/l No Data Available 4 11
JAN-MAR 2022 1,245 ug/l No Data Available 55 ug/l No Data Available 4 11
Five Year Seasonal Graph No Data Available No Data Available
Five Year Graph of All Samples No Data Available No Data Available

Source(s): FDEP Historic Data from Legacy STORET, Seminole County Legacy Storet Data, Volusia County Water Quality Data, SJRWMD Water Quality Data, FDEP Central Regional Operations Center, FDEP Watershed Monitoring Section, FDEP - Central Regional Operations Center, FDEP Watershed Monitoring Section, Florida LAKEWATCH, St. Johns River Water Management District

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
No Data Available
Five Year Seasonal Graph No Data Available No Data Available No Data Available No Data Available
Five Year Graph of All Samples No Data Available No Data Available No Data Available No Data Available

Source(s): LAKEWATCH Volunteer Water Quality Monitoring, Seminole County Legacy Storet Data, Seminole County Water Quality Data, Florida LAKEWATCH

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    Stream Flow and Levels

    Stream level and flow data for the Saint Johns Watershed. Learn More about Stream Flow »

    River Flows Whole River Range Flows Data by Segment Levels Whole River Range Levels Data By Segment
    Saint Johns River In the past 30 days
    up Average river flow is faster than it has been historically.
    In the past 30 days
    down Average water levels are lower than they have been historically.

    Source(s): Not Available

    Source(s): Not Available
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