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 | 1,070 ug/l |
|
36 ug/l |
|
1 | 1 |
| OCT-DEC 2023 | 910 ug/l |
|
37 ug/l |
|
3 | 3 |
| JUL-SEP 2023 | 1,250 ug/l |
|
92 ug/l |
|
4 | 8 |
| APR-JUN 2023 | 1,060 ug/l |
|
75 ug/l |
|
4 | 11 |
| JAN-MAR 2023 | 1,267 ug/l |
|
83 ug/l |
|
4 | 12 |
| OCT-DEC 2022 |
|
|
170 ug/l |
|
3 | 8 |
| JUL-SEP 2022 | 1,055 ug/l |
|
81 ug/l |
|
4 | 11 |
| APR-JUN 2022 | 1,195 ug/l |
|
76 ug/l |
|
4 | 11 |
| JAN-MAR 2022 | 1,045 ug/l |
|
55 ug/l |
|
4 | 11 |
| 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 |
|---|---|---|---|---|---|---|
|
||||||
| Five Year Seasonal Graph |
|
|
|
|
||
| Five Year Graph of All Samples |
|
|
|
|
||
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 |
Average river flow is faster than it has been historically.
|
Average water levels are higher than they have been historically.
|
Source(s): Not Available
Source(s): Not Available