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
JAN-MAR 2025	1,325 ug/l		80 ug/l		1	2
OCT-DEC 2024	903 ug/l	150.0 ug/l	90 ug/l	0.07 mg/l	2	3
JUL-SEP 2024	1,297 ug/l	100.0 ug/l	109 ug/l	0.06 mg/l	2	5
APR-JUN 2024	1,413 ug/l	100.0 ug/l	136 ug/l	0.06 mg/l	2	4
JAN-MAR 2024	805 ug/l	100.0 ug/l	57 ug/l	0.04 mg/l	2	4
OCT-DEC 2023	1,618 ug/l	300.0 ug/l	123 ug/l	0.18 mg/l	1	3
JUL-SEP 2023	563 ug/l	100.0 ug/l	104 ug/l	0.05 mg/l	1	3
APR-JUN 2023	441 ug/l	100.0 ug/l	64 ug/l	0.05 mg/l	1	3
JAN-MAR 2023	655 ug/l	133.3 ug/l	75 ug/l	0.04 mg/l	1	3
Five Year Seasonal Graph	Graph	Graph	Graph	Graph
Five Year Graph of All Samples	Graph	Graph	Graph	Graph

Source(s): FDEP Historic Data from Legacy STORET, FFWCC Legacy Storet Data, Seminole County Legacy Storet Data, Volusia County Water Quality Data, Seminole County Water Quality Data, SJRWMD Water Quality Data, FDEP Central Regional Operations Center, Florida Fish and Wildlife Conservation Commission Water Quality Data, FDEP Watershed Monitoring Section, USGS National Water Information System, FDEP - Central Regional Operations Center, FDEP Watershed Monitoring 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
OCT-DEC 2024	903 ug/l	39.2 ug/l	34 ug/l	0.02 mg/l	5	5
JUL-SEP 2024	1,107 ug/l	24.0 ug/l	15 ug/l	0.01 mg/l	5	5
APR-JUN 2024	1,716 ug/l	69.6 ug/l	48 ug/l	0.01 mg/l	5	5
JAN-MAR 2024	855 ug/l	39.2 ug/l	47 ug/l	0.01 mg/l	5	5
OCT-DEC 2023	959 ug/l	39.2 ug/l	44 ug/l	0.01 mg/l	6	6
JUL-SEP 2023	826 ug/l	39.2 ug/l	29 ug/l	0.01 mg/l	6	7
APR-JUN 2023	897 ug/l	39.2 ug/l	12 ug/l	0.01 mg/l	6	6
JAN-MAR 2023	698 ug/l	74.4 ug/l	29 ug/l	0.01 mg/l	6	7
Five Year Seasonal Graph	Graph	Graph	Graph	Graph
Five Year Graph of All Samples	Graph	Graph	Graph	Graph

Source(s): LAKEWATCH Supplemental Water Quality Sampling, LAKEWATCH Volunteer Water Quality Monitoring, Legacy STORET for USEPA, FDEP Historic Data from Legacy STORET, Seminole County Legacy Storet Data, Seminole County Water Quality Data, SJRWMD Water Quality Data, FDEP Central Regional Operations Center, FDEP Watershed Monitoring Section, Florida LAKEWATCH, FDEP - Central Regional Operations Center, FDEP Watershed Monitoring Section, Florida LAKEWATCH

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 Average river flow is slower than it has been historically.	Flows Data Table and Graph	In the past 30 days Average water levels are lower than they have been historically.	Levels Data Table and Graph

Source(s): Not Available

Source(s): Not Available