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
APR-JUN 2024	588 ug/l		58 ug/l	0.01 mg/l	2	2
JAN-MAR 2024	638 ug/l		26 ug/l	0.01 mg/l	2	6
OCT-DEC 2023	887 ug/l		36 ug/l	0.01 mg/l	2	6
JUL-SEP 2023	702 ug/l		19 ug/l	0.01 mg/l	2	6
APR-JUN 2023	802 ug/l		37 ug/l	0.01 mg/l	2	6
JAN-MAR 2023	708 ug/l		31 ug/l	0.01 mg/l	2	6
Five Year Seasonal Graph	Graph		Graph	Graph
Five Year Graph of All Samples	Graph		Graph	Graph

Source(s): LAKEWATCH Volunteer Water Quality Monitoring, FDEP Historic Data from Legacy STORET, Seminole County Legacy Storet Data, Legacy Orange County Surface Water Quality, Seminole County Water Quality Data, FDEP Central Regional Operations Center, Orange County Surface Water Quality, USGS National Water Information System, Orange County Environmental Protection Division

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
JAN-MAR 2025	522 ug/l		26 ug/l		2	2
OCT-DEC 2024	975 ug/l		46 ug/l		1	2
JUL-SEP 2024	499 ug/l		29 ug/l		4	4
APR-JUN 2024	707 ug/l		24 ug/l	0.01 mg/l	25	39
JAN-MAR 2024	607 ug/l		22 ug/l	0.01 mg/l	28	55
OCT-DEC 2023	705 ug/l	30.5 ug/l	24 ug/l	0.01 mg/l	44	77
JUL-SEP 2023	676 ug/l	9.0 ug/l	23 ug/l	0 mg/l	44	80
APR-JUN 2023	706 ug/l	11.1 ug/l	26 ug/l	0 mg/l	46	85
JAN-MAR 2023	623 ug/l	24.8 ug/l	25 ug/l	0.01 mg/l	44	65
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, FDEP Historic Data from Legacy STORET, FFWCC Legacy Storet Data, Orange County Environmental Protection Division, Legacy Orange County Surface Water Quality, SJRWMD Water Quality Data, FDEP Central Regional Operations Center, FDEP Watershed Monitoring Section, Orange County Surface Water Quality, City of Orlando Ambient Surface Water Quality, FDEP, Water Quality Standards and Special Projects (Florida), USGS National Water Information System, FDEP - Central Regional Operations Center, FDEP Watershed Monitoring Section, Florida LAKEWATCH, Orange County Environmental Protection Division, City of Orlando Ambient Surface Water Quality, FDEP - Watershed Assessment Section, City of Winter Park Water Quality Data

River	Flows Whole River Range	Flows Data by Segment	Levels Whole River Range	Levels Data By Segment
Howell Creek	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