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 2023	500 ug/l				2	2
JAN-MAR 2023	569 ug/l		34 ug/l	0.02 mg/l	4	8
OCT-DEC 2022	609 ug/l	36.7 ug/l	84 ug/l	0.02 mg/l	8	17
JUL-SEP 2022	785 ug/l	45.4 ug/l	76 ug/l	0.02 mg/l	12	31
APR-JUN 2022	2,069 ug/l	40.7 ug/l	80 ug/l	0.01 mg/l	17	46
JAN-MAR 2022	1,075 ug/l	43.0 ug/l	55 ug/l	0.01 mg/l	17	47
OCT-DEC 2021	608 ug/l	51.6 ug/l	77 ug/l	0.01 mg/l	26	69
JUL-SEP 2021	940 ug/l	48.0 ug/l	92 ug/l	0.02 mg/l	32	123
APR-JUN 2021	851 ug/l	42.3 ug/l	97 ug/l	0 mg/l	32	145
JAN-MAR 2021	658 ug/l	12.0 ug/l	102 ug/l	0.01 mg/l	22	119
Five Year Seasonal Graph	Graph	Graph	Graph	Graph
Five Year Graph of All Samples	Graph	Graph	Graph	Graph

Source(s): Cape Coral Canal Watch, LAKEWATCH Volunteer Water Quality Monitoring, Lee County Environmental Laboratory, FDEP Historic Data from Legacy STORET, Florida Department of Environmental Protection, SFWMD Legacy Water Quality Sampling Data, FDEP South District Sampling Data, FDEP Watershed Monitoring Section, Florida LAKEWATCH, City of Sanibel, Natural Resources Department, SFWMD Water Quality Sampling Data, FDEP, Water Quality Standards and Special Projects (Florida), City of Cape Coral, USGS National Water Information System, Lee County Environmental Laboratories, FDEP - South Regional Operations Center, FDEP Watershed Monitoring Section, City of Sanibel Natural Resources Department, Sanibel-Captiva Conservation Foundation, FDEP - Watershed Assessment Section, City of Cape Coral

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 2023	690 ug/l		49 ug/l	0.03 mg/l	3	3
OCT-DEC 2022	1,055 ug/l		47 ug/l	0.02 mg/l	3	9
OCT-DEC 2022	1,686 ug/l		274 ug/l		2	2
JUL-SEP 2022	2,896 ug/l		21 ug/l	0.03 mg/l	19	21
JUL-SEP 2022	1,479 ug/l		178 ug/l		2	6
APR-JUN 2022	1,413 ug/l		170 ug/l		2	6
APR-JUN 2022	1,184 ug/l		50 ug/l	0.02 mg/l	6	10
JAN-MAR 2022	1,103 ug/l		50 ug/l	0 mg/l	6	8
JAN-MAR 2022	1,606 ug/l		222 ug/l		2	6
OCT-DEC 2021	1,789 ug/l		237 ug/l		2	6
OCT-DEC 2021	898 ug/l		46 ug/l	0 mg/l	5	13
JUL-SEP 2021	1,943 ug/l		66 ug/l	0.01 mg/l	10	22
JUL-SEP 2021	1,533 ug/l		221 ug/l		2	6
APR-JUN 2021	1,202 ug/l		82 ug/l		2	6
APR-JUN 2021	1,771 ug/l		68 ug/l	0 mg/l	10	18
JAN-MAR 2021	1,157 ug/l		59 ug/l	0.01 mg/l	6	14
JAN-MAR 2021	1,452 ug/l		173 ug/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, Lee County Pondwatch, FDEP South District Sampling Data, City of Sanibel, Natural Resources Department, Sanibel-Captiva Conservation Foundation, City of Cape Coral, USGS National Water Information System, FDEP - South Regional Operations Center, Florida LAKEWATCH, City of Sanibel Natural Resources Department, Sanibel-Captiva Conservation Foundation

River	Flows Whole River Range	Flows Data by Segment	Levels Whole River Range	Levels Data By Segment
Gator Slough	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 higher than they have been historically.	Levels Data Table and Graph

Source(s): Not Available

Source(s): Not Available