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 2026	618 ug/l		70 ug/l		1	1
APR-JUN 2026	1,091 ug/l		173 ug/l		8	43
JAN-MAR 2026	1,270 ug/l		135 ug/l		8	43
OCT-DEC 2025	1,032 ug/l		147 ug/l		9	45
JUL-SEP 2025	1,200 ug/l		220 ug/l		9	45
APR-JUN 2025	1,114 ug/l		126 ug/l		8	43
JAN-MAR 2025	1,164 ug/l		167 ug/l		8	43
OCT-DEC 2024	1,343 ug/l		182 ug/l		9	49
JUL-SEP 2024	1,357 ug/l		193 ug/l		8	48
APR-JUN 2024	1,274 ug/l		149 ug/l		9	47
JAN-MAR 2024	1,141 ug/l		131 ug/l		11	49
Five Year Seasonal Graph	Graph		Graph	Graph
Five Year Graph of All Samples	Graph		Graph	Graph

Source(s): FDEP Historic Data from Legacy STORET, Sarasota County Historic Data from Legacy STORET, Sarasota County Coastal Creeks, Lee County, FDEP South District Sampling Data, FDEP Watershed Monitoring Section, FDEP Southwest Regional Operations Center, FDEP - South Regional Operations Center, FDEP Watershed Monitoring Section, Enviro-Audit

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
APR-JUN 2026	1,141 ug/l		36 ug/l		2	12
JAN-MAR 2026	1,145 ug/l		110 ug/l		2	12
OCT-DEC 2025	1,014 ug/l		116 ug/l		3	14
JUL-SEP 2025	899 ug/l		55 ug/l		3	13
APR-JUN 2025	922 ug/l		56 ug/l		3	13
JAN-MAR 2025	1,023 ug/l		97 ug/l		2	12
OCT-DEC 2024	1,275 ug/l		129 ug/l		2	11
JUL-SEP 2024	900 ug/l		84 ug/l		2	12
APR-JUN 2024	1,070 ug/l		33 ug/l		2	12
JAN-MAR 2024	879 ug/l		39 ug/l		2	12
Five Year Seasonal Graph	Graph		Graph
Five Year Graph of All Samples	Graph		Graph	Graph

Source(s): Sarasota County Coastal Creeks, FDEP Watershed Monitoring Section, Florida LAKEWATCH

Southwest Florida Water Management District calculates the Aquifer Resource Indicator (ARI) for their three groundwater regions each month. The ARI was created to provide the public with a gauge of groundwater levels in their area, so they can develop an understanding of the severity and cycles of drought and recovery. The three regions include: North (Citrus, Hernando, Lake, Levy, Marion, and Sumter counties), Central (Hillsborough, Pasco, Pinellas, and Polk counties), and South (Charlotte, DeSoto, Hardee, Highlands, Manatee, and Sarasota counties). Learn More about the Aquifer Resource Indicator >>

To determine the ARI for a region, each well is compared weekly to its respective low-normal value and the difference is calculated. The weekly differences are reduced to a monthly value for all monitoring wells within a region, and the resulting ARI value represents how far water levels in the aquifer must rise or fall to reach their respective low-normal values.

Source: SWFWMD Hydrologic Data Section Data

River	Flows Whole River Range	Flows Data by Segment	Levels Whole River Range	Levels Data By Segment
Cow Pen Slough	In the past 30 days NO DATA Recent river flow data is unavailable.	No data table or graph available	In the past 30 days Average water levels are lower than they have been historically.	Levels Data Table and Graph
Cowpen Canal 18-283	In the past 30 days NO DATA Recent river flow data is unavailable.	No data table or graph available	In the past 30 days Average water levels are higher than they have been historically.	Levels Data Table and Graph
Curry Creek	In the past 30 days NO DATA Recent river flow data is unavailable.	No data table or graph available	In the past 30 days Average water levels are the same as they have been historically.	Levels Data Table and Graph

Source(s): Not Available

Source(s): Not Available