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 2026	1,479 ug/l		538 ug/l		18	20
JAN-MAR 2026	1,187 ug/l		418 ug/l		20	43
OCT-DEC 2025	1,026 ug/l		181 ug/l		15	30
JUL-SEP 2025	1,476 ug/l		221 ug/l		16	24
APR-JUN 2025	1,235 ug/l		366 ug/l		20	35
JAN-MAR 2025	1,478 ug/l		267 ug/l		17	28
OCT-DEC 2024	1,620 ug/l		415 ug/l		15	26
JUL-SEP 2024	1,309 ug/l		292 ug/l		15	24
APR-JUN 2024	1,532 ug/l		420 ug/l		21	37
JAN-MAR 2024	1,293 ug/l		233 ug/l		23	60
Five Year Seasonal Graph	Graph		Graph
Five Year Graph of All Samples	Graph		Graph

Source(s): FDEP Historic Data from Legacy STORET, Mote Marine Historic Data from Legacy STORET, Sarasota County Historic Data from Legacy STORET, Sarasota County Coastal Creeks, Biological Research Associates , FDEP South District Sampling Data, FDEP Watershed Monitoring Section, Manatee County Environmental Management Sampling Data, FDEP Southwest Regional Operations Center, FDEP - South Regional Operations Center, FDEP Watershed Monitoring Section, Manatee County Environmental Management Sampling Data, FDEP - Southwest Regional Operations Center, FDEP - Watershed Assessment 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 2025	1,471 ug/l		132 ug/l		5	15
JUL-SEP 2025	985 ug/l		113 ug/l		5	15
APR-JUN 2025	1,327 ug/l		175 ug/l		5	12
JAN-MAR 2025	1,598 ug/l		116 ug/l		5	15
OCT-DEC 2024	724 ug/l		149 ug/l		2	4
JUL-SEP 2024	972 ug/l		51 ug/l		3	8
APR-JUN 2024	1,301 ug/l		119 ug/l		5	13
JAN-MAR 2024	1,415 ug/l		95 ug/l		5	12
Five Year Seasonal Graph	Graph		Graph
Five Year Graph of All Samples	Graph		Graph

Source(s): LAKEWATCH Volunteer Water Quality Monitoring, Sarasota County Coastal Creeks, FDEP Watershed Monitoring Section, FDEP Southwest Regional Operations Center, Florida LAKEWATCH, FDEP - Southwest Regional Operations Center

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
Red Bug 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
Phillippi Canal 12-227	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
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
Whitaker Bayou	In the past 30 days Average river flow is faster than it has been historically.	Flows Data Table and Graph	In the past 30 days NO DATA Recent water level data is unavailable.	No data table or graph available
Phillippi 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 lower than they have been historically.	Levels Data Table and Graph
Phillippi Creek (tidal)	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
Phillippi Creek Main B	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
Phillippi Canal 3-16	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
Whitaker Canal 3-5	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
Whitaker Canal 3-7	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
Phillippi Creek Main A	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
Hudson Canal 4-56	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
Phillippi Creek Main C	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
Bowlees 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 lower than they have been historically.	Levels Data Table and Graph

Source(s): Not Available

Source(s): Not Available