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 2023	1,238 ug/l		53 ug/l		1	1
APR-JUN 2023	1,219 ug/l		123 ug/l		4	4
JAN-MAR 2023	1,409 ug/l		122 ug/l		4	6
OCT-DEC 2022	1,345 ug/l		159 ug/l		5	7
JUL-SEP 2022	1,269 ug/l		191 ug/l		5	8
APR-JUN 2022	1,234 ug/l		225 ug/l		5	7
JAN-MAR 2022	1,369 ug/l		139 ug/l		8	10
OCT-DEC 2021	1,350 ug/l		145 ug/l		4	5
JUL-SEP 2021	1,446 ug/l		188 ug/l	56.6 mg/l	9	9
APR-JUN 2021	986 ug/l		102 ug/l	24 mg/l	7	9
JAN-MAR 2021	1,256 ug/l		83 ug/l	20.6 mg/l	9	11
Five Year Seasonal Graph	Graph		Graph	Graph
Five Year Graph of All Samples	Graph		Graph	Graph

Source(s): Polk County Parks & Natural Resources Division, FDEP Watershed Monitoring Section, SWFWMD Water Quality Sampling Data, FDEP Southwest Regional Operations Center, USGS National Water Information System, FDEP Watershed Monitoring Section, Polk County Parks & Natural Resources Department, Southwest Florida Water Management District, FDEP - Southwest Regional Operations Center

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
JUL-SEP 2023	917 ug/l		36 ug/l		50	51
APR-JUN 2023	1,159 ug/l		50 ug/l		66	68
JAN-MAR 2023	969 ug/l		43 ug/l		69	74
OCT-DEC 2022	852 ug/l		39 ug/l		72	91
JUL-SEP 2022	1,019 ug/l		28 ug/l		69	81
APR-JUN 2022	1,038 ug/l		49 ug/l		78	91
JAN-MAR 2022	924 ug/l		43 ug/l		66	76
OCT-DEC 2021	1,021 ug/l		38 ug/l		78	98
JUL-SEP 2021	1,025 ug/l		42 ug/l	15.81 mg/l	119	134
APR-JUN 2021	1,136 ug/l		45 ug/l	15.7 mg/l	129	138
JAN-MAR 2021	945 ug/l		43 ug/l	17.5 mg/l	130	136
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, Polk County Parks & Natural Resources Division, Biological Research Associates , FDEP Watershed Monitoring Section, SWFWMD Water Quality Sampling Data, FDEP Southwest Regional Operations Center, FDEP, Water Quality Standards and Special Projects (Florida), SWFWMD Water Quality Monitoring Program Data, USGS National Water Information System, FDEP - Central Regional Operations Center, FDEP Watershed Monitoring Section, Florida LAKEWATCH, Polk County Parks & Natural Resources Department, Southwest Florida Water Management District, FDEP - Southwest Regional Operations Center, FDEP - Watershed Assessment Section

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
Peace River	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 Average water levels are higher than they have been historically.	Levels Data Table and Graph
Lake Hamilton Canal	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
Peace Creek	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 Average water levels are higher than they have been historically.	Levels Data Table and Graph
Lake Henry Canal	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
Saddle Creek	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 Average water levels are higher than they have been historically.	Levels Data Table and Graph

Source(s): Not Available

Source(s): Not Available