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
JAN-MAR 2025	1,872 ug/l	98.2 ug/l	349 ug/l		7	7
OCT-DEC 2024	1,769 ug/l	191.6 ug/l	290 ug/l		7	7
JUL-SEP 2024	1,928 ug/l	50.9 ug/l	307 ug/l		8	8
APR-JUN 2024	3,395 ug/l		405 ug/l		7	7
JAN-MAR 2024	1,903 ug/l		493 ug/l		6	6
OCT-DEC 2023	1,447 ug/l		261 ug/l		6	6
JUL-SEP 2023	2,137 ug/l		321 ug/l		6	6
APR-JUN 2023	4,261 ug/l		694 ug/l		6	6
JAN-MAR 2023	2,157 ug/l		439 ug/l		7	7
Five Year Seasonal Graph	Graph	Graph	Graph	Graph
Five Year Graph of All Samples	Graph	Graph	Graph	Graph

Source(s): FDEP Historic Data from Legacy STORET, Polk County Parks & Natural Resources Division, FDEP Watershed Monitoring Section, Polk County Natural Resources Division, SWFWMD Water Quality Sampling Data, FDEP Southwest Regional Operations Center, FDEP, Water Quality Standards and Special Projects (Florida), USGS National Water Information System, FDEP Watershed Monitoring Section, Polk County Natural Resources Division, 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
APR-JUN 2025	1,766 ug/l	10.0 ug/l	108 ug/l		10	11
JAN-MAR 2025	1,753 ug/l	16.3 ug/l	174 ug/l		35	37
OCT-DEC 2024	1,524 ug/l	62.2 ug/l	186 ug/l		33	35
JUL-SEP 2024	1,337 ug/l	12.3 ug/l	109 ug/l		40	51
APR-JUN 2024	1,862 ug/l		147 ug/l		42	51
JAN-MAR 2024	1,336 ug/l		128 ug/l		36	44
OCT-DEC 2023	1,466 ug/l		106 ug/l		39	48
JUL-SEP 2023	1,547 ug/l		104 ug/l		40	54
APR-JUN 2023	1,729 ug/l		144 ug/l		45	68
JAN-MAR 2023	1,301 ug/l		100 ug/l		42	63
Five Year Seasonal Graph	Graph	Graph	Graph	Graph
Five Year Graph of All Samples	Graph	Graph	Graph	Graph

Source(s): Water quality data collected by the City of Lakeland, LAKEWATCH Volunteer Water Quality Monitoring, FDEP Historic Data from Legacy STORET, Polk County Parks & Natural Resources Division, Biological Research Associates , Florida Fish and Wildlife Conservation Commission Water Quality Data, FDEP Watershed Monitoring Section, Polk County Natural Resources Division, 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 Natural Resources Division, Southwest Florida Water Management District, FDEP - Southwest Regional Operations Center, FDEP - Watershed Assessment Section, City of Lakeland

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
Saddle 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 higher than they have been historically.	Levels Data Table and Graph
Banana-Hancock Canal	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
Lena Run	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
Lake Parker Outlet	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