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 2024	1,381 ug/l	130.0 ug/l	95 ug/l	3.75 mg/l	12	51
APR-JUN 2024	1,518 ug/l		68 ug/l	4 mg/l	9	17
JAN-MAR 2024	1,186 ug/l		93 ug/l	4 mg/l	14	51
OCT-DEC 2023	1,107 ug/l		131 ug/l	6 mg/l	14	45
JUL-SEP 2023	1,024 ug/l		119 ug/l	5.5 mg/l	14	51
APR-JUN 2023	1,226 ug/l		179 ug/l	5 mg/l	13	30
JAN-MAR 2023	1,370 ug/l		181 ug/l		12	43
OCT-DEC 2022	1,074 ug/l		178 ug/l		12	41
JUL-SEP 2022	1,417 ug/l		220 ug/l	5.67 mg/l	16	59
APR-JUN 2022	1,539 ug/l		386 ug/l		11	35
JAN-MAR 2022	1,269 ug/l		284 ug/l		11	40
Five Year Seasonal Graph	Graph		Graph	Graph
Five Year Graph of All Samples	Graph	Graph	Graph	Graph

Source(s): LAKEWATCH Volunteer Water Quality Monitoring, Polk County Parks & Natural Resources Division, SFWMD Water Quality Data, FDEP Central Regional Operations Center, FDEP South District Sampling Data, FDEP Watershed Monitoring Section, SFWMD Water Quality Sampling Data, FDEP Southwest Regional Operations Center, FDEP Watershed Assessment Section, FDEP, Water Quality Standards and Special Projects (Florida), USGS National Water Information System, FDEP - Central Regional Operations Center, FDEP Watershed Monitoring Section, Florida LAKEWATCH, Polk County Natural Resources Division, South Florida Water Management District, FDEP - Southwest Regional Operations Center, FDEP - Southeast 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 2024	1,290 ug/l	41.4 ug/l	49 ug/l		14	15
JAN-MAR 2024	1,029 ug/l		33 ug/l		20	27
OCT-DEC 2023	802 ug/l		28 ug/l		21	28
JUL-SEP 2023	814 ug/l		40 ug/l		27	34
APR-JUN 2023	746 ug/l		33 ug/l		23	44
JAN-MAR 2023	766 ug/l		31 ug/l		30	39
OCT-DEC 2022	732 ug/l		40 ug/l		32	41
JUL-SEP 2022	926 ug/l		41 ug/l		18	26
APR-JUN 2022	908 ug/l		53 ug/l		31	52
JAN-MAR 2022	893 ug/l		38 ug/l		31	53
Five Year Seasonal Graph	Graph		Graph	Graph
Five Year Graph of All Samples	Graph	Graph	Graph	Graph

Source(s): LAKEWATCH Volunteer Water Quality Monitoring, FDEP Historic Data from Legacy STORET, Polk County Parks & Natural Resources Division, FDEP Central Regional Operations Center, FDEP South District Sampling Data, Florida Fish and Wildlife Conservation Commission Water Quality Data, FDEP Watershed Monitoring Section, Polk County Natural Resources Division, SFWMD Water Quality Sampling Data, 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 - South Regional Operations Center, FDEP Watershed Monitoring Section, Florida LAKEWATCH, Polk County Natural Resources Division, Southwest Florida Water Management District, 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
Arbuckle 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
Tiger 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
Livingston 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