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 2024	1,401 ug/l		112 ug/l	0.03 mg/l	12	16
OCT-DEC 2023	1,002 ug/l		29 ug/l		3	4
JUL-SEP 2023	1,001 ug/l		48 ug/l	0.03 mg/l	14	24
APR-JUN 2023	1,134 ug/l		49 ug/l		14	24
JAN-MAR 2023	1,368 ug/l		51 ug/l	0.04 mg/l	26	44
OCT-DEC 2022	1,428 ug/l		55 ug/l	0.04 mg/l	22	37
JUL-SEP 2022	1,351 ug/l		52 ug/l	0.03 mg/l	23	42
APR-JUN 2022	1,487 ug/l		55 ug/l	0.03 mg/l	23	42
JAN-MAR 2022	1,265 ug/l		59 ug/l	0.03 mg/l	28	47
Five Year Seasonal Graph	Graph	Graph	Graph	Graph
Five Year Graph of All Samples	Graph	Graph	Graph	Graph

Source(s): Lake County Surface Water Quality, LAKEWATCH Volunteer Water Quality Monitoring, FDEP Historic Data from Legacy STORET, SJRWMD Water Quality Data, Biological Research Associates , FDEP Central Regional Operations Center, Florida Fish and Wildlife Conservation Commission Water Quality Data, FDEP Watershed Monitoring Section, Orange County Surface Water Quality, USGS National Water Information System, Watershed Action Volunteer Water Quality Data, FDEP - Central Regional Operations Center, FDEP Watershed Monitoring Section, Florida LAKEWATCH, Lake County Water Resource Management, Orange County Environmental Protection Division, St. Johns River Water Management District, 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
JAN-MAR 2024	1,080 ug/l		153 ug/l	0.03 mg/l	20	31
OCT-DEC 2023	1,192 ug/l		119 ug/l		13	29
JUL-SEP 2023	1,146 ug/l		62 ug/l		61	137
APR-JUN 2023	1,188 ug/l		39 ug/l	0.01 mg/l	95	183
JAN-MAR 2023	1,138 ug/l		52 ug/l	0.03 mg/l	95	202
OCT-DEC 2022	1,030 ug/l		58 ug/l	0.03 mg/l	98	173
JUL-SEP 2022	1,021 ug/l		51 ug/l	0.03 mg/l	99	208
APR-JUN 2022	1,142 ug/l		47 ug/l	0.03 mg/l	116	250
JAN-MAR 2022	1,102 ug/l		55 ug/l	0.03 mg/l	118	220
Five Year Seasonal Graph	Graph	Graph	Graph	Graph
Five Year Graph of All Samples	Graph	Graph	Graph	Graph

Source(s): Lake County Surface Water Quality, LAKEWATCH Supplemental Water Quality Sampling, LAKEWATCH Volunteer Water Quality Monitoring, FDEP Historic Data from Legacy STORET, Orange County Environmental Protection Division, Legacy Orange County Surface Water Quality, SJRWMD Water Quality Data, Biological Research Associates , FDEP Central Regional Operations Center, Florida Fish and Wildlife Conservation Commission Water Quality Data, FDEP Watershed Monitoring Section, Orange County Surface Water Quality, FDEP, Water Quality Standards and Special Projects (Florida), USGS National Water Information System, Watershed Action Volunteer Water Quality Data, FDEP - Central Regional Operations Center, FDEP Watershed Monitoring Section, Florida LAKEWATCH, Lake County Water Resource Management, Orange County Environmental Protection Division, St. Johns River Water Management District, FDEP - Watershed Assessment Section

• Water Quality Sampling Locations - View a map showing the point locations of water quality monitoring stations which collect data being presented on the Water Atlas.

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
Apopka Beauclair 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
Haynes 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
Palatlakaha River	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
Little 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
Big 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
Wolf Branch	In the past 30 days Average river flow is the same as 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
Ocklawaha River	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
Griffin Flowway	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
Green Swamp 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

Source(s): Not Available

Source(s): Not Available