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 2017	1,930 ug/l		369 ug/l	0.13 mg/l	1	1
JAN-MAR 2017	2,440 ug/l		937 ug/l	0.72 mg/l	1	1
OCT-DEC 2016	1,990 ug/l		185 ug/l	0.09 mg/l	1	1
JUL-SEP 2016	1,460 ug/l		105 ug/l	0 mg/l	1	1
APR-JUN 2016	1,900 ug/l		266 ug/l	0.1 mg/l	1	1
JAN-MAR 2016	5,820 ug/l		216 ug/l	0.09 mg/l	1	1
OCT-DEC 2015	1,870 ug/l		257 ug/l	0.14 mg/l	1	1
JUL-SEP 2015	1,970 ug/l		213 ug/l	0.11 mg/l	1	1
APR-JUN 2015	1,520 ug/l		535 ug/l	0.36 mg/l	1	1
JAN-MAR 2015	2,030 ug/l		281 ug/l	0.09 mg/l	1	1
Five Year Seasonal Graph	Graph		Graph	Graph
Five Year Graph of All Samples	Graph		Graph	Graph

Source(s): FDEP Historic Data from Legacy STORET, Polk County Parks & Natural Resources Division, SWFWMD Water Quality Sampling Data (STORET), FDEP Southwest District Sampling Data, USGS National Water Information System

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 2017	1,575 ug/l		108 ug/l	0.01 mg/l	4	4
APR-JUN 2017	1,922 ug/l		142 ug/l	0.02 mg/l	27	27
JAN-MAR 2017	1,397 ug/l		125 ug/l	0.03 mg/l	27	29
OCT-DEC 2016	1,336 ug/l		131 ug/l	0.06 mg/l	28	32
JUL-SEP 2016	1,380 ug/l		83 ug/l	0.01 mg/l	25	29
APR-JUN 2016	1,501 ug/l		117 ug/l	0.03 mg/l	25	29
JAN-MAR 2016	1,561 ug/l		146 ug/l	0.04 mg/l	25	29
OCT-DEC 2015	1,497 ug/l		116 ug/l	0.03 mg/l	29	36
JUL-SEP 2015	1,297 ug/l		113 ug/l	0.03 mg/l	29	36
APR-JUN 2015	1,545 ug/l		96 ug/l	0.01 mg/l	29	37
JAN-MAR 2015	1,420 ug/l		109 ug/l	0.02 mg/l	29	37
Five Year Seasonal Graph	Graph		Graph	Graph
Five Year Graph of All Samples	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 Ambient Monitoring Sampling Data, SWFWMD Water Quality Sampling Data (STORET), FDEP Southwest District Sampling Data, FDEP, Water Quality Standards and Special Projects (Florida), SWFWMD Water Quality Monitoring Program Data, USGS National Water Information System

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
Click here to view a period of record graph for the central, north, and south groundwater regions

River	Flows Whole River Range	Flows Data by Segment	Levels Whole River Range	Levels Data By Segment
Lena Run	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 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

Source(s): Hillsborough County Stream Waterwatch, Southwest Florida Water Management District, Southwest Florida Water Management District, USGS National Water Information System

Source(s): Not Available