Lake County Water Atlas


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Metadata - IconMetadata - Summary of data in the Atlas

The Atlas contains 696 water resources which includes 603 lakes and 93 rivers . Data recorded in the Atlas reaches back 124 years, starting on Monday, January 1, 1900. The most recent data is from Wednesday, March 27, 2024. Over 43,909,149 data samples have been included in the Atlas! The samples came from over 56 data sources provided by 20 different data providers. These people and agencies have helped make the Atlas an integral tool for managing our water resources.

Geographic Information Systems Data

Geographic Information Systems (GIS) data consists largely of land mapping and spatial data and is used in a wide variety of fields. The lay of the land can affect almost every aspect of life, including an area's culture, government, environment, and commerce, making GIS information important to everyone. Fields such as anthropology, medical science, and natural science use GIS to measure and predict the impact of geography on a region. By mapping water resources, the Atlas provides spatial information useful to citizens, water management professionals, and scientists alike. The following core datasets are processed as part of geospatial analyses, the results of which are presented directly within Atlas components:

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GIS Dataset Name Data Custodian Data Current as of: More Information
1995 Land-Use and Land-Cover Southwest Florida Water Management District 4/1/2001
EPA Impaired Waters & TMDL Data US Environmental Protection Agency 10/23/2017
FDEP Impaired Waters & TMDL Data Florida Department of Environmental Protection Not Available
FNAI Managed Lands / Conservation Data Florida Natural Areas Inventory 3/8/2019
Lake Assessment Data University of South Florida Water Institute 1/1/2004
Lake County Hydrography Layer Lake County 3/23/2005
Lake County Watershed Delineations Lake County 11/1/2002
LCWA Lake Bathymetry Data Lake County Water Authority 8/15/2015
Population Density (2000) U.S. Department of Commerce 1/1/2000
Population Estimates for Watersheds U.S. Department of Commerce 12/31/2021
SJRWMD 2000 Land Use/Land Cover St. Johns River Water Management District 9/1/2003
SJRWMD 2004 Land Use/Land Cover St. Johns River Water Management District 1/30/2007
SJRWMD 2009 Land Use/Land Cover St. Johns River Water Management District 7/30/2012
SJRWMD 2014 Land Use/Land Cover St. Johns River Water Management District 1/15/2019
SJRWMD Radar Rainfall Estimates St. Johns River Water Management District Not Available
SWFWMD Radar Rainfall Estimates Southwest Florida Water Management District Not Available
USGS 1:24,000 National Hydrography Dataset University of South Florida Water Institute 9/1/2009
Water Atlas Sample Site Locations University of South Florida Water Institute 9/1/2009
Water Atlas Sample Site Locations University of South Florida Water Institute 3/23/2005
Waters Not Attaining Standards (WNAS) Florida Department of Environmental Protection Not Available

Monitoring and Sampling Data

Citizens, scientists, and professionals all contribute to monitoring and sampling data in many ways. Citizens often provide information such as water levels data through volunteer programs. Scientists and professionals set up equipment at sampling stations for measuring attributes such as water quality and hydrology. They provide the data in various formats to the Atlas, which compiles, organizes, and presents the data to help people better understand the county's water resources.

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