Polk County Water Atlas


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Metadata - IconMetadata - Summary of data in the Atlas

The Atlas contains 519 water resources which includes 437 lakes and 82 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 36,482,528 data samples have been included in the Atlas! The samples came from over 76 data sources provided by 26 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
1999 Land-Use and Land-Cover Southwest Florida Water Management District 3/1/2004
2004 Land-Use and Land-Cover Southwest Florida Water Management District 11/23/2006
2006 Land-Use and Land-Cover Southwest Florida Water Management District 11/23/2007
2007 Land-Use and Land-Cover Southwest Florida Water Management District 3/17/2009
2008 Land-Use and Land-Cover Southwest Florida Water Management District 6/1/2010
2009 Land-Use and Land-Cover Southwest Florida Water Management District 6/6/2011
2010 Land-Use and Land-Cover Southwest Florida Water Management District 7/12/2013
2014 Land-Use and Land-Cover Southwest Florida Water Management District 4/1/2019
2014 Land-Use and Land-Cover Southwest Florida Water Management District Not Available
2020 Land-Use and Land-Cover Southwest Florida Water Management District Not Available
Bathymetric Maps No Specific Agency Not Available
Environmental Protection Agency Lake Regions Environmental Protection Agency 8/1/1996
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
Polk County 2016 FEMA Floodplain Boundaries Polk County 10/17/2017
Polk County Hydrography Layer University of South Florida Water Institute 10/1/2004
Polk County Municipality Boundaries Polk County 10/17/2017
Polk County Parks and Boat Ramps Polk County 10/17/2017
Polk County Roads Polk County 2/28/2007
Polk County Watershed Boundaries Polk County 1/1/2001
Population Density (2000) U.S. Department of Commerce 1/1/2000
Population Estimates for Watersheds U.S. Department of Commerce 12/31/2021
SFWMD 1988 Land Use/Land Cover South Florida Water Management District 6/1/2011
SFWMD 1995 Land Use/Land Cover South Florida Water Management District 6/1/2011
SFWMD 1999 Land Use/Land Cover South Florida Water Management District 6/1/2011
SFWMD 2004 Land Use/Land Cover South Florida Water Management District 6/1/2011
SFWMD 2014-16 Land Use/Land Cover South Florida Water Management District 4/1/2019
SJRWMD Radar Rainfall Estimates St. Johns River Water Management District Not Available
SWFWMD Bathymetric Maps Southwest Florida Water Management District 6/1/2003
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
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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