The Blue Water Audit Analysis -
Methods Overview

The structure of the Blue Water Audit analysis is broken into 3 units:

  • Unit 1: individual parcels that are 5 acres and larger (outside of city limits)
  • Unit 2: generalized land use where the parcel size is less than 5 acres (outside of city limits)
  • Unit 3: cities (cities are treated as single entities)

The Blue Water Audit has two main focus areas – nitrogen loading and groundwater withdrawals – that are made up of different categories.

Existing data were gathered and analyzed using a custom methodology that was based primarily on the Nitrogen Source Inventory and Loading Tool (NSILT) methods developed by the Florida Department of Environmental Protection. As a result, each unit was assigned:

  • an overall Floridan Aquifer Nitrogen Footprint. This Footprint summarizes the estimated impact the unit is having on the Floridan Aquifer’s water quality.
  • an overall Floridan Aquifer Groundwater Footprint. This Footprint summarizes the estimated impact the unit is having on the Floridan Aquifer’s water quantity.
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The Blue Water Audit analysis units were created using data from the following sources:

Nitrogen Loading Estimates Overview

Blue Water Audit nitrogen loading estimate categories:

Nitrogen loading estimates were created using data from the following sources:

Floridan Aquifer Nitrogen Footprint Categories:

Groundwater Withdrawal Estimates Overview

Groundwater withdrawal estimate categories:

Groundwater withdrawal estimates were created using data from the following sources:

Floridan Aquifer Groundwater Footprint Categories:

Blue Water Audit - Analysis Results

The Blue Water Audit analysis results form a detailed, comprehensive geodatabase, a detailed tabular database, and a summary tabular database. Due to the project area’s large size, and to maximize the map’s performance, the results have been generalized for display on the interactive map. See below for an example.

These images are an example of the detailed and generalized Blue Water Audit results.

The detailed geodatabase and tabular databases will be used by the Howard T. Odum Florida Springs Institute to help direct and prioritize our conservation efforts.

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In the meantime, feel free to contact us if you have any questions.

 

DISCLAIMER: THE BLUE WATER AUDIT ESTIMATES NITROGEN LOADING AND GROUNDWATER WITHDRAWALS IN THE FLORIDA SPRINGS REGION. THE FOLLOWING SOURCES WERE UTILIZED TO PERFORM THE BLUE WATER AUDIT: COUNTY BOUNDARIES FROM THE U.S. CENSUS, PARCEL BOUNDARIES FROM THE FLORIDA DEPARTMENT OF REVENUE, CITY LIMIT BOUNDARIES FROM THE U.S. CENSUS, STATEWIDE LAND USE AND LAND COVER FROM THE FLORIDA DEPARTMENT OF ENVIRONMENTAL PROTECTION (FDEP), FLORIDA STATEWIDE AGRICULTURAL IRRIGATED LANDS DATABASE (FSAID) AGRICULTURAL LANDS GEODATABASE FROM THE FLORIDA DEPARTMENT OF AGRICULTURE AND CONSUMER SERVICES (FDACS), FSAID IRRIGATED LANDS GEODATABASE FROM FDACS, TOTAL ATMOSPHERIC DEPOSITION DATA FROM THE NATIONAL ATMOSPHERIC DEPOSITION PROGRAM, THE NITROGEN SOURCE AND INVENTORY LOADING TOOL FROM FDEP, RECHARGE MAPS FROM THE U.S. GEOLOGICAL SURVEY (USGS) AND VARIOUS FLORIDA WATER MANAGEMENT DISTRICTS (WMDS), THE CENSUS OF AGRICULTURE FROM THE U.S. DEPARTMENT OF AGRICULTURE, THE FLORIDA WATER MANAGEMENT INVENTORY FROM THE FLORIDA DEPARTMENT OF HEALTH, WATER USE RECORDS FROM VARIOUS WMDS, CONSUMPTIVE USE PERMITS FROM ALL WMDS, AND ESTIMATES FROM ‘WATER WITHDRAWALS, USE, AND TRENDS IN FLORIDA 2010’ BY THE USGS.  THE BLUE WATER AUDIT ANALYSIS WAS PERFORMED BY THE HOWARD T. ODUM FLORIDA SPRINGS INSTITUTE AND ALL INFORMATION AND ESTIMATES CONTAINED HEREIN ARE CORRECT AND ACCURATE WITHIN THE BEST OF OUR KNOWLEDGE. THE FLORIDA SPRINGS INSTITUTE DOES NOT TAKE RESPONSIBILITY FOR ANY ERRORS OR OMISSIONS CONTAINED WITHIN THE SOURCE DOCUMENTS, WHICH ARE THE RESPONSIBILITY OF THE ORIGINAL AUTHOR(S).