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Water of the Everglades. Presented By: Emily Kay Reeder Environmental and Water Resources Engineering; University of Texas, Austin. Objective. To analyze water depths in the Florida Everglades, relating the water levels to the hydrologic needs of the American Alligator.

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water of the everglades
Water of the Everglades

Presented By: Emily Kay Reeder

Environmental and Water Resources Engineering; University of Texas, Austin

  • To analyze water depths in the Florida Everglades, relating the water levels to the hydrologic needs of the American Alligator.

"The Everglades ecosystem must be restored both in terms of water quality and water quantity and must be preserved and protected in a manner that is long term and comprehensive.“

~ The Everglades Forever Act (Florida Statute No. 373.4922)

everglades geography
Everglades Geography
  • South Florida
  • Kissimmee Watershed
  • Lake Okeechobee
  • 100 Miles
  • Florida Bay
facts on the everglades
Facts on The Everglades
  • 10, 000 Islands
  • 6 Inches Beneath Sea Level
  • Average Annual Rainfall 130 mm
  • Over 2,000 Plant Species
the american alligator
The American Alligator
  • Largest Reptile in North America
  • Length 8 – 14 Feet
  • 35 Eggs, 15 Hatch, 6 Live to a Year, 4 Mature
  • Populate North Carolina to Texas
  • Thermoregulate
    • Ectothermic
    • Active at Ambient Temperature of 82° F to 92° F
    • Dormant at Ambient Temperature of 55° F
adequate water depth and the alligator
Adequate Water Depth and the Alligator
  • Thermoregulation
    • Internal Body Temperature of 86° F to 88° F
    • Water Temperature of81° F to 88° F
    • Deep Enough for Total Submergence (~ 18 inches)
    • Deep Enough for Cool Temperature
  • Escape from Danger
  • Nest Protection
research plan
Research Plan
  • Enter Water Levels at Specific Gauge Station Locations
  • Build Elevation Model for Everglades Area
  • View Temporal Data using the Tracking Analyst
  • Perform Raster Calculation with Water Levels and Elevation Values to find Water Depth (Interpolate to Raster)
  • Analyze Water Depths, Relating to Hydrologic Requirements of the American Alligator
data sources
Data Sources
  • Everglades Depth Estimation Network (EDEN)
    • Water Levels
  • DBHydro
    • Water Levels
    • Elevation
eden everglades depth estimation network
EDENEverglades Depth Estimation Network
  • USGS South Florida Information Access
  • Integrated Network of Real-Time Water Level and Ground Elevation Modeling
  • GIS Models and Monitoring Networks
    • 253 Gaging Stations
    • Telemetry Equipment for Hourly Data
  • Comprehensive Everglades Restoration Plan
    • Large Scale Field Operations
    • Integration of Hydrologic and Ecological Responses
    • Support of Biological and Ecological Assessments that Measure Ecosystem Responses
  • South Florida Water Management District's Corporate Environmental Database
  • Stores Hydrologic, Meteorologic, Hydrogeologic and Water Quality Data
eden water level data
EDEN Water Level Data
  • 12 Gauge Stations
    • Everglades National Park
    • Given Latitude and Longitude
    • Entered into GIS via XY Data
  • Water Levels
    • Time Series Graph
    • Data Converted to Chart in Excel
    • Joined to each Station by OID
    • Summer and Winter 2006
dbhydro water level data
DBHydro Water Level Data
  • Downloaded Water Levels
  • Identified by Dbkey
  • No Parameter to Join/Relate to Elevation Data
  • No Latitude/Longitude Coordinates to Establish Stations
future work
Future Work
  • View Temporal Data using Tracking Analyst
  • Raster Calculation to Determine Water Depths
  • Determine Alligator Sustainability
  • Pictures





  • Literature