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Project Work Plan

Department of Interior USGS GE PES

Fiscal Year 2010 Study Work Plan

Study Title: Greater Everglades Hydrology: Integrating EDEN with Real-Time Hydrology and Biological Responses
Study Start Date: 2008 Study End Date: 2010
Web Sites:
Location (Subregions, Counties, Park or Refuge): Greater Everglades
Funding Source: GE PES
Other Complementary Funding Source(s): South Florida Surface Water Network for the Support of MAP Projects (USACE RECOVER MAP)
Funding History: FY06, FY07, FY08, FY09, FY10
Principal Investigator(s): Pamela A. Telis, USGS, Florida Water Science Center
Email Address:
Phone: 904/232-2602
Fax: 904/899-5097
Mail address: 701 San Marco Blvd., Jacksonville, FL 32207
Study Personnel: na
Supporting Organizations: USGS
Associated / Linked Studies: South Florida Surface Water Network for the Support of MAP Projects (USACE RECOVER MAP), Evapotranspiration and Rainfall Data for EDEN Gages

Overview & Objective(s):

EDEN, the Everglades Depth Estimation Network, is a RECOVER Monitoring and Assessment Plan effort funded by the USACE in 2005 through 2007. EDEN is an integrated network of real-time water-level monitoring, ground-elevation modeling, and water-surface modeling that provides scientists and managers with current (1999-present), on-line water-depth information for the greater Everglades. The target users are biologist and ecologist examining trophic level responses to hydrodynamic changes in the Everglades.

The current scope of work is operation and maintenance of 25 gaging stations, create daily water surfaces, and implement the hydrologic tools to support biological and ecological assessments of the impacts of the restoration plan for the greater Everglades.

Specific Relevance to Major Unanswered Questions and Information Needs Identified:

Water-level gages provide information for EDEN interpolations of daily water level that provide spatially-explicit hydrologic predictions necessary for modeling floral and faunal habitat suitability and distributions across the entire Everglades. These models are critical for evaluations of alternative Everglades restoration plans and monitoring of the habitat impacts of surface hydrologic dynamics.


In FY09, the EDEN project completely reevaluated and reconfigured its data management plan to handle the agency data from water-level gages, manage and process the data, and create daily water surfaces more efficiently and, in the future, with more automation. A simple regression gap-filling program was developed for filling data gaps in water-level data at gages prior to creating daily water-level surfaces. The program was automated for use with provisional (quarterly) and final (annual) data sets. Work is ongoing to use the program potentially for creation of real-time surfaces.

The EDEN ground surface digital elevation model (DEM) was revised in Water Conservation Area 1 and expanded to include the area south of BCNP. The surface water interpolation program was updated for new and revised datasets and expanded to include an area south of BCNP to the mangrove ecotone.

Rainfall and evapotranspiration data are updated regularly for the EDEN gage network and posted to the EDENweb.

The EDEN's primary deliverable and product continues to be the EDENweb (; the project website that provides all data, results, documentation, and other project information for EDEN users.

Future Planning:

The EDEN project is planned for a 5-year renewal by the USACE for the period April 2010 through March 2014. The project will continue to create and post daily water-level surfaces on a real-time basis for Everglades investigators.

Recent Products:

Conrads, P.A. and M.D. Petkewich, 2009, Estimation of missing water-level data for the Everglades Depth Estimation Network (EDEN): U.S. Geological Survey Open-File Report 2009-1120, 53 p.

Telis, P.A. and Henkel, H., 2009, Everglades Depth Estimation Network (EDEN) Applications: Tools to view, extract, plot, and manipulate EDEN data: U.S. Geological Survey Fact Sheet 2009-3052, 4 p.

Liu, Z., Volin, J., Owen, D., Pearlstine, L., Allen, J., Mazzotti, F., and Higer, A., 2008, Validation and ecosystem applications of the EDEN water-surface model for the Florida Everglades: Ecohydrology Volume 2, Issue 2, p. 182-194 (2009).

Planned Products:

Task 1 - Support Everglades scientists by providing hydrologic data for ecological and biological assessments by 1) completing revisions of ground surface DEM, 2) completing revision of SW model, 3) continuing to post data and results to the EDENweb, and 4) document results, present at GEER 2010, and post to EDENweb.

Task 2 - Pilot hindcasting datasets and resulting EDEN surfaces back to 1990


Title of Task 1: Hydrologic support for Everglades restoration
Task Funding:
USGS Priority Ecosystems Science
Task Leaders: Pamela A. Telis
Phone: 904-232-2602
FAX: 904-899-5097
Task Status (proposed or active): active
Task priority: High
Time Frame for Task 1: FY10

Work to be undertaken during the proposal year and a description of the methods and procedures:

  1. Post daily water level surfaces to EDENweb
    1. Provisional 2009 Q3
    2. Provisional 2009, Q4
    3. Provisional 2010, Q1
    4. Provisional 2010, Q2
    5. Final WY 2009
    6. Provisional 2010 Q3
    7. If new SW model is approved, reprocess all surfaces back to 2000
  2. Develop and implement gap-filling equations for all gages
    1. Develop equations for all gages (ongoing as gages are added to EDEN)
    2. Incorporate estimated data into EDEN database
    3. Create automated process for gap filling
    4. Incorporate automated process into EDEN database
    5. Report documentation
  3. Update survey data for gages and revise water level data at gages
    1. Using new datum surveys at gages in 2009/2010 by USACE and others
    2. Update EDEN database for new survey conversions
    3. Update daily median server for conversion value to run SW model
    4. Revise NWIS data with new conversion to NAVD88
    5. Evaluate impacts to EDEN surfaces
  4. Create rules for creating water level surfaces when gage data indicate 'dry' conditions
    1. Create rules
    2. Create test surfaces and evaluate impacts
    3. Modify rules, if needed, and retest
    4. Develop file rules and document protocol
    5. Consider report or publication to document 'dry' conditions
  5. Complete revisions of SW model
    1. Validate model using water level data at benchmarks
    2. Compare pilot sub region results with results for revised SW model
    3. Test revised SW model for 'dry' conditions protocols
    4. Document revised SW model
    5. Submit documentation of revised SW model to peer-reviewed journal
    6. Migrate new SW model to EDEN server and test
  6. Revise EDEN ground surface DEM
    1. Metadata developed for DEM revised in 2009 by FAU, UF, USGS collaboration
    2. Revised DEM and metadata posted on EDENweb
    3. Submit peer-reviewed journal article on the DEM revision in WCA1
    4. Publication submitted to peer-review journal
    5. Pilot test subunit evaluation of DEM revision in ENP
  7. Install benchmarks/evaluate water level at benchmarks
    1. Assist with BM installation (phase 2 in ENP)
    2. Coordinate water level data collection at all benchmarks
    3. Create benchmark database and post benchmark documentation to EDENweb
    4. Use data to test and validate revisions of SW model results

Specific Task Product(s): [List and include expected delivery date(s).]

  • Current daily water level surfaces with documenting datasets posted to EDENweb
  • Documentation for all data processing and model revisions
  • Participation at GEER 2010

Title of Task 2: Integration of EDEN into biological and ecological models
Task Funding:
USGS Priority Ecosystems Science
Task Leaders: Pamela A. Telis
Phone: 904-232-2602
FAX: 904-899-5097
Task Status (proposed or active): active
Task priority: High
Time Frame for Task 2: FY08

Work to be undertaken during the proposal year and a description of the methods and procedures:

  1. Hindcast water level data for gages
    1. Evaluate need to update hindcast equations for original 25 gages
    2. Evaluate need to hindcast additional gages (new)
    3. Evaluate/pilot extending EDEN data back to 1990
      1. Select one component area then determine time needed to hindcast datasets
      2. Evaluate data quality and confidence of estimated data
      3. Test modeled surfaces and determine quality of results

Specific Task Product(s): [List and include expected delivery date(s).]

  • Daily water level surfaces for period 1990 through 2000.

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