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Open-File Report 2009–1120

Prepared in cooperation with the U.S. Geological Survey Greater Everglades Priority Ecosystems Science

Estimation of Missing Water-Level Data for the Everglades Depth Estimation Network (EDEN)

By Paul A. Conrads and Matthew D. Petkewich

ABSTRACT

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The Everglades Depth Estimation Network (EDEN) is an integrated network of real-time water-level gaging stations, ground-elevation models, and water-surface elevation models designed to provide scientists, engineers, and water-resource managers with current (2000–2009) water-depth information for the entire freshwater portion of the greater Everglades. The U.S. Geological Survey Greater Everglades Priority Ecosystems Science provides support for EDEN and their goal of providing quality-assured monitoring data for the U.S. Army Corps of Engineers Comprehensive Everglades Restoration Plan. To increase the accuracy of the daily water-surface elevation model, water-level estimation equations were developed to fill missing data. To minimize the occurrences of no estimation of data due to missing data for an input station, a minimum of three linear regression equations were developed for each station using different input stations. Of the 726 water-level estimation equations developed to fill missing data at 239 stations, more than 60 percent of the equations have coefficients of determination greater than 0.90, and 92 percent have an coefficient of determination greater than 0.70.

Revised September 15, 2009

First posted June 15, 2009

For additional information contact:
Director
U.S. Geological Survey
Stephenson Center, Suite 129
720 Gracern Road
Columbia, SC 29210–7651
http://sc.water.usgs.gov/

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Suggested citation:

Conrads, P.A., and Petkewich, M.D., 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.



Contents

Abstract

Introduction

Data-Collection Network

Estimation of Water-Level Data

Summary and Discussion

Acknowledgments

References Cited

Appendix 1. EDEN marsh stations, type of station, operating agency, location, and real-time status sorted by location

Appendix 2. EDEN canal station, type of station, operating agency, location, and real-time status sorted by location

Appendix 3. EDEN water-level estimation equations and performance statistics sorted by station name


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