Introduction:Preface

PREFACE

The work described in this report was authorized by Headquarters, U. S. Army Corps of Engineers (USACE). Funding for this report was provided by the Hydrologic Systems Branch, Coastal and Hydraulics Laboratory (CHL), Engineer Research and Development Center (ERDC) and the System Wide Water Resources Program (SWWRP). At the time of preparation, Mr. Earl Edris was the chief, Hydrologic Systems Branch, CHL, ERDC.

This report was prepared by Dr. Charles W. Downer, Coastal and Hydraulics Laboratory (CHL) Engineer Research and Development Center (ERDC), Dr. Fred L. Ogden, Department of Civil and Environmental Engineering, University of Connecticut, and Mr. Aaron Byrd USACE-ERDC-CHL.

This report was prepared under the general supervision of Mr. Earl Edris, Chief, Hydrologic Systems Branch, CHL, ERDC. Mr. Tom Richardson was Director of CHL. Dr. Steve Ashby (EL) was the SWWRP program manager. The report was reviewed by Dr Mark Jourdan, CH-HW and Dr Jeffery D. Jorgeson, CH-HW.

At the time of publication Dr. Jim Houston was ERDC Director.

This document and the software GSSHA are products of the Watershed Systems Group, Hydrologic Systems Branch, Coastal and Hydraulics Laboratory, Engineer Research Development Center. For more information about GSSHA, contact:

Barbara Parsons

Hydrologic Systems Branch

Coastal and Hydraulics Laboratory

Engineer Research Development Center

3909 Halls Ferry Road

Vicksburg, MS 39180

http://chl.wes.army.mil/software

This report should be cited as follows:

Downer, C. W., Ogden, F. L., and Byrd, A.R. 2008, GSSHAWIKI User’s Manual, Gridded Surface Subsurface Hydrologic Analysis Version 4.0 for WMS 8.1, ERDC Technical Report, Engineer Research and Development Center, Vicksburg, Mississippi.