Scientific Investigations Report 2006–5318

Scientific Investigations Report 2006–5318

A Deep Percolation Model for Estimating Ground-Water Recharge: Documentation of Modules for the Modular Modeling System of the U.S. Geological Survey

Prepared in cooperation with the
Bureau of Reclamation, Yakama Nation, and Washington State Department of Ecology

By J.J. Vaccaro


A daily water-budget model for estimating ground-water recharge, the Deep Percolation Model, was modularized for inclusion into the U.S. Geological Survey’s Modular Modeling System. The model was modularized in order to facilitate estimation of ground-water recharge under a large range in climatic, landscape, and land-use and land-cover conditions. The model can be applied to areas as large as regions or as small as a field plot.

An overview of the Modular Modeling System and the Deep Percolation Model is presented. Data requirements, parameters, and variables for the model are described. The modules that compose the Deep Percolation Model are documented.


Overview of the Modular Modeling System
Description of the Deep Percolation Model
Modularization of the Deep Percolation Model
Module Documentation
Example Parameter Input File
Example Output File
Obtaining Model Code
Selected References
Appendix 1. Listing of Available Land Use and Cover Types for the Modules Composing the Deep Percolation Model
Appendix 2. Listing of the Dimensions, Modular Modeling System Declared Values, and Type for the Parameters for the Modules Composing the Deep Percolation Model
Appendix 3. Listing of the National Ocean Service State-Plane Zone Numbers for the Continental United States
Appendix 4. Listing of an Example Parameter Input File for the Deep Percolation Model
Appendix 5. Listing of Model Output File using the Example Parameter Input File for the Deep Percolation Model

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Send questions or comments about this report to the author, J.J. Vaccaro, (253) 552-1620.

For more information about USGS activities in Washington, visit the USGS USGS Washington Water Science Center home page.

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