Scientific Investigations Report 2006-5041

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006-5041

Analysis of Sensitivity of Simulated Recharge to Selected Parameters for Seven Watersheds Modeled Using the Precipitation-Runoff Modeling System



By D. Matthew Ely

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Table of Contents

Conversion Factors, Datums, and Acronyms and Abbreviations

Abstract

Introduction

Description of Watershed Models

Sensitivity Analysis

Application of Results to Future Modeling Efforts

Summary

References Cited

Figures

Figure 1. Conceptual Precipitation-Runoff Modeling System.

Figure 2. Locations of seven watersheds examined for sensitivity of simulated ground-water recharge.

Figure 3. Locations of Lost River, Methow River watershed (from Ely, 2003) and Big Creek, Yakima River watershed, Washington (from Mastin and Vaccaro, 2002).

Figure 4. Locations of Hamden watershed, Minnesota (K.C. Vining, U.S. Geological Survey, written commun., 2003) and North Fork Pheasant Branch Creek watershed near Middleton, Wisconsin (from Steuer and Hunt, 2001).

Figure 5. Locations of the Amite River watershed, Louisiana and Mississippi; English River watershed, Iowa; and South Branch Potomac River watershed, West Virginia.

Figure 6. Dimensionless scaled sensitivities of the five most significant model parameters, in descending order, for seven watershed models.

Figure 7. Normalized composite scaled sensitivities of model parameters for the Lost River and Big Creek watersheds, Washington.

Figure 8. Normalized composite scaled sensitivities of model parameters for the Hamden watershed, Minnesota.

Figure 9. Normalized composite scaled sensitivities of model parameters for the North Fork Pheasant Branch watershed, Wisconsin.

Figure 10. Normalized composite scaled sensitivities of model parameters for the Amite River watershed, Louisiana and Mississippi; English River watershed, Iowa; and South Branch Potomac River watershed, West Virginia.

Tables

Table 1. Summary of watershed characteristics and simulation periods for seven watershed models.

Table 2. Description of Precipitation-Runoff Modeling System parameters used in sensitivity analysis for the seven watershed models.

Table 3. Parameter correlation coefficients greater than 0.85 or less than -0.85 for seven watershed models.

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Send questions or comments about this report to the author, D. Matthew Ely , (253) 428-3600 ext. 2622.

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