Hydrologic Modeling for the Arid Southwest United States
Preface
During 1991 and 1992, the California county of San Bernardino (Department of Transportation and Flood Control) funded a comprehensive study of and hydrology methods and stormflow estimation procedures used in the southwest United States. The San Bernardino County Department of Water Resources also assembled a team of experts in hydrology and stormflow estimation procedures in order to aid in reviewing recommended procedures and algorithms leading to a comprehensive flood control and floodplain stormflow estimation procedure.
Included in the expert review panel were representatives from the San Bernardino County Water Resources and Planning Divisions, Kern County Floodplain Management Division, Orange County Environmental Management Agency, the U.S. Army Corps of Engineers (Los Angeles District), Riverside County Flood Control District, the University of Arizona at Tucson, the University of California at Davis, the University of Nevada at Las Vegas, the California State University at Fullerton, and several private engineering consultants, including the firm Williamson and Schmid, under whose auspices the work was conducted.
A detailed comparison of several flood control stormflow estimation procedures used in the southwest United Sates was a significant product produced during the course of this comprehensive study, and provided an in-depth exposition of similarities and dissimilarities in stormflow estimation methods.
This book provides flood control engineers and planners, floodplain managers, storinflow modelers and researchers a valuable compendium of information as to the stormflow modeling procedures used by several flood control agencies.
Table of Contents
Chapter 1 - Introduction
Chapter 2 - Runoff Modeling Techniques
2.1. Unit Hydrograph Techniques
2.2. Unit Hydrograph Shape
2.3. Synthetic Regional Arid S-Graph Development
Chapter 3 - Design Storm Input
3. 1. Design Storm Patterns and Storm Duration
3.2. Design Storm Areal Extent
3.3. Design Storm Rainfall
3.4. Design Storm Pattern Shape
3.5. Desert Rainfall Intensity-duration Characteristics
3.6. Depth-Area Effects
3.7. Comparison of Depth-Area Reduction Curves
Chapter 4 - Design Storm Rainfall Mass Versus Critical Duration Relationships
Chapter 5 - Effective Rainfall Determination
5. I. Loss Rate Estimation Methods
5.2. Calibration of Rainfall-Runoff Methods
Chapter 6 - Confidence Interval Issues and Design Storm Calibration
Chapter 7 - Stream Gauge Data Review
7.1. Dissimilarity in Flood Frequency Tendencies: California and Arizona Desert Catchments
7.2. Dissimilarity in Flood Frequency Tendencies: Riverside, San Diego, and San Bernardino Counties
7.3. Comparison of San Bernardino County Hydrology Manual Peak Flow Estimates to USGS Regression Equation Estimates
7.4. Comparison of San Bernardino County 100-year Runoff Volume Estimates, for Desert Master Plans of Drainage, to USGS Equations
7.5. Comparison of San Bernardino County 100-year Runoff Volume Estimates, for Apple Valley Dry Lake, to Regionalized Dry Lake Runoff Volume Estimates
7.6. Stream Gauge Data Availability
Appendix A - Rainfall Data
Appendix B - Rainfall Mass Tabulations
Appendix C - Excerpt, USGS Water Resources Investigation Report 84-4142
Appendix D - Stream Gauge Data Tabulation
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