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Methods for Estimating the Magnitude and Frequency of Peak Discharges of Rural, Unregulated Streams in Virginia

U.S. Geological Survey, Water-Resources Investigations Report 94-4148

by James A. Bisese


Table of Contents

Abstract

Introduction

Purpose and scope

Previous studies

Development of peak-discharge equations

Peak-discharge characteristics at gaging stations

Peak-discharge data

Methods for estimating peak discharge at gaging stations

Accuracy and limitations of peak-discharge estimates at gaging stations

Regional peak-discharge analysis

Basin characteristics data

Delineation of peak-discharge regions

Generalized least-squares regional regression analysis

Multiple-parameter regression equations

Drainage-area-only regression equations

Accuracy and limitations of the equations

Methods for regionally weighting peak-discharge estimates at gaging stations

Methods for estimating peak discharges at ungaged sites

Sample computations

Summary

References cited

Appendixes

1. Basin characteristics at peak-discharge gaging stations in Virginia

2. Peak-discharge characteristics for stream-gaging stations in Virginia

 


 

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