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In cooperation with the Texas Water Development Board

Evaluation of the Streamflow-Gaging Network
of Texas and a Proposed Core Network

By Raymond M. Slade, Jr., Teresa Howard, and Roberto Anaya

U.S. Geological Survey
Water-Resources Investigations Report 01–4155


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pdf (1.64 MB)

plate (7.48 MB, 26" X 26")


Contents

Abstract

Introduction

Background

Purpose and Scope

Streamflow Network Analysis

History of Streamflow Gaging in Texas

Network Evaluations in Texas

Network Funding and Data Uses

Major Objectives of a Core Network

Evaluation of the Existing Network

Hydrologic Regions

Regional Optimization Model

Flow Correlation

Proposed Core Network

Summary

References


Plate

1. 
Map showing locations of stations in the proposed core streamflow network of Texas

Figures

1. 
Graph showing number of daily mean and annual peak streamflow stations in Texas, 1898–1996
2. 
Map showing locations of active and discontinued daily streamflow stations, October 1, 1998
3. 
Map showing hydrologic regions and major basins of Texas
4–9. 
Graphs showing relation between mean sampling error, number of streamflow-gaging stations, and planning horizon for:
4. 
Mean annual streamflow in hydrologic regions 1–4
5. 
Mean annual streamflow in hydrologic regions 5–8
6. 
Mean annual streamflow in hydrologic regions 9–11
7. 
25-year peak streamflow in hydrologic regions 1–4
8. 
25-year peak streamflow in hydrologic regions 5–8
9. 
25-year peak streamflow in hydrologic regions 9–11
10–11. 
Maps showing correlation of annual mean streamflow between paired streamflow-gaging stations in:
10. 
North Texas
11. 
South Texas
12–13. 
Maps showing correlation of annual peak streamflow between paired streamflow-gaging stations in:
12. 
North Texas
13. 
South Texas

Tables

1. 
Correlation coefficients of annual mean streamflows for paired stations in north Texas basins
2. 
Correlation coefficients of annual mean streamflows for paired stations in south Texas basins
3. 
Correlation coefficients of annual peak streamflows for paired stations in north Texas basins
4. 
Correlation coefficients of annual peak streamflows for paired stations in south Texas basins
5. 
Core network of streamflow-gaging stations in Texas



U.S. Department of the Interior, U.S. Geological Survey
Persistent URL: http://pubs.water.usgs.gov/wri014155
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Last modified: Friday, September 16 2005, 04:23:42 PM
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