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Data Series 333

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Prepared under the auspices of the U.S. Agency for International Development

Streamflow Characteristics of Streams in the Helmand Basin, Afghanistan

By Tara Williams-Sether

USGS Afghanistan Project Product Number 167
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Data Series
333 PDF (5.32 MB)
Abstract

Statistical summaries of streamflow data for all historical streamflow-gaging stations for the Helmand Basin upstream from the Sistan Wetlands are presented in this report. The summaries for each streamflow-gaging station include (1) manuscript (station description), (2) graph of the annual mean discharge for the period of record, (3) statistics of monthly and annual mean discharges, (4) graph of the annual flow duration, (5) monthly and annual flow duration, (6) probability of occurrence of annual high discharges, (7) probability of occurrence of annual low discharges, (8) probability of occurrence of seasonal low discharges, (9) annual peak discharge and corresponding gage height for the period of record, and (10) monthly and annual mean discharges for the period of record.

This study was funded by Interagency Agreement 07C442100KB between the U.S. Agency for International Development and the U.S. Geological Survey.

Version 1.1

Posted July 2008

Version History
Suggested citation:

Williams-Sether, Tara, 2008, Streamflow characteristics of streams in the Helmand Basin, Afghanistan: U.S. Geological Survey Data Series 333, 341 p.


Contents

Abstract

Introduction

History of the stream-gaging program in Afghanistan

Explanation of station summaries

Manuscripts

Statistics of monthly and annual mean discharges

Monthly and annual flow duration

Probability of occurrence of high or low discharges

Data considerations

Selected References

Streamflow statistics


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