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Drainage area data for Alabama streams

Open-File Report 57-106

Prepared in cooperation with Alabama State Highway Department
By:
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Abstract

The drainage area of a river basin is an important parameter in many engineering equations used for hydrologic design. It is not a parameter, however, that always requires precise measurement. Factors in the hydrologic cycle such as rainfall, runoff, transpiration, and infiltration cannot be measured nearly as closely as drainage area. Largely for this reason, drainage areas are often measured to varying degrees of precision depending upon the immediate need, with little thought to some other use or some other user of the figure obtained. It can readily be appreciated that this practice, continued for long by many different agencies, will result in a heterogeneous collection of drainage area figures, often discordant and of an accuracy unknown to any but those who computed them.


Figures of drainage area published by various Federal agencies are frequently discrepant or contradictory, giving rise to confusion in the use of drainage area data. Seeking to better this situation, the Federal Inter-Agency River Basin Committee (FIARBC) in November 1951 published its Bulletin No. 4, Inter-Agency Coordination of Drainage Area Data.


That Bulletin recommended procedures to be followed by the interested Federal agencies “for coordinating drainage area data in the interest of promoting uniformity, reducing confusion and contradiction of published figures, and improving the ready availability of drainage area data pertaining to drainage basins of the United States and its possessions.”

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Drainage area data for Alabama streams
Series title:
Open-File Report
Series number:
57-106
Year Published:
1957
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Montgomery, AL
Description:
iii, 102 p.
Number of Pages:
117
Country:
United States
State:
Alabama