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Riparian-vegetation controls on the spatial pattern of stream-channel instability, Little Piney Creek, Missouri

Water Supply Paper 2494

By:
and

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Abstract

The role of riparian vegetation is assessed quantitatively by using a five-decade record of valley bottom vegetation and channel dynamics developed from historical aerial photography. A 12-kilometer reach of a typical Ozarks stream was mapped using aerial photographs from 1938, 1948, 1955, 1965, 1976, and 1989; maps were then analyzed in a digital geographic information system. Analysis of sequential pairs of maps provides transition frequencies for assessing the relative areal rates at which riparian woodland, grassland, and cropland have been eroded or subjected to gravel aggradation. Results indicate that cropland and grassland have been no more likely to erode than woodland; cropland and grassland are slightly more susceptible to gravel deposition than woodland. These findings underscore the potential for complex responses of streams to a cumulative history of riparian and drainage-basin disturbances.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Riparian-vegetation controls on the spatial pattern of stream-channel instability, Little Piney Creek, Missouri
Series title:
Water Supply Paper
Series number:
2494
Edition:
-
Year Published:
1998
Language:
ENGLISH
Publisher:
U.S. Dept. of the Interior, U.S. Geological Survey : U.S. G.P.O. ; For sale by U.S. Geological Survey, Information Services,
Description:
iv, 33 p. :ill., fold. map ;28 cm.; 1 plate in pocket