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Using terrain analysis to identify ravines in the Minnesota River Basin

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Abstract:

The Minnesota River Basin generates a disproportionately high amount of total suspended sediments to the Upper Mississippi River Basin. Many reaches in the Minnesota River Basin have impaired water quality due to turbidity. The primary sources of sediment in the Minnesota River Basin include upland erosion from agricultural land, streambluff slumping, and downcutting of ravines. No research has been conducted to date to quantify sediment contributions to the Minnesota River Basin from ravines. Geographic Information Systems (GIS) and terrain analysis were conducted using 3 and 30 m resolution digital elevation models in an attempt to identify the locations and geomorphic characteristics of ravines in the Minnesota River Basin. A combination of the streampower index (SPI) and profile curvature were used to identify the location of ravines. Field verification showed that this method was highly successful. GIS was used to quantify the length, width and volume of each ravine, and these attributes were used to classify ravines according to their sediment loss potential.
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Association:
Name: SOIL AND WATER CONSERVATION SOCIETY
URL:
http://www.swcs.org


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URL: http://citation.allacademic.com/meta/p255699_index.html
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MLA Citation:

Mulla, David., Nelson, Joel. and Wing, Shannon. "Using terrain analysis to identify ravines in the Minnesota River Basin" Paper presented at the annual meeting of the SOIL AND WATER CONSERVATION SOCIETY, TBA, Tucson, Arizona, <Not Available>. 2013-12-14 <http://citation.allacademic.com/meta/p255699_index.html>

APA Citation:

Mulla, D. J., Nelson, J. and Wing, S. "Using terrain analysis to identify ravines in the Minnesota River Basin" Paper presented at the annual meeting of the SOIL AND WATER CONSERVATION SOCIETY, TBA, Tucson, Arizona <Not Available>. 2013-12-14 from http://citation.allacademic.com/meta/p255699_index.html

Publication Type: Abstract
Abstract: The Minnesota River Basin generates a disproportionately high amount of total suspended sediments to the Upper Mississippi River Basin. Many reaches in the Minnesota River Basin have impaired water quality due to turbidity. The primary sources of sediment in the Minnesota River Basin include upland erosion from agricultural land, streambluff slumping, and downcutting of ravines. No research has been conducted to date to quantify sediment contributions to the Minnesota River Basin from ravines. Geographic Information Systems (GIS) and terrain analysis were conducted using 3 and 30 m resolution digital elevation models in an attempt to identify the locations and geomorphic characteristics of ravines in the Minnesota River Basin. A combination of the streampower index (SPI) and profile curvature were used to identify the location of ravines. Field verification showed that this method was highly successful. GIS was used to quantify the length, width and volume of each ravine, and these attributes were used to classify ravines according to their sediment loss potential.

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Associated Document Available SOIL AND WATER CONSERVATION SOCIETY
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