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Patterns and controls of gully growth along the shoreline of Lake Huron

✍ Scribed by Burkard, M. B.; Kostaschuk, R. A.


Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
352 KB
Volume
22
Category
Article
ISSN
0360-1269

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✦ Synopsis


An empirical approach was used to examine the morphology and behaviour of gullies along the eastern shoreline of Lake Huron, Canada. Gully and watershed dimensions and percentage vegetation cover of a sample of 44 gullies were measured from aerial photographs between 1930 and 1992. Gullies with larger watersheds had higher area growth rates. Larger gullies continue to expand over time while small gullies are more likely to become stable. Growth rates increased between 1955 and 1978 because of increased snowfall, extreme flow events, the extension of municipal drains, and the use of subsurface drainage. After 1970, efforts to rehabilitate gullies using drain pipes and check dams contributed to a decrease in gully growth rates.


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