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CRC PUBLICATIONS |
A Sand Management Strategy for the Glenelg River and its Tributaries, Western Victoria
Ian Rutherfurd,
Mike Budahazy
Publication Type:
Technical Report
This is a publication of the initial CRC for Catchment Hydrology
CRC Program:
Waterway Management (Previous CRC)
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Publication Keywords:
Streams (in Natural Channels)
Tributaries
Sand
Bed Load Transport
Flow Regulation
River Management
Stream Flow
Catchment Areas
Erosion
Sedimentation
Quarrying (the term used for Extraction)
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Abstract / Summary:
Synopsis
Sand accumulation in stream channels is the major stream management issue in the Glenelg River catchment. Sheet, rill, and gully erosion of granite portions of the catchment have filled the Glenelg and its tributaries with about six million cubic metres of sand. Little sand is now coming from the catchments, so the major source of sand to the Glenelg and Wannon Rivers is the lower reaches of certain tributary streams. These tributaries introduce discrete slugs of sand into the Glenelg and Wannon rivers that often dam the main river, and move downstream. As these tributary junction plugs move downstream they attenuate, gradually giving way to a succession of small 'slugettes'. Sand is moving through the stream network at a slow rate, with only tens of thousands of metres per year being removed by bedload transport. This low transport rate is, in part, because of regulation to the river Rocklands Reservoir. Artificial sand extraction is the best management option for the sand. Past extraction has
removed only a fraction of the sand that is in storage. Extraction from the tributaries should be discouraged, whereas, there are four specific sites on the Glenelg River from which more than 20 000 cubic metres of sand could be extracted each year. Extraction of this magnitude would lead to considerable long-term improvement in the condition of the Glenelg River.
This report is not currently available for downloading. Printed copies are available from the Centre Office.
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Centre Office:
CRC for Catchment Hydrology
Dept of Civil Engineering
Building 60
Monash University Vic 3800
Tel: +61 3 9905 2704
Fax: +61 3 9905 5033
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