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CRC PUBLICATIONS |
Regional Models of Stream Channel Metrics
Mike Stewardson
Ron DeRose
Ciaran Harman
Publication Type:
Technical Report
This is a publication of the current CRC for Catchment Hydrology
CRC Program:
River Restoration
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Publication Keywords:
Channels
Rivers
Geometry
Geomorphology
Models
Hydraulics
Catchment hydrology
Regression analysis
Surveys
Equations
Flow rates
Uncertainty
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Abstract / Summary:
Preface
There is increasing concern for the remote impacts of land and water resources management decisions. The CRC for Catchment Hydrology has devoted considerable attention to developing models for assessing these impacts. This report provides models of channel geometry for use in these catchment-scale
models. Channel geometry is a primary factor controlling the flux of water and sediment through catchments as well as hydrologic interactions between
the channel and floodplain surface and subsurface flow pathways. This report describes the development of empirical equations to estimate hydraulic geometry
metrics throughout river networks based on a large set of river surveys in Victoria, Australia. Channel metrics include bankfull width, depth, shape, slope and discharge and at-a-station hydraulic geometry parameters. All models are provided with some indication of their error so users can assess the
uncertainty in their model predictions. In some cases, channel metric models do not perform so well, although measurement and sample errors can also be
very large if practitioners choose to survey rather than model channel hydraulics. An estimate of sample and measurement errors for some metrics is provided in report. Data sets used in this study are available via the
internet at www.toolkit.net.au.
Mike Stewardson
Program Leader - River Restoration
CRC for Catchment Hydrology
This report is available for downloading below.
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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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