Currently, stream restoration activities in British Columbia emphasize the use of large woody debris, boulder, and other habitat structures (Slaney and Zaldokas 1997). The purpose of these works is to create locally varied hydraulic conditions; promote scour and pool formation; and create low velocity refuges. Little work, however, has been done to characterize the changes to local flow hydraulics, morphology and in stream habitat that results from these efforts. This study provides a methodology, through the use of field surveys and 2-dimensional hydrodynamic modelling, to assess morphological and hydraulic effects of instream LWD and boulder structures. Changes in available fish habitat were quantified through the use of Bovee (1978) probability-of-use curves. The selected field study site is a side channel of the Chilliwack River. Instream structures, installed in the summer of 1999, were subjected to a bankfull flow event that caused significant scour and bed morphology change. Results indicate that pool ...
Lacey, R.W.J., Millar, R.G.. 2001. Application of Two Dimensional Hydrodynamic Model for the Assessment and Design of Instream Channel Restoration Works. Ministry of Water, Land and Air Protection. Watershed Restoration Management Report. WRMR09
Topic: Watershed Restoration Program
Keywords: stream, habitat, restoration, fish, Chilliwack River, model
Other Identifier: Ministry of Forests
To copy the URL of a document, Right Click on the document title, select "Copy Shortcut/Copy Link", then paste as needed. Only documents available to the public have this feature enabled.