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WSP09548
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Last modified
1/26/2010 2:54:24 PM
Creation date
10/12/2006 3:42:39 AM
Metadata
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Template:
Water Supply Protection
File Number
8240.200.17.F
Description
UCRBRIP Hydrology Sub-Committee
State
CO
Basin
Colorado Mainstem
Date
1/1/1985
Author
CWCB
Title
Critical Assessment of PHABSIM Model
Water Supply Pro - Doc Type
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<br />. " <br /> <br />. . . DRAFT . . . <br /> <br />UCRBCOMM 12 FEB 83 <br /> <br />DEFICIENCY 4: Utilization curves are a major part of the PHABSIM model; <br />however, the model only initializes a limited number of environmental <br />parameters (depth. velocity. substrate, temperature). Many curves have been <br />combined among rivers, and the overall error effect relating to the development <br />of curves might therefore be large. Furthermore. application of the curves in- <br />the model, specifically the equal weighting of the above-mentioned parameters. <br />might be erroneous. The development and application of the utilization curves <br />must be critically analyzed. <br /> <br />RECOMMENDATrON: Testing/validation of the model requires testing of the <br />following hypothesis 1: ut i lizat ion curves accurately indicate the "true" <br />habitat preferences of the endangered fishes; hypothesis 2) equal weightin9 of <br />environmental parameters is appropriate. <br /> <br />20 <br />
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