WWRC 93-16
A Test of the Precision of the Habitat Quality Index Model II
Abstract
We assessed the precision of the habitat
quality index (HQI) model II, a model for rating habitat
quality in trout streams and predicting fish standing
stocks. This is a detenninistic model, and its precision
depends on the ability of observers to generate similar
input values. Three 50-m stream reaches were evaluated
by three teams per reach. Among individual attributes,
measurements of cover and eroding bank had the greatest
variability. Our results demonstrate the need for more
thorough definition of these attributes to reduce subjectivity
and associated measurement variability.
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