Since there are few field sampled areas on Oji Paper property, models based upon existing data immediately outside of the area provide valuable information on where priority areas for fish will be. Several models currently exist for predicting salmon habitat. We will focus on the use of one type of model: Habitat Intrinsic Potential (Burnett et al, 2007). HIP models relate geomorphic and stream flow characteristics to preferences for particular fish species.
The models we developed for this project are composed of 3 variables: gradient, valley width, and stream flow. For each variable, a suitability score from 0 to 1 is given for a range of measureable indicators based upon habitat preference. For example, Taimen seem to prefer gradients that are not too high. Most spawning grounds are around the 1% slope range, and thus receive a suitability score of 1. No spawning activity has been surveyed in slopes greater than 3%, therefore slopes greater than 3% receive a score of 3. Slope ranges in between are given scores that are intermediate. The following habitat curves present this information.