New technology with marking fish, videography and observation make this type of research productive today. Effect On Salmon Cooperative research with Highway Maintenance. Fish behavior will be evaluated by a combination of video and diver observations, net sampling. If fish passage is required for juveniles all year, more information is needed to model appropriate flows in all watersheds. To design for peak juvenile movement in May and peak adult movement in January, considerable information is needed.
Practical methods utilizing modeling is essential.
It would take 10-20 years to obtain the data from stream gauging. A model based on analysis of basin or watershed characteristics may work, and such a method may be in use today. The product of this research would be an expansion of models currently used by WDFW to predict fish flows, where gauged data is not available. The information from such a model would be the basis for design of stream passage facilities, increasing certainty that fish passage efforts will be successful. This project involves developing design information related to initial installations where new channels or new culverts will be used, emphasizing juvenile salmon.