The Smolt Passage Inseason Forecasts predict the arrival distributions of stocks of outmigrating juvenile salmon at several monitoring sites along the Snake and Columbia Rivers. For the real time analysis, we use PIT tag, Smolt Index and hydrosystem data. This tool is intended to provide information to the public and to help managers in decisions about mitigation efforts such as flow augmentation, spill scheduling and fish transportation. By providing current information on the status of particular salmon runs, the managers will be able to operate the Columbia River system in a manner that will maximize salmon survival while minimizing the costs of mitigation procedures. The Columbia River Salmon Passage model takes the predictions from RealTime and uses hydrological, fish behavioral and dam geometry information to simulate the movement and survival of juvenile salmonids through the remainder of the Columbia River system.
Composites are the combined data of the streams they include, treated as a single stock.
See ESA Listing Pages , Protected Resources, NMFS, NOAA, for detailed information on ESA listings and ESU status and descriptions of specific stocks. ESU consists of the production from spawning populations of fall chinook in the Snake, Tucannon, Clearwater, Salmon, Imnaha and Grande Ronde Rivers. Chinook Fall, Upper Columbia River consists of PIT tagged chinook where the run is designated as Unknown or Fall, the rearing type is designated as Unknown or Wild, the release site is on the Columbia River above the Snake Confluence, and the McNary detection date occurs after June 20 th of the same year the fish was released. The CRiSP.1 model uses the predicted passage distribution at Lower Granite to predict the passage at Little Goose, Lower Monumental, Ice Harbor, and McNary dams. The CRiSP.1 model uses the predicted passage distribution at McNary to predict the passage at John Day, The Dalles, and Bonneville dams.