Monitor flows, fine sediment, and scour parameters at the stream reach level as a function of different watershed (sediment supply) and geomorphic conditions (channel type) in the Skagit River basin. We intend to infer how the differences we detect in the monitored parameters influence egg to fry survival, and monitor these changes over time where restoration actions have been taken to examine whether actions have been effective. The start and completion dates are September 1999 and December 2000, respectively. We will monitor the rate and grain size characteristics of intruding sediments, and the depth and frequency of scour in chinook spawning gravels during embryo incubation to fry emergence. We will use existing literature to infer egg to fry life stage survival from our monitoring results as a function of scour depth and fine sediment levels to determine the relative importance of fine sediment intrusion and scour for the egg to fry life stage. We propose to use Whitlock-Vibert egg boxes to monitor fine sediment intrusion rates in artifical chinook redd pockets. Egg boxes are buried in sample stream reaches when chinook are spawning and retrieved throughout the incubation period following peak flow events. Retrieved sediment samples are then sieved to ascertain the proportion of each sample by particle size based on dry weight. This project will help determine the relation between peak flow and survival w/in each hydroregion.