Fish Barrier Assessment
Adopt A Stream Foundation (AASF) staff are trained in the use of the Washington State Department of Fish and Wildlife standardized procedures for identifying in-stream barriers to fish migration. During the last decade, we completed surveys stream systems tributary to the Sammamish and Snohomish River systems. During that survey, we located over 300 manmade barriers to salmon migration. Contact us if you would like an analysis of culverts or other manmade structures in your stream.
The term “water typing” stems from the Washington State Forest Practices Act that regulates commercial tree harvesting. Per that regulation, streams are categorized by the State as Type “S” (Shoreline as defined in 90.58.030 RCW); Type “F” (Fish known to be present); Type “Np” (Non-Fish Perennial); or Type “Ns” (Non-Fish Seasonal). Most local governments have adopted regulations establishing buffers between
new development and streams…the size of that buffer is often related to
the “water type” of that stream. In conjunction with Salmonid Habitat Assessments outlined below, AASF “water typed” eight watersheds.
Fish traps, seines, and, on occasion, an electro-shocker are used by AASF Staff to determine the presence or absence of fish. All staff have Scientific Collector permits issued by the Washington State Department of Fish and Wildlife (WDFW).
Salmonid Habitat Assessment
As noted above, AASF completed salmonid (the group name for salmon, steelhead and trout) surveys in eight watersheds tributary to the Sammamish and Snohomish Rivers. Field data was collected using standard WDFW protocols. Trimble Global Positioning Systems were used to located survey sites, and data used to create detailed maps using ArcView software. Files were transferred to WDFW in an ACCESS data base.
Benthic Macro Invertebrate Analysis
Recently the Department of the Navy contracted with AASF to conduct benthic macro invertebrate surveys of several location at a radio station located on a tributary to the Stillaguamish River. AASF collected samples using standard quantitative analysis techniques. Resulting data provides the Navy with baseline information on the ecological health of the stream flowing through their site. That data was also transferred to the Puget Sound Stream Benthos website.
Many of our projects planting native plants to restore stream and wetland riparian zones from degradation generally caused by poor land use practices. We have extensive experience monitoring and maintaing these sites.
Salmon Spawning Surveys
AASF staff have conducted comprehensive salmon spawning surveys for several agencies. We are very experienced at identifying species…and really enjoy this type of work!