WFPA sought to understand sampling design elements for monitoring water temperature in stream networks throughout WA State. Summer stream temperatures for connected fish-bearing and non-fish-bearing segments of stream networks are correlated. They can be predicted from basin and reach-scale covariates, such as elevation, flow, channel gradient, and shade. Sample size and placement within the network can impact the precision and accuracy of predictions at any given network location.
Kleinschmidt built spatial stream network (SSN) statistical models to identify effective predictors and predict stream temperatures for unsampled locations along stream networks in the Satsop River and the Wynoochee River based on existing temperature monitoring data. For the Stillman basin, careful statistical design is used to improve temperature estimates and test design elements using reduced-sampling simulations.
WFPA will be able to provide insight and guidance on methods for statewide monitoring of stream network maximum temperatures based on data and verified model validation results provided by Kleinschmidt. These results will help guide sample sizes and selection of sampling locations for network monitoring to provide optimal modeling outcomes.
Regional Vice President
Paul Larson, P.E.
Paul Larson has 28 years of hydropower and infrastructure experience and is Kleinschmidt’s Northwest Regional Vice President. and specializes in the management of technical teams relative to engineering and utility operations. Paul has managed cross-disciplinary teams on a wide range of hydropower generation, transmission, and distribution projects and other projects for clients in the Northwest....