Portland State University PDXScholar Master of Environmental Management Project Reports Environmental Science and Management 2018 Development of an Effective Shade Model for Water Quality Management in Oregon Erin Costello Portland State University Follow this and additional works at: https://pdxscholar.library.pdx.edu/mem_gradprojects Part of the Water Resource Management Commons Let us know how access to this document benefits ou.y Recommended Citation Costello, Erin, "Development of an Effective Shade Model for Water Quality Management in Oregon" (2018). Master of Environmental Management Project Reports. 39. https://pdxscholar.library.pdx.edu/mem_gradprojects/39 https://doi.org/10.15760/mem.42 This Project is brought to you for free and open access. It has been accepted for inclusion in Master of Environmental Management Project Reports by an authorized administrator of PDXScholar. Please contact us if we can make this document more accessible:
[email protected]. Development of an effective shade model for water quality management in Oregon by Erin Costello A report submitted in partial fulfillment of the requirements for the degree of Masters of Environmental Management Committee: Dr. Eugene Foster Dr. Yangdong Pan Dr. Daniel Sobota Ryan Michie The Department of Environmental Science and Management Portland State University 2018 i Abstract Warming stream temperatures degrade water quality by stressing cold-water species, promoting harmful algal blooms, lowering dissolved oxygen, and increasing the toxicity of some compounds. The influence of stream temperature on the survival of native salmon is of particular concern in the Pacific Northwest. Effective shade, the fraction of solar radiation blocked from reaching a stream, is directly related to in-stream temperature and can be manipulated by riparian management actions.