Doug Beyerlein, co-founder of Clear Creek Solutions, has led the engineering community in the development of new, more accurate tools to analyze the stormwater impacts of human activities on rivers, streams, and fish habitat.

Doug Beyerlein has conducted hydrologic modeling studies throughout the United States since the 1970s. He has provided consulting services to the USGS, EPA, FEMA, US Army Corps of Engineers, Bureau of Reclamation, and numerous state and local agencies.

He is licensed as a Registered Professional Engineer in Washington and California and is certified as a Professional Hydrologist by the American Institute of Hydrology. He is also a member of American Academy of Water Resources Engineers.

In his spare time he runs ultramarathons and is a three-time national champion.