Colorado Watershed Assembly STAFF
Casey Davenhill, Executive Director
As Administrator for the Colorado Watershed Network (back in the last century), and Executive Director for the Colorado Watershed Assembly since 2013, Casey has a long history of coordination with River Watch, the Cherry Creek Stewardship Partners, the Colorado Healthy Rivers Fund and other important programs and projects facilitated by these two organizations. Casey loves to share her enthusiasm for public engagement and participation to find what is working and do more of that. She wants to encourage you all to stay involved with important issues of the day, especially water. Water connects us all!
Diane Kielty, Program Manager
Diane came on board with the Colorado Watershed Assembly in 2015. Along with providing strategic guidance and operational support, she organizes and coordinates the Colorado Healthy Rivers Fund program, Chatfield Watershed Authority program, and serves as oversight on all project activities.
Diane’s background in watershed work began in 2007 as a Project Development Consultant with the Clear Creek Watershed Foundation. She has managed project agreements with organizations including the United States Environmental Protection Agency, United States Department of Agriculture-Forest Service, Colorado Department of Public Health & Environment, and Colorado Division of Reclamation, Mining, & Safety. Diane served the Foundation as Project Manager for remediation of large-scale nonpoint source pollutants contributing to the State of Colorado’s 303(d) list of impaired waters for trace metals.
Donny Roush / Project Manager
Donny Roush (project manager), a Certified Master Environmental Educator with 30 years of experience, was a member of the Statewide Water Education Action Plan (2021) task force, has been a member of the Guidelines for Excellence in Environmental Education (national environmental education standards) Trainers’ Bureau since 2006, and was on the writing team for the latest revision of national Environmental Education Program Guidelines (2022). He is the only Coloradan to do all three. Prior to joining Colorado Watershed Assembly, Donny developed and implemented Denver's award-winning Stormwater Education and Outreach Program, reaching more than 15,000 students through watershed investigations from 2011-2024. His Master of Science degree in Human Dimensions of Natural Resources is from The Ohio State University.
Tammi Renninger, ElephantFish GIS Services / spatial Data Analyst
Tammi is happy to be working with CWA doing something she loves to do...analyzing spatial data and presenting spatial data for educational purposes. As a GIS professional with a background in hydrogeology and environmental sciences Tammi works with amazing hydrogeologists, geophysicists, ecologists, and engineers all throughout Colorado in support of various water rights issues, water quantity analyses, Colorado’s Decision Support Systems, and environmental remediation sites. As part of the CWA team, Tammi has presented informational workshops for the Purgatoire Watershed Partnership as well as at the Sustaining Colorado Watersheds Conference. She also creates maps, both large and small, to help move CWA’s message of collaboration, such as the Healthy Rivers Fund, forward throughout our community. She is a Colorado mountain dweller who enjoys time spent surrounded by rocks, plants, water, and especially her family and friends. If she’s not making a map, then she finds other ways to support her community through anything from robots to myco-restoration.
Evie Guay / Communications coordinator
Having grown up in Colorado, Evie has seen the importance and variability of water throughout Colorado. In this role, Evie connects with CWA’s virtual communities and network to share programs and watershed activities across Colorado through the Inflow Newsletter and the organization’s social media platforms. She works to spread awareness and inspire action through creating opportunities for community engagement and education. Additionally, Evie is the manager of the Headwaters River Journey Museum at the Headwaters Center in Winter Park. When not working, Evie enjoys the rivers while fly fishing.