Grand Lake Clarity Standard Stakeholder Committee

Grand Lake Clarity Standard Stakeholder Committee

Grand Lake is Colorado’s largest natural lake, with important recreational and aesthetic values for visitors and residents.  It is also a component of the Colorado-Big Thompson (CBT) project that delivers water and energy to the Eastern Slope. Grand Lake’s clarity is impacted by operations of the CBT system as well as by natural and seasonal factors. The Stakeholder Committee worked together to gain mutual understanding of constraints on attainability and to develop an attainable and protective clarity standard. The proposal resulting from stakeholder efforts was approved by Colorado’s Water Quality Control Commission in 2016.