As a result of the diagnostic portion of the 314 Clean Lakes Study on Bear lake, three alternatives were selected because of their expected water quality improvement potential, technical feasibility, environmental impact, and estimated cost: (1) site specific recommendations—Upper Bear River watershed management, Dingle Marsh modifications, and the use of BMP's in two small problem watersheds within the Bear Lake drainage; (2) a site specific basinwide water quality management plan; and (3) an environment information and education program. Because of the limitation in Phase II Clean Lakes moneys, the implementation of the diagnostic study was difficult. A case history is presented on how the project was continued. Because of the location of Bear Lake, four Federal agencies and three States became involved in the existing Bear Lake Preservation Project. An example of the value of a Regional Commission and the important coordinating role played by this type of agency will be discussed.