In June 2012, the Cherry Creek Basin Water Quality Authority (CCBWQA) completed the first phase of the Cherry Creek Stream Reclamation at 12-mile Park. In June 2014, CCBWQA completed the second phase of the Cherry Creek Stream Reclamation at 12-mile Park. In 2015, sediment began to deposit within the Phase 1 reach. In 2017, a breach occurred downstream of Phase 1. In November 2018, CCBWQA hired CH2M Hill Engineers, a subsidiary of Jacobs Engineering Group (Jacobs/ch2m), to provide alternative analysis and ultimately design of the third phase of Cherry Creek Stream Reclamation at 12-mile Park. Stream Reclamation reduces erosion and immobilizes nutrients (including phosphorus and nitrogen) in the soils, reducing nutrient loading to Cherry Creek and Cherry Creek Reservoir. The Project helps to maintain the existing water quality benefit of the previous phases which immobilize an estimated 52 pounds of phosphorus per year, and it provides new stream reclamation that immobilizes an estimated 1 pound of phosphorus per year.

The 2018 Annual Inspection of Pollution Reduction Facilities (PRFs) noted, “…that an area of shoreline adjacent to the boat ramp and previous shoreline is unraveling and threatening adjacent infrastructure and trees.” The East Boat Ramp Phase 2 Shoreline Stabilization Project is located on the east side of Cherry Creek Reservoir just south of the boat ramp. R2R Engineers provided the design of the shoreline stabilization. Shoreline stabilization minimizes erosion of shoreline soil and the attached phosphorus from being deposited directly into the reservoir. The Project immobilizes an estimated 12 pounds of phosphorus per year.