Cherry Creek Reservoir
Cherry Creek Reservoir is an artificial water body located in the Denver metropolitan area of Colorado, situated approximately 15 miles southeast of downtown Denver in Arapahoe County. Created by the construction of a dam on Cherry Creek, the reservoir serves multiple purposes including water supply, flood control, recreation, and wildlife habitat. The facility has become a significant component of the region's water infrastructure and a popular destination for outdoor recreation. The reservoir's construction in the mid-20th century represented an important development in water management for the rapidly growing Denver region, and it continues to play a vital role in the area's economic and environmental systems.[1]
History
The impetus for constructing Cherry Creek Reservoir emerged during the post-World War II era when Denver experienced rapid population growth and increasing water demands. Local water authorities recognized the need for expanded water storage capacity to ensure reliable supplies for the expanding metropolitan area. The Cherry Creek Dam was constructed between 1950 and 1956 as part of a broader regional water management initiative coordinated by the U.S. Army Corps of Engineers. The project represented a significant engineering undertaking for the period, utilizing modern construction techniques appropriate to the semi-arid Colorado environment. The completion of the dam and the subsequent filling of the reservoir marked a transformative moment for Cherry Creek, converting what had previously been a seasonal waterway subject to significant flooding into a controlled water storage facility.
The planning and authorization process for the reservoir involved multiple stakeholders including federal agencies, state water authorities, local governments, and agricultural interests. The project's development occurred within the context of broader Colorado water law and interstate compacts governing water allocation among states sharing the South Platte River basin. The reservoir's construction provided not only storage capacity but also improved flood control capabilities, addressing a significant vulnerability that Denver faced during periods of heavy spring runoff and summer thunderstorms. The completion of the project was celebrated as an achievement in regional development and water security, with the reservoir quickly becoming integrated into the area's cultural and recreational landscape.[2]
Geography
Cherry Creek Reservoir occupies a geographic position in the transitional zone between the Denver metropolitan area and the more rural areas to the southeast. The reservoir extends approximately 12 miles in length and covers approximately 5,000 acres at full pool elevation, making it one of the larger water bodies in the immediate Denver region. The watershed that feeds the reservoir encompasses a significant area of central Colorado, with Cherry Creek originating in the foothills west of Denver and flowing through the city before reaching the reservoir. The topography surrounding the reservoir includes a mix of prairie grassland, cottonwood riparian corridors, and developed recreational areas, reflecting the varying land uses that characterize the Denver metropolitan interface zone.
The geology of the Cherry Creek Reservoir area is typical of the eastern Colorado plains, characterized by alluvial deposits and sedimentary formations overlying the deeper Precambrian basement rocks. The soils in the region are generally sandy and loamy, with relatively low organic content typical of semi-arid environments. The elevation of the reservoir is approximately 5,400 feet above sea level. The climate at Cherry Creek Reservoir reflects the characteristic semi-arid conditions of the Denver region, with modest precipitation averaging around 16 inches annually, concentrated primarily during the spring and early summer months. The surrounding vegetation includes native shortgrass prairie species, along with introduced landscaping in developed areas. The reservoir supports a diverse aquatic ecosystem, with fish populations including walleye, northern pike, catfish, and various panfish species, making it a significant location for sport fishing in the region.[3]
Recreation and Attractions
Cherry Creek Reservoir has developed into a major recreational destination for residents of the Denver metropolitan area and visitors to Colorado. The facility includes multiple developed recreational areas providing public access to the water and surrounding lands. Cherry Creek State Park, located adjacent to the reservoir, encompasses approximately 5,000 acres and offers facilities for boating, fishing, swimming, and picnicking. The state park includes multiple boat launch facilities equipped with paved ramps, parking areas, and associated amenities. The reservoir's relatively calm waters during non-flood periods make it suitable for a variety of water-based recreation activities including sailing, windsurfing, and kayaking. Shore-based activities include picnicking, walking, and wildlife observation, with designated trails providing public access to portions of the shoreline.
Fishing at Cherry Creek Reservoir represents one of the primary recreational uses, with the Colorado Parks and Wildlife division maintaining active fish stocking programs to support sport fishing opportunities. The reservoir is regularly stocked with walleye and northern pike, and naturally reproducing populations of catfish and panfish provide additional fishing opportunities. Fishing access points are distributed around the reservoir, with both boat and shore-based fishing opportunities available. The reservoir's fish populations support both recreational and subsistence fishing activities, contributing to the economic activity associated with outdoor recreation in the region. Beyond aquatic recreation, the surrounding Cherry Creek State Park includes hiking and biking trails, picnic areas with facilities for group gatherings, and interpretive displays providing information about the reservoir's natural and cultural features. The park's location in close proximity to the Denver metropolitan area makes it easily accessible to urban residents seeking outdoor recreation opportunities.[4]
Water Management and Environmental Function
Cherry Creek Reservoir plays a critical role in the water management and flood control systems serving the Denver metropolitan region. The facility functions as a major storage component in the South Platte River basin water system, capturing and storing runoff from the Cherry Creek watershed during periods of high water flow. This storage capacity provides flexibility in water distribution, allowing water authorities to maintain consistent supply during periods of lower natural streamflow. The reservoir's flood control function is particularly significant during spring snowmelt and summer thunderstorm periods, when Cherry Creek can experience rapid increases in flow. The dam's controlled release mechanisms allow management of downstream flow rates, reducing flood hazards to areas downstream from the reservoir.
The environmental functions of the reservoir extend beyond flood control and water supply to include habitat provision for wildlife species. The reservoir and its associated riparian corridors support waterfowl populations, including migratory species that utilize the area during spring and fall migration periods. The cottonwood forests and wetland areas adjacent to the reservoir provide nesting and foraging habitat for various bird species. The open water habitat supports aquatic invertebrate communities that form the base of the food web supporting fish and waterfowl populations. However, like many reservoirs in the region, Cherry Creek Reservoir faces water quality challenges including sediment accumulation and periodic algal blooms related to nutrient loading. Water quality monitoring and management programs have been implemented to address these challenges and maintain recreational usability of the reservoir.
The reservoir operates within the complex legal and institutional framework governing Colorado water rights and allocation. The project's operation is managed by the U.S. Army Corps of Engineers, which coordinates with state and local water agencies to balance competing demands for storage, recreation, flood control, and environmental protection. The operation of the reservoir involves periodic adjustments to water levels based on seasonal conditions, water demands, and flood control requirements. These operational decisions involve coordination with downstream water users and environmental agencies responsible for managing impacts on riparian ecosystems and species dependent on particular stream conditions.
Cherry Creek Reservoir represents an important component of Colorado's water infrastructure, providing essential functions in water supply, flood control, and recreation for the Denver metropolitan region. The facility continues to evolve as water managers address challenges related to population growth, climate variability, and environmental protection. Future management of the reservoir will likely involve continued attention to water quality, ecosystem management, and recreational facility improvements to meet the needs of the growing urban population in the Denver area.