Preliminary Study of Future Water Supply Source Options, prepared by John C. Halepaska and Associates, Inc. for the Parker Water and Sanitation District, December 1985.

Final Report, Cherry Creek Water Resources Project Phase I Feasibility Study, prepared by Morrison-Knudsen Engineers, Inc. for the Colorado Water Resources and Power Development Authority, December 1987.

Engineering Report, Surface Water Storage Facilities in Upper Cherry Creek Basin, prepared by John C. Halepaska and Associates, Inc. for the Parker Water and Sanitation District, November 1990.

Engineering Report on Potential Surface Water Storage Facilities in the Upper Cherry Creek Basin, prepared by John C. Halepaska and Associates, Inc. for the Parker Water and Sanitation District, August 1994.

Preliminary Geotechnical Investigation, Newlin Gulch Dam Site, prepared by Knight-Piesold and Company for the Parker Water and Sanitation District, March 28, 1994.

Rueter-Hess Reservoir Site Preliminary Geotechnical Investigation, prepared by Knight-Piesold LLC for the Parker Water and Sanitation District, June 6, 1996.

Environmental Baseline Studies for the Rueter-Hess Reservoir, prepared by Woodward-Clyde Consultants for the Parker Water and Sanitation District, January 1999.

District Court Water Division 1, Colorado, Findings of Facts, Conclusions of Law, and Judgement and Decree in Case No. 85CW448(A), June 12, 1996.

District Court Water Division 1, Colorado, Findings of Facts, Conclusions of Law, and Judgement and Decree in Case No. 85CW448(B), April 1, 1998.

GLOSSARY [back]

acre-feet (ac-ft): A measure of volume that is equivalent to 325,851 gallons. Typically, a residential home will use approximately 0.7 ac-ft per year.

advanced wastewater treatment (AWT): A process added to normal wastewater treatment processes to further reduce concentrations in constituents of concern. In the Cherry Creek Basin, the constituent of concern is phosphorus as it relates to providing nutrients for algal growth in Cherry Creek Reservoir.

alluvial ground water: Shallow ground water aquifer associated with a stream channel. In Colorado, alluvial ground water is considered a tributary water source.

appropriation doctrine: The process of adjudicating water rights in Colorado. Rights are granted on a “first in time, first in right” basis.

aquifer: A geologic formation that yields water in useable quantities.

augmentation plan: A Court-approved plan that sets forth methodologies to re-use water while keeping the stream system whole to protect other water rights.

base load water: Water that is used consistently throughout the year to provide the average day demands.

bedrock aquifer storage: The method of delivering water into the aquifer through wells so that water can be stored underground with no evaporative losses.

carryover storage: The storage that remains in the reservoir after satisfying the demands on the reservoir. Carryover storage is one of the primary functions of a reservoir to allow excess water to be captured in wet years, and then stored for use in dry years.

Cherry Creek: A perennial stream which runs from south to north through eastern Douglas County, and is tributary to the South Platte River.

conjunctive use: The combined maximum beneficial use of surface water and ground water supplies by integrating the use of both systems, e.g., deep well injection of surface water supplies.

dam: A structure that is emplaced to impede, and impound, water.

dam axis: The centerline of the dam.

decant: To draw off the clear water above potentially more turbid water.

Denver Basin: A group of geologic formations which underlie a 6,700 square-mile area along the Front Range of Colorado and is comprised of four principal aquifers, the Dawson, Denver, Arapahoe, and Laramie-Fox Hills. This aquifer system provides municipal water supplies for many entities along the Front Range.

effluent: The product water from the advanced wastewater treatment process.

effluent storage: The storage of AWT effluent in the reservoir, by exchange.

in-basin supplies: Water supplies that originate within the Cherry Creek Basin, e.g., surface runoff from storm events.

in-priority: A legal term in the Colorado Appropriations System that denotes a time when water can legally be taken from a river by an existing water right. Conversely, out-of-priority is used to denote the time when water cannot legally be taken from a river by an existing water right (without augmentation).

manifolded pipeline: Several pipelines, each coming from individual wells, that unite into one pipeline which then delivers water to the reservoir.

Newlin Gulch: An ephemeral drainage that is tributary to Cherry Creek. Newlin Gulch is the drainage area in which the Rueter-Hess Reservoir will be located.

peaking water: Water that is used solely to meet peak day demands during the summertime.

potable supplies: Water supplies that meet all applicable drinking water standards.

Ranney collectors: A large-diameter, vertical shaft that is drilled through the water-producing zone. Horizontal shafts are then jacked out into the water-producing materials so water will drain, by gravity, back to the main vertical collector, and then water is pumped from the main vertical shaft. This method greatly increases the effective radius of the well and the production rate of the well.

reserve pool: A volume of water that is maintained in the reservoir under normal circumstances and is available as an emergency water supply under extreme drought conditions.

reservoir: The body of water that is impounded behind a dam.

stream reach: A defined, continuous segment of a stream.

terminal storage: A facility which provides final water storage prior to use.

tributary water: In Colorado, considered to be waters of the State that are subject to the Colorado appropriation doctrine.