From abstract: The High Plains Regional Aquifer System Analysis study has developed a regional water-resources (and related) data storage and retrieval system to organize and preserve areal interpretive data. The system is general and can easily be adapted for other studies. This report documents the High Plains data base as well as the general system that is independent of the High Plains area.

From abstract: "In the Yampa River basin, Colorado-Wyoming, 35 major reservoirs and 2 transmountain diversion have been proposed to provide additional water for increasing uses. A multireservoir-flow computer model was used to simulate effects on streamflow of five potential options--one representing historical conditions and four representing various degrees of reservoir and transmountain-diversion development." It contains maps and tables.

Purpose: The purpose of the study was to (1) determine quantity and quality of urban runoff from the upper Grange Hall Creek drainage basin in Northglenn; (2) identify constituents exceeding water-quality standards for agricultural waters; (3) compare differences in quality between dry-weather flow, snowmelt runoff and rainfall runoff; (4) determine rainfall-runoff relationships; (5) investigate relationships between constituent concentrations, specific conductance, and streamflow; and (6) suggest, where appropriate, alternatives of urban-runoff management.

From abstract: Large increases in coal mining currently (1979) taking place in the Yampa River basin are expected to continue during the 1980's and may adversely impact both the ground-water and surface-water quality in the basin. One potential source of adverse impact is the dissolution of soluble minerals contained in the overburden material disturbed during the mining. This potential impact was investigated using digital ground-water transport-modeling techniques.

A three-dimensional model was created to estimate vertical hydraulic conductivity and regional ground-water flow rates in rocks within the San Juan Basin in New Mexico and Colorado.

From purpose: The purpose of this report is to evaluate the existing sediment-collection network, especially with regard to its capability of detecting changes in sediment transport due to mining.

From purpose: The purpose of this report is to summarize existing hydrologic information in the Piceance basin, to describe types of needed information, to suggest methods of obtaining needed information, and to outline standards for collection. The report also will provide guidance for comprehensive integrated hydrologic studies that will be necessary for water-resource planning in oil-shale development. These studies should provide hydrologic understanding that will benefit all aspects of water-resource and oil-shale development in the region.

From introduction: This report presents the data collected from six watersheds in northwestern Colorado and describes an initial step in the regionalization of water-quality characteristics and identification of transferability of data from individual, studied watersheds to unstudied watersheds in northwestern Colorado.