Upper Black Squirrel

This study integrates new field data with information from previous studies and cooperating partners to refine our knowledge of the hydrogeology of the alluvial aquifer system in the Upper Black Squirrel Creek basin for the purposes of identifying potential sites for aquifer recharge and storage implementation.

The study area encompasses the entire Upper Black Squirrel Creek drainage basin and coincides with the designated ground water basin boundary (Fig.1). This basin encompasses an area of approximately 350 square miles and is entirely within east-central El Paso County, Colorado. All the streams in the basin are ephemeral, have dry sandy streambeds, and flow only in direct response to thunderstorms, spring snowmelt, or prolonged periods of rainfall. Consequently, these streams are not a reliable water source. Ground water from the alluvial aquifer has been the dominant water source since the late 1800’s.

The project was made possible by the support of the Arkansas Basin Roundtable and the El Paso County Water Authority and funding provided through a Water Supply Reserve Account (SB06-179) grant from the Colorado Water Conservation Board. Additional project funding was provided by the Colorado Geological Survey and Colorado Water Conservation Board with funding from the Colorado Department of Natural Resources Severance Tax Operational Fund. Severance taxes are derived from the production of gas, oil, coal, and minerals.


Upper Black Squirrel Creek Final report
Upper Black Squirrel Creek Appendices
Upper Black Squirrel Creek Figures
Upper Black Squirrel Creek Table 1
Upper Black Squirrel Creek Plates 1 through 5 (23M)
Upper Black Squirrel Creek Plates 6 through 12 (30M)
Upper Black Squirrel Creek Plates 13 through 19 (43M)