County Groundwater Reports

The CGS is producing comprehensive county-wide geology and groundwater studies tailored to inform the public, planners, and policy-makers on the intricacies of local geology and groundwater resources. The work addresses all aquifers that are currently utilized in each county including alluvial, sedimentary, and crystalline formations. Patterned after a county-wide groundwater resource series produced in the 1960s through the mid-1970s, these current studies are intended to address counties omitted from the earlier series where development pressures are straining current water resources. These publications and GIS datasets will support existing decision-support and monitoring systems. The work is also a derivative of our ongoing STATEMAP efforts which is part of the National Cooperative Mapping program focused on detailed 1:24,000 scale 7.5 quadrangle geologic mapping. It builds upon other work by the CGS, including the 2003 Ground Water Atlas of Colorado. The importance of groundwater is clearly recognized in Colorado’s Water Plan and these county-wide reports will assist in sound management of existing and increasingly scarce resources.

Each study takes one to two years to complete. Counties completed to date and published include: Douglas, Park, Chaffee, and Mesa. Each of these publications are available as a free Zip download. The Elbert and La Plata counties are currently in progress and scheduled for completion during 2019.