OF-05-02 Geologic Map of the Castle Rock North Quadrangle, Douglas County, Colorado (detail)


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STATEMAP is a competitive, matching-funds grant program between the state geological surveys and the United States Geological Survey for conducting basic geologic mapping. The program is one of three components of the National Cooperative Geologic Mapping Program (NCGMP). A broad-based stakeholder group comprises the Colorado Geologic Mapping Advisory Committee (GMAC) that prioritizes the areas for mapping. The GMAC has ranked priorities for geologic mapping in Colorado. Each year the state geological surveys submit proposals to a national review panel for monetary awards up to $300,000. Each grant requires a 50/50, hard-money match. Colorado has historically been in the top five grant awards in the nation.

The CGS joined the STATEMAP program shortly after it began in 1992. Since that time, STATEMAP has helped support the production of more than 150 detailed quadrangle maps of bedrock and surficial deposits across 25 counties (Arapahoe, Chaffee, Clear Creek, Costilla, Delta, Douglas, Eagle, Elbert, El Paso, Fremont, Garfield, Jefferson, Lake, La Plata, Las Animas, Mesa, Moffat, Montrose, Park, Pitkin, Pueblo, Rio Blanco, Routt, Summit, and Teller). This geologic information is regularly incorporated into decision-making on a wide variety of local and countywide issues that include:

  • protecting ground water
  • locating new municipal wells
  • siting waste-disposal facilities
  • identifying potential mineral resources
  • protecting homeowners from geologic hazards
  • addressing a broad spectrum of land-use concerns

The results of Colorado’s STATEMAP program are used by planners and decision makers at the state, county, and municipal levels of government and as the scientific basis for preparing:

  • a statewide inventory of mapped landslides
  • various mineral resource maps using CGS-mapped quadrangles
  • a resource map of sand and gravel for Garfield County
  • a geologic hazard map for Clear Creek County
  • a post-wildfire debris flow map in La Plata County
  • a geologic hazard map for Montrose County
  • a landslide susceptibility map for the city of Colorado Springs, which has suffered losses of $75 million from landslides
  • a Denver Basin aquifer map

Contact Matt Morgan, the STATEMAP Program Manager with any questions.