38.92387 -108.44175 1472 America/Denver Hallock Basin US Mesa County, Colorado Hallock Basin US Mesa County, Colorado 0.1 38.91050 -108.46170 2.278 BARKLAY-USYJE HALBASI-USYJE 2063317347134 6 Mesa USGS 2001 County Boundary county administrative Mesa County 8077 8 148513 https://www.census.gov/programs-surveys/popest.html boundary Q153251 en:Mesa County, Colorado 66 Mesa USGS 2001 County Boundary county administrative Mesa County 8077 8 148513 https://www.census.gov/programs-surveys/popest.html boundary Q153251 en:Mesa County, Colorado