National Water-Quality Assessment (NAWQA) Program - South Platte River Basin
Groundwater Quality in Mountainous Areas
Past Groundwater Activities
Map and Data for This Study
Provide a broad overview of the quality of groundwater in the forested
urbanized crystalline bedrock aquifer in the mountainous areas of
Relate observed groundwater quality to overlying land use.
Sampled 27 domestic wells (greater than 400 feet) randomly distributed
throughout the crystalline bedrock aquifer in mountainous areas.
- Targeted Physical and Chemical Data:
Physical parameters, major ions, nutrients, trace elements, radon, pesticides, volatile organic compounds (VOCs), dissolved organic compounds (DOC)
and dissolved gasses.
- Selected Results:
Groundwater quality in the forested mountain areas generally was better
than in other land-use areas studied in the basin. However, the potential
for degraded groundwater may increase as mountain communities grow.
Median radon concentrations were higher in groundwater from the crystalline
aquifer in the forested mountain areas than in the plains. High concentrations
of radon in the basin were directly related to local geology.
VOCs, derived from gasoline and cleaning solvents, were detected in
groundwater in forested mountain areas. Groundwater in crystalline
bedrock may be susceptible to contamination from surface sources.