|Percentage of Surface Waters with Impaired or Threatened Uses (state + EPA data):|
|Number of Impaired Waterbodies (as reported by the state):|
NOTE: Data limitations affect the accuracy of these rankings.
Rank counties in COLORADO or in the U.S. by assessed use impairments.
Rank watersheds in COLORADO by assessed use impairments
Rank states by assessed use impairments, impairments due to specific causes, or impairments due to specific sources