Decades later, abandoned mines continue to haunt Colorado’s waterways
According to a 2017 study, there are over 23,000 abandoned mines across Colorado and 1,800 miles of streams that are impaired due to pollutants related to acid mine drainage.
Data viz: surveying Colorado River Basin maps
This collection of Colorado River Basin maps includes public domain images and other cartographic resources for depicting the watershed.
Map: monthly average precipitation
This map shows total rain and snowfall in the contiguous United States, every month from 1981 to the present. The map's color scale runs...
Map: weekly drought reports
This map depicts data from the National Drought Mitigation Center. Drought intensity categories are based on numerous indicators and local reports from more than...
Map: U.S. dams and reservoirs
The Global Reservoir and Dam Database (GRaND) is a survey listing about 7,000 larger dams and reservoirs worldwide, including 1,920 in the United States....
Map: daily nationwide snowpack
This map shows daily snowpack estimates for the contiguous United States since October 2003. Using the dropdown menu above the chart – or clicking...