An initiative of the Center for Environmental Journalism at the University of Colorado Boulder

Data viz: Lake Powell levels

Last update: September 21, 2022 Percent of total capacity Source: US Bureau of Reclamation

Data viz: explore our interactive dashboards for drought, precipitation and snowpack

These maps and visualizations let you interact with vital data on our water supply.

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. Data includes such parameters as...

Map: Winter photo galleries

Use this interactive map to browse photos and videos taken in wintertime from our expanding collection of free-to-use media captured by drones, planes and ground-based photographers.

Data viz: Navajo Lake levels

Last update: September 21, 2022 Percent of total capacity Source: US Bureau of Reclamation
precipitation map ecowest

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 from white (no precipitation), to blue (significant precipitation) to red (intense...

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.
us drought monitor ecowest dashboard

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 350 expert observers around the...

Map: New Mexico drought tracker

This map depicts data from the National Drought Mitigation Center. Drought intensity categories are based on numerous indicators and local reports from more than 350 expert observers around the...
Snowpack dashboard screenshot

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 a state on the map...