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: 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...