Impacts from climate change make headline news. Intense precipitation events followed by extended periods of dryness or drought are common. Snowpack supporting stream flows is diminished and melts earlier in the season. Storm surges and rising sea levels inundate coastline communities. The southwestern United States suffers from prolonged drought of unprecedented duration and intensity. Available surface water and groundwater supplies supporting public water supply, agriculture, hydroelectric power, recreation, and other uses are stressed, or at times unavailable.