Breadcrumb Home News Warmer temperatures cause decline in key runoff measure May 11, 2017 Since the mid-1980s, the percentage of precipitation that becomes streamflow in the Upper Rio Grande watershed has fallen more steeply than at any point in at least 445 years. See the Article Recent News New aviation weather system improves US air travel efficiency and safetyApr 8, 2026 WRF-Hydro Application for National Water Availability Assessment (NWAA)Apr 7, 2026 HUMID Aims to Reduce the Life-threatening Impacts of Extreme Urban HeatApr 2, 2026 NSF NCAR technologies keep travelers on the moveDec 22, 2025 RAL Welcomes New Program Directors to Lead Key Research AreasDec 22, 2025 Congratulations to Kimberly Fewless: UCAR’s next President’s Leadership FellowJan 28, 2026 Just Released! FastEddy® 4.0Oct 27, 2025 NSF NCAR and UCAR researchers win prestigious AMS, AGU honorsDec 22, 2025 Spotlight on Extreme HeatJan 28, 2026