Access a range of climate-related reports issued by government agencies and scientific organizations. Browse the reports listed below, or filter by scope, content, or focus in the boxes above. To expand your results, click the Clear Filters link.

Screen capture of Report cover
Published
September 2021

For the six states of the U.S. Southwest (Arizona, California, Colorado, Nevada, New Mexico, and Utah)i , January 2020 through August 2021 have been exceptional in the instrumental climate record since 1895, with the lowest total precipitation and the third-highest daily average temperatures recorded, which together imposed an unyielding, unprecedented, and costly drought. This exceptional drought punctuates a two-decade period of persistently warm and dry conditions throughout the region. 

Screen capture of Report cover
Published
January 2021

Safe and secure water supplies are a continuing fundamental pursuit for life in the West. This 2021 Report provides an assessment of climate change impacts to water uses in the West and adds a new set of West-wide information based in paleohydrology. This report describes our collaborative actions taken to increase the reliability of water and power deliveries since 2016, including: science and research, planning, infrastructure sustainability, efficient hydropower production, and on-the-ground actions to meet needs for irrigation, municipalities, power, Tribes, and the environment. 

Report Cover
Published
April 2020

The heavy precipitation and flooding of 2019 was one for the history books. This report looks back at the major climate events and impacts of 2019 in the Missouri River Basin.

Climate Summaries Report Cover
Published
January 2017

These state summaries were produced to meet a demand for state-level information in the wake of the Third U.S. National Climate Assessment, released in 2014. The summaries cover assessment topics directly related to NOAA’s mission, specifically historical climate variations and trends, future climate model projections of climate conditions during the 21st century, and past and future conditions of sea level and coastal flooding. Click on each state to see key messages, figures, and and a summary of climate impacts in your state.

Cover of the Colorado Climate Change Vulnerability Study
Published
January 2015

Western Water Assessment, in collaboration with the University of Colorado Boulder and Colorado State University, conducted a broad study of climate vulnerability for the state of Colorado. Drawing from existing data and peer-reviewed research, the study summarizes the key challenges facing seven sectors: ecosystems, water, agriculture, energy, transportation, outdoor recreation and tourism, and public health.

Cover of the Climate Change in Colorado report
Published
August 2014

This report is a synthesis of climate science relevant for management and planning for Colorado's water resources. The report focuses on observed climate trends, climate modeling, and projections of temperature, precipitation, snowpack, and streamflow.

Cover of the Mapping the River Ahead report
Published
March 2014

As the climate changes, critical challenges face water managers, farmers, public agencies, and conservationists in the Colorado River Basin. This report by Carpe Diem West, in partnership with the Center for Natural Resources and Environmental Policy at the University of Montana, documents the concerns of some Colorado River thought leaders and their ideas about potential solutions and paths ahead.

Cover of the Colorado Drought Mitigation and Response Plan
Published
August 2013

This plan was developed to provide an effective and systematic means for the State of Colorado to reduce the impacts of water shortages over the short and long term.

Cover of the Southwest Assessment report
Published
May 2013

A contribution to the 2013 National Climate Assessment, this report is a summary and synthesis of the past, present, and projected future of the Southwest region’s climate. It emphasizes new information and understandings since publication of the previous national assessment in 2009.