skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Climate Change Impacts on Streamflow and Subbasin-Scale Hydrology in the Upper Colorado River Basin

Journal Article · · PLoS ONE
 [1];  [2];  [2]
  1. Indiana University, Bloomington, IN (United States)
  2. Santa Clara University, Santa Clara, CA (United States)

In the Upper Colorado River Basin (UCRB), the principal source of water in the southwestern U.S., demand exceeds supply in most years, and will likely continue to rise. While General Circulation Models (GCMs) project surface temperature warming by 3.5 to 5.6°C for the area, precipitation projections are variable, with no wetter or drier consensus. We assess the impacts of projected 21st century climatic changes on subbasins in the UCRB using the Soil and Water Assessment Tool, for all hydrologic components (snowmelt, evapotranspiration, surface runoff, subsurface runoff, and streamflow), and for 16 GCMs under the A2 emission scenario. Over the GCM ensemble, our simulations project median Spring streamflow declines of 36% by the end of the 21st century, with increases more likely at higher elevations, and an overall range of -100 to +68%. Additionally, our results indicated Summer streamflow declines with median decreases of 46%, and an overall range of -100 to +22%. Analysis of hydrologic components indicates large spatial and temporal changes throughout the UCRB, with large snowmelt declines and temporal shifts in most hydrologic components. Warmer temperatures increase average annual evapotranspiration by ~ 23%, with shifting seasonal soil moisture availability driving these increases in late Winter and early Spring. For the high-elevation water-generating regions, modest precipitation decreases result in an even greater water yield decrease with less available snowmelt. Precipitation increases with modest warming do not translate into the same magnitude of water-yield increases due to slight decreases in snowmelt and increases in evapotranspiration. For these basins, whether modest warming is associated with precipitation decreases or increases, continued rising temperatures may make drier futures. Subsequently, many subbasins are projected to turn from semi-arid to arid conditions by the 2080 s. In conclusion, water availability in the UCRB could significantly decline with adverse consequences for water supplies, agriculture, and ecosystem health.

Research Organization:
Indiana Univ., Bloomington, IN (United States)
Sponsoring Organization:
USDOE Office of Science (SC); U.S. Environmental Protection Agency
Grant/Contract Number:
RD-83419101-0
OSTI ID:
1627630
Journal Information:
PLoS ONE, Vol. 8, Issue 8; ISSN 1932-6203
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English

References (62)

Model Projections of an Imminent Transition to a More Arid Climate in Southwestern North America journal May 2007
Changes toward Earlier Streamflow Timing across Western North America journal April 2005
Snow depth and streamflow relationships in large North American watersheds journal January 2008
Description and evaluation of the bergen climate model: ARPEGE coupled with MICOM journal July 2003
Warming may create substantial water supply shortages in the Colorado River basin journal January 2007
Sensitivity of streamflow in the Colorado Basin to climatic changes journal July 1991
Assessment of climate change impacts on hydrology and water quality with a watershed modeling approach journal April 2013
Human-Induced Changes in the Hydrology of the Western United States journal February 2008
Parallel climate model (PCM) control and transient simulations journal October 2000
STATSGO soil characteristics for the conterminous United States report January 1997
Potential Implications of PCM Climate Change Scenarios for Sacramento–San Joaquin River Basin Hydrology and Water Resources journal January 2004
Detection and Attribution of Streamflow Timing Changes to Climate Change in the Western United States journal July 2009
The simulation of SST, sea ice extents and ocean heat transports in a version of the Hadley Centre coupled model without flux adjustments journal February 2000
Above-ground growth responses of forest trees to elevated atmospheric CO2 concentrations.
  • Medlyn, B. E.; Rey, A.; Barton, C. V. M.
  • The impact of carbon dioxide and other greenhouse gases on forest ecosystems. Report No.3 of the IUFRO task force on environmental change https://doi.org/10.1079/9780851995519.0127
book January 2001
Potential impacts of a warming climate on water availability in snow-dominated regions journal November 2005
Hydro-climatic data network (HCDN); a U.S. Geological Survey streamflow data set for the United States for the study of climate variations, 1874-1988 report January 1992
Using the SWAT model to assess impacts of land use changes on runoff generation in headwaters: IMPACT OF LAND USE CHANGES ON RUNOFF IN UPSTREAM BASINS OF TGR journal December 2012
THE WCRP CMIP3 Multimodel Dataset: A New Era in Climate Change Research journal September 2007
The next generation of scenarios for climate change research and assessment journal February 2010
Impact of disturbed desert soils on duration of mountain snow cover journal January 2007
Emissions pathways, climate change, and impacts on California journal August 2004
GFDL's CM2 Global Coupled Climate Models. Part I: Formulation and Simulation Characteristics journal March 2006
The implications of climate change scenario selection for future streamflow projection in the Upper Colorado River Basin journal January 2012
Global and regional drivers of accelerating CO2 emissions journal May 2007
Greenhouse warming and the 21st century hydroclimate of southwestern North America journal December 2010
A multimodel ensemble approach to assessment of climate change impacts on the hydrology and water resources of the Colorado River basin journal January 2006
Comment on “When will Lake Mead go dry?” by T. P. Barnett and D. W. Pierce: COMMENTARY journal September 2009
Modelling hydrology and water quality in the pre-alpine/alpine Thur watershed using SWAT journal February 2007
The New Meteorological Research Institute Coupled GCM(MRI-CGCM2). Model Climate and Variability. journal January 2001
Development of a snowfall–snowmelt routine for mountainous terrain for the soil water assessment tool (SWAT) journal May 2002
Climate change sensitivity assessment of a highly agricultural watershed using SWAT journal July 2009
The utility of daily large-scale climate data in the assessment of climate change impacts on daily streamflow in California journal January 2010
Simulated Hydrologic Responses to Climate Variations and Change in the Merced, Carson, and American River Basins, Sierra Nevada, California, 1900–2099 journal January 2004
Global pattern of trends in streamflow and water availability in a changing climate journal November 2005
Comparison of different efficiency criteria for hydrological model assessment journal January 2005
Large area Hydrologic Modeling and Assessment part i: Model Development journal February 1998
Changes in Snowmelt Runoff Timing in Western North America under a `Business as Usual' Climate Change Scenario journal January 2004
Uncertainty in hydrologic impacts of climate change in the Sierra Nevada, California, under two emissions scenarios journal February 2007
Long-range experimental hydrologic forecasting for the eastern United States journal January 2002
Evaporation: an introductory survey. journal February 1956
The Community Climate System Model Version 3 (CCSM3) journal June 2006
Impacts of long-term temperature change and variability on electricity investments journal March 2021
Model projections of an imminent transition to a more arid climate in southwestern North America text January 2007
When will Lake Mead go dry?: WHEN WILL LAKE MEAD GO DRY? journal March 2008
Changes in the Timing of Snowmelt and Streamflow in Colorado: A Response to Recent Warming journal May 2010
A COMPARISON OF DELTA CHANGE AND DOWNSCALED GCM SCENARIOS FOR THREE MOUNTAINOUS BASINS IN THE UNITED STATES 1 journal April 2000
Projections of 21st Century Sierra Nevada Local Hydrologic Flow Components Using an Ensemble of General Circulation Models 1 journal August 2012
Ocean Circulation and Tropical Variability in the Coupled Model ECHAM5/MPI-OM journal August 2006
The Effects of Climate Change on the Hydrology and Water Resources of the Colorado River Basin journal January 2004
Stomatal Sensitivity to Carbon Dioxide and Humidity: A Comparison of Two C journal April 1983
River flow forecasting through conceptual models part I — A discussion of principles journal April 1970
Hydrologic Implications of Dynamical and Statistical Approaches to Downscaling Climate Model Outputs journal January 2004
Sustainable water deliveries from the Colorado River in a changing climate journal April 2009
Comparison of model and observed regional temperature changes during the past 40 years journal June 2000
Climate change scenarios for the California region journal January 2008
A Long-Term Hydrologically Based Dataset of Land Surface Fluxes and States for the Conterminous United States* journal November 2002
A multimodel ensemble approach to assessment of climate change impacts on the hydrology and water resources of the Colorado River Basin journal January 2007
Warming asymmetry in climate change simulations journal January 2001
Response of Colorado River runoff to dust radiative forcing in snow journal September 2010
Effects of projected climate change on the hydrology in the Mono Lake Basin, California journal August 2012
Response to CO 2 Transient Increase in the GISS Coupled Model:Regional Coolings in a Warming Climate journal February 1999
The CSIRO Mk3 Climate System Model text January 2002

Cited By (19)

Investigation of Climate Change Impact on Water Resources for an Alpine Basin in Northern Italy: Implications for Evapotranspiration Modeling Complexity journal October 2014
Climatic and physiographic controls of spatial variability in surface water balance over the contiguous United States using the Budyko relationship: BUDYKO WATER BALANCE MODEL OVER CONUS journal September 2017
Long-Term Trend Analysis of Precipitation and Air Temperature for Kentucky, United States journal February 2016
The twenty-first century Colorado River hot drought and implications for the future: COLORADO RIVER FLOW LOSS journal March 2017
The River Network Toolkit - RivTool journal October 2018
A Review of Water Quality Responses to Air Temperature and Precipitation Changes 2: Nutrients, Algal Blooms, Sediment, Pathogens journal December 2018
A Review of Water Quality Responses to Air Temperature and Precipitation Changes 1: Flow, Water Temperature, Saltwater Intrusion journal December 2018
Comparison of CMIP3 and CMIP5 projected hydrologic conditions over the Upper Colorado River Basin: CMIP3-CMIP5 UPPER COLORADO RIVER PROJECTIONS journal January 2016
Sea surface temperature change in the Black Sea under climate change: A simulation of the sea surface temperature up to 2100 journal July 2018
Evaluating species-specific changes in hydrologic regimes: an iterative approach for salmonids in the Greater Yellowstone Area (USA) journal March 2017
Quantifying Whitewater Recreation Opportunities in Cataract Canyon of the Colorado River, Utah: Aggregating Acceptable Flows and Hydrologic Data to Identify Boatable Days: Identifying Boatable Days in Cataract Canyon journal June 2016
Development of a New Quantile-Based Method for the Assessment of Regional Water Resources in a Highly-Regulated River Basin journal June 2019
Hydrological Modeling of Climate Change Impacts in a Tropical River Basin: A Case Study of the Cauto River, Cuba journal August 2018
Forest Disturbance Feedbacks From Bedrock to Atmosphere Using Coupled Hydrometeorological Simulations Over the Rocky Mountain Headwaters journal September 2018
Evaluation of Coupled Model Intercomparison Project Phase 5 historical simulations in the Colorado River basin journal April 2018
Comparative analyses of hydrological responses of two adjacent watersheds to climate variability and change using the SWAT model journal January 2018
Hydrologic responses to projected climate change in ecologically diverse watersheds of the Gulf Coast, United States journal December 2018
Hydroclimatic Extremes and Climate Change book October 2019
Resistance and resilience of invertebrate communities to seasonal and supraseasonal drought in arid-land headwater streams journal December 2014