Woodhouse et al. (2026) Upper Rio Grande Streamflow, Climate, and Recent Increases in Runoff Efficiency

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Water Resources Research
• Year: 2026
• Date: 2026-09-01
• Authors: Connie A. Woodhouse, Cody Routson, M. D. Meko, Alexandre Florent Nolin
• DOI: 10.1029/2025wr042779

Research Groups

• University of Colorado Boulder Department of Civil, Environmental, and Architectural Engineering
• New Mexico State University Department of Plant and Environmental Sciences

Short Summary

This study investigates the hydroclimatic trends in the Rio Grande headwaters, finding no significant trend in annual flow despite declining snowpack and earlier melt-off. The increase in runoff efficiency is attributed to a shift in timing of runoff and high-elevation tree mortality due to a spruce beetle epidemic.

Objective

• Investigate the impact of climate change on hydroclimatic trends in the Rio Grande headwaters, specifically examining the relationship between snowpack, runoff, and forest disturbance.

Study Configuration

• Spatial Scale: The study focuses on the Rio Grande headwaters in south-central Colorado and New Mexico.
• Temporal Scale: The analysis spans two decades (approximately 2000-2020) with a focus on recent trends.

Methodology and Data

• Models used: Not specified; likely relies on observational data and statistical analysis.
• Data sources: Satellite imagery, observation networks, and reanalysis datasets are likely used to support the study's findings.

Main Results

• No significant trend in annual flow despite declining snowpack and earlier melt-off.
• Increase in runoff efficiency attributed to a shift in timing of runoff and high-elevation tree mortality due to a spruce beetle epidemic.
• The increase in runoff efficiency may be short-lived and already declining.

Contributions

• Provides new insights into the complex relationships between climate change, forest disturbance, and hydroclimatic trends in critical headwaters.
• Highlights the importance of considering multiple factors (natural climate variability, forest disturbance, and anthropogenic climate change) when anticipating changes in water supply.

Funding

• Not specified; likely supported by grants from government agencies or private organizations focused on environmental research.

Citation

@article{Woodhouse2026Upper,
  author = {Woodhouse, Connie A. and Routson, Cody and Meko, M. D. and Nolin, Alexandre Florent},
  title = {Upper Rio Grande Streamflow, Climate, and Recent Increases in Runoff Efficiency},
  journal = {Water Resources Research},
  year = {2026},
  doi = {10.1029/2025wr042779},
  url = {https://doi.org/10.1029/2025wr042779}
}