Cited by 95Hydrology and Watershed Management StudiesHydrology and Drought AnalysisClimate variability and models

Continental U.S. streamflow trends from 1940 to 2009 and their relationships with watershed spatial characteristics

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Rice, Joshua S., Emanuel, Ryan E., Vose, James M., Nelson, Stacy A. C.·2015·Water Resources Research

Abstract

Changes in streamflow are an important area of ongoing research in the hydrologic sciences. To better understand spatial patterns in past changes in streamflow, we examined relationships between watershed‐scale spatial characteristics and trends in streamflow. Trends in streamflow were identified by analyzing mean daily flow observations between 1940 and 2009 from 967 U.S. Geological Survey stream gages. Results indicated that streamflow across the continental U.S., as a whole, increased while becoming less extreme between 1940 and 2009. However, substantial departures from the continental U.S. (CONUS) scale pattern occurred at the regional scale, including increased annual maxima, decreased annual minima, overall drying trends, and changes in streamflow variability. A subset of watersheds belonging to a reference data set exhibited significantly smaller trend magnitudes than those observed in nonreference watersheds. Boosted regression tree models were applied to examine the influence of watershed characteristics on streamflow trend magnitudes at both the CONUS and regional scale. Geographic location was found to be of particular importance at the CONUS scale while local variability in hydroclimate and topography tended to have a strong influence on regional‐scale patterns in streamflow trends. This methodology facilitates detailed, data‐driven analyses of how the characteristics of individual watersheds interact with large‐scale hydroclimate forces to influence how changes in streamflow manifest.

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  • The stochastic gradient boosting machine increases robustness by selecting samples randomly and has previously been employed in studies on river flow trend analysis and prediction.

    “This GBM increases robustness by selecting samples randomly, and has previously been employed in studies on Q trend analysis and prediction53,54.”

    From Burned forests impact water supplies (2018) · cites this paper as [53]

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  1. Ridgeway, G. (2013), Gbm: Generalized Boosted Regression Models, R Package Version 2.1. [Available at cran.r-project.org/web/packages/ gbm/gbm.pdf. · DOI

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Authors
Rice, J. S., Emanuel, R. E., Vose, J. M., & Nelson, S. A. C.
Affiliations
  • North Carolina State University (US)
  • US Forest Service (US)
Corresponding author
Rice, Joshua S.
Venue
Water Resources Research
Published
2015-08
Volume
51
Issue
8
Pages
6262-6275
ISSN
  • 0043-1397 (ISSN-L)
  • 1944-7973
OpenAlex
W1955666802
Cited by
95
References
86
Citations by year
2026: 5 · 2025: 10 · 2024: 7 · 2023: 8 · 2022: 17 · 2021: 6 · 2020: 10 · 2019: 8 · 2018: 13 · 2017: 5 · 2016: 6
FWCI
5.30
Type
journal article
Language
en
Open access
Locations
Water Resources Research (publishedVersion)
Funders
  • National Science Foundation (DGE-1252376)
  • Department of Forestry and Environmental Resources at North Carolina State University
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Hydrology and Watershed Management Studies
  • Physical Sciences › Environmental Science › Global and Planetary Change › Hydrology and Drought Analysis
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
Keywords
streamflow trends, continental United States, streamflow variability, streamflow extremes, hydroclimate, topography, boosted regression trees

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