Author

Jeff Baldock et al.

Published

September 17, 2025

1 Introduction

This book provides a visual story of the USGS Eco-Drought Capstone Project. Our goals are to (1) quantify fine-scale spatial heterogeneity in flow regimes in headwater stream networks, (2) demonstrate the limitations of existing tools that model flow in headwater streams, and (3) assess the subsequent effects of streamflow heterogeneity on fish population dynamics and vulnerability to climatic variation, particularly drought.

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.

Project team: Jeff Baldock, Jenn Fair, Ben Letcher, Robert Al-Chokhachy, Clint Muhlfeld, and Jason Dunham


Code
sessionInfo()
R version 4.4.1 (2024-06-14 ucrt)
Platform: x86_64-w64-mingw32/x64
Running under: Windows 11 x64 (build 22631)

Matrix products: default


locale:
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[2] LC_CTYPE=English_United States.utf8   
[3] LC_MONETARY=English_United States.utf8
[4] LC_NUMERIC=C                          
[5] LC_TIME=English_United States.utf8    

time zone: America/Denver
tzcode source: internal

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
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[13] rlang_1.1.4       evaluate_1.0.1