100-Year Flood – It’s All About Chance

U.S. Geological Survey (USGS) | April 15th, 2010


2017 Flood System Status Report

California Department of Water Resources (DWR) | August 10th, 2017


This report is intended to assist flood management planners and engineers in characterizing facilities within the State Plan of Flood Control (SPFC) and to inform the 201

A Climatology of Narrow Cold-Frontal Rainbands in Southern California

American Geophysical Union (AGU) | January 27th, 2022


Narrow cold-frontal rainbands produce short-duration (<1-hr), high-intensity precipitation associated with flash floods and debris flows in Southern California, inclu

A Guide to Ordinary High Water Mark (OHWM) Delineation for Non-Perennial Streams in the Western Mountains, Valleys, and Coast Region of the United States

U.S. Army Corps of Engineers (USACE) | August 14th, 2014


Federal regulations define the ordinary high water mark (OHWM) as “that line on the shore established by the fluctuations of water and indicated by physical cha

A rationale for effective post-fire debris flow mitigation within forested terrain

Geoenvironmental Disasters, Springer | May 25th, 2018


Watersheds recently burned by wildfires are recognized as having an increased susceptibility to debris flow occurrence. The great majority occur within the first 2 years

A shift from drought to extreme rainfall drives a stable landslide to catastrophic failure

Nature | February 7th, 2019


The addition of water on or below the earth’s surface generates changes in stress that can trigger both stable and unstable sliding of landslides and faults.

A study of methods to estimate debris flow velocity

Landslides, Springer | September 16th, 2019


Debris flow velocities are commonly back-calculated from superelevation events which require subjective estimates of radii of curvature of bends in the debris flow channe

A tale of two California droughts: Lessons amidst record warmth and dryness in a region of complex physical and human geography

American Geophysical Union (AGU) | November 19th, 2015


The state of California has experienced the worst drought in its historical record during 2012–2015. Adverse effects of this multi year event have been far from unifor

A Twenty-First-Century California Observing Network for Monitoring Extreme Weather Events

Journal of Atmospheric and Oceanic Technology, American Meteorological Society | August 27th, 2013


During Northern Hemisphere winters, the West Coast of North America is battered by extratropical storms. The impact of these storms is of paramount concern to California,

Accounting for Water "Wasted to the Sea"

San Francisco Estuary & Watershed Science (UC Davis) | April 19th, 2018


Freshwater outflow from the Sacramento–San Joaquin Delta is a contentious management issue. Once mixed with salt water of San Francisco Bay, outflow is often characteri

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