Wheaton Ecogeomorphology & Topographic Analysis Lab @ Fluvial Habitats Center
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      • Idaho Power Company >
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        • ELR/BPA: ISEMP Bridge Creek Restoration & IMW
        • ELR/FHC/CTWS: Pine Creek Beaver Assisted Restoration Pilot Project
      • NSF >
        • NSF: zCloudTools: Making Point Clouds Useful for Earth Science
        • NSF: Sensitivity of Braided River Morphodynamics to Sediment Supply
      • UDWR >
        • UDWR: Beaver Restoration Assessment Tool (BRAT)
      • USFS >
        • USFS Classification of Columbia River Basin Riparian Vegetation
        • USFS: Comparison of Traditional Versus Ground-Based LiDaR Instream Haibtat Assessments
        • USFS: Temple Fork Watershed Fish & Beaver Ecology
      • USGS >
        • USGS: Big Rivers Monitoring Protocol Development
        • USGS: Dynamism and Persistence of Eddy Sand Bars in Grand Canyon
        • USGS: Riparian Vegetation Analysis
        • USGS: Support in Geographic and Geomorphic Information Analysis for the Colorado River in Grand Canyon
      • Other Sponsors (one off) >
        • BPA/SFR: Development of CHaMP Transformation Tool
        • GCT: Pilot Study: Testing the Beaver Restoration Assessment Tool (BRAT)
        • NOAA: Linking Fisheries,
        • NPS: Assessment of Indicator Sites
        • USU: Tracking Ecogeomorphic Dynamics in Beaver Dam Complexes
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BRAT 2018-2019

What is BRAT?

Dam Building Capacity Model
The Beaver Restoration Assessment Tool (BRAT) is a
tool for imaging what is possible with dam-building beaver. As (Goldfarb, 2018; page 237) elegantly states, “Although BRAT’s primary value is technical, it is, too, an achievement of the imagination, a method for visualizing the magnificently ponded world that predated European trapping — a time machine to the Castorocene”. The BRAT capacity model outputs ‘paint’ a vision of what watersheds once were, and what they could be if beaver were allowed to return. BRAT provides a vision
for what’s possible and how partnering with beaver can help increase the resilience of watersheds to drought, fire, and climate change. BRAT can be used for planning and outreach, expectation management, and conservation and restoration prioritization.

The four primary questions that the BRAT capacity model asks:
  1. Is there enough water present to maintain a pond?
  2. Are enough of the right types of woody resources present to support dam building?
  3. Can beaver build  a dam at base flows?
  4. Can dams withstand typical floods?

BRAT’s backbone is a capacity model developed to assess the upper limits of riverscapes to support beaver dam-building. Our estimates of beaver dam capacity come from seven lines of evidence: (1) a reliable water source; (2) stream bank vegetation conducive to foraging and dam building; (3) vegetation within 100 m of edge of stream to support expansion of dam complexes and maintain large beaver colonies; (4) likelihood that dams could be built across the channel during low flows; (5) the likelihood that a beaver dam on a river or stream is capable of withstanding typical floods; (6) evidence of suitable stream gradient; and (7) evidence that river is too large to allow dams to be built and to persist. This is estimated using the following five inputs:
  1. a perennial water source
  2. availability of dam building materials
  3. ability to build a dam at baseflow
  4. likelihood of dams to withstand a typical flood
  5. likelihood that stream gradient would limit or completely eliminate dam building by beaver
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Dam-building beaver management model

​A beaver dam capacity model alone is not enough to effectively plan for large scale management and restoration of dam-building beaver. As such, the BRAT model assesses risk and opportunity for using beaver in conservation and restoration based on where streams with beaver dam capacity are relative to human infrastructure and high intensity land use. 

Where have we used BRAT?

BRAT has been applied in the following areas:
  • Yakama
  • ​North Fork Burnt River (Powder Basin Water Conservancy)
  • John Day
  • State of Idaho
  • Greater Yellowstone Area
  • State of Utah
  • TNC - Northern California
​

significance of project

We believe the BRAT model helps build realistic expectations about what beaver dam-building may achieve locally on a given stream, and also helps scale-up those expectations at the watershed level, state level, regional level and US wide level. These applications of BRAT provide the information needed to understand actual and potential beaver dam capacities, where human infrastructure is present, where nuisance beaver can be relocated, where ‘living with beaver’ strategies may be needed and where beaver can be employed in watershed conservation and restoration efforts to recover degraded streams, meadows and wetlands.
​

How the data can be used

BRAT model outputs can be used to initialize restoration and conservation planning and can also support initial conceptual design and siting of specific restoration actions. BRAT model outputs can also aid with expectation management, and conservation and restoration prioritization.
​
Beaver dam building activities can cause conflict where valuable infrastructure and/or land is impacted. Many conflicts can be managed to minimize damage while ensuring animal welfare and delivering ecosystem benefits. Understanding the capacity of streams to support dam building and identifying areas of risk and opportunity is therefore critically important for the effective beaver management. 
More detailed information here
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Picture
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This work is licensed under a
​ 
Creative Commons Attribution 4.0 International License.
  • Home
    • Fluvial Habitats Center
    • Wheaton et al (Lab)
    • Bouwes ELR Lab
    • News & Annoucements
    • New FHC Publications
    • FHC Location
    • FHC Factsheets & Posters
    • Contact
  • People
    • People in the Lab... Coming & Going
    • Graduate Students >
      • Lauren Herbine
      • Karen Bartelt
    • Research Staff >
      • Research Scientists >
        • Joe Wheaton
        • Nicolaas Bouwes
        • Wally Macfarlane
        • Stephen Bennett
      • Technicians >
        • Cashe Rasmussen
        • Chalese Hafen
        • Dylan Baum >
          • Brian Ferrara
    • Where are they now? >
      • Former Graduate Students >
        • Sara Bangen
        • Reid Camp
        • Florence Consolati
        • Daniel Hamill
        • Konrad Hafen
        • James Hensleigh
        • Nate Hough-Snee
        • Alan Kasprak
        • Martha Jensen
        • Ryan Lokteff
        • Connor Penrod
        • Rebecca Rossi
        • Sonya Welsh
      • Research Scientists >
        • Sara Bangen
        • James Hensleigh
        • Natalie Kramer
        • Pete McHugh
        • Elijah Portugal
        • Carl Saunders
        • Eric Wall
        • Gary O'Brien
      • Post-Docs >
        • Nicole Czarnomski
      • Technicians >
        • Micael Albonico
        • Braden Anderson
        • Adan Banda
        • Jordan Burningham
        • Kenny Demeurichy
        • Taylor Dudunake
        • Martha Jensen
        • Joshua Gilbert
        • Jordan Gilbert
        • Thomas Hafen
        • Landon Haycock
        • Matt Meier
        • Chris Smith
        • Geoff Stevens
      • Visiting Scholars >
        • Ester Ramos
  • FHC Projects
    • Current Projects >
      • Beaver Dam Censusing
      • Birch Creek Restoration
      • Escalante Watershed
      • BRAT 2018-2019 >
        • BRAT-Yakama
        • BRAT-John Day
        • BRAT-NF Burnt River
        • BRAT-Idaho
        • BRAT-Utah
        • BRAT-TNC
        • BRAT-GYA
        • Survey123
      • ELR: Asotin LWD Restoration and IMW
      • Price River Channel Analysis
    • Past Projects >
      • BLM >
        • BLM: Historic Sand Cliff Signatures Public Archeology Program
      • DOE: ICRRR >
        • DOE/ICRRR: Geomorphic Change Detection 4.0 Software Development
        • DOE/ICRRR: Geomorphic Change Detection in the Grand Canyon
        • DOE/ICRRR: MoRPHED PhD Studentship
      • Idaho Power Company >
        • Idaho Power: TLS Data Analysis
      • ELR >
        • ELR/BPA: CHaMP Grand Ronde Crew Variability Study
        • ELR/BPA: ISEMP Lemhi Topographic Survey Technique Intercomparison
        • ELR/BPA: ISEMP Bridge Creek Restoration & IMW
        • ELR/FHC/CTWS: Pine Creek Beaver Assisted Restoration Pilot Project
      • NSF >
        • NSF: zCloudTools: Making Point Clouds Useful for Earth Science
        • NSF: Sensitivity of Braided River Morphodynamics to Sediment Supply
      • UDWR >
        • UDWR: Beaver Restoration Assessment Tool (BRAT)
      • USFS >
        • USFS Classification of Columbia River Basin Riparian Vegetation
        • USFS: Comparison of Traditional Versus Ground-Based LiDaR Instream Haibtat Assessments
        • USFS: Temple Fork Watershed Fish & Beaver Ecology
      • USGS >
        • USGS: Big Rivers Monitoring Protocol Development
        • USGS: Dynamism and Persistence of Eddy Sand Bars in Grand Canyon
        • USGS: Riparian Vegetation Analysis
        • USGS: Support in Geographic and Geomorphic Information Analysis for the Colorado River in Grand Canyon
      • Other Sponsors (one off) >
        • BPA/SFR: Development of CHaMP Transformation Tool
        • GCT: Pilot Study: Testing the Beaver Restoration Assessment Tool (BRAT)
        • NOAA: Linking Fisheries,
        • NPS: Assessment of Indicator Sites
        • USU: Tracking Ecogeomorphic Dynamics in Beaver Dam Complexes
    • Study Site Pages >
      • Bridge Creek >
        • 2009 BDSS Structures
        • Bridge Creek April 2010 Drone Survey
      • River Feshie >
        • The River Feshie Catchment
        • Our Research
        • The Team
        • Posters, Papers, & More
        • Photo Gallery
  • Resources
    • ETAL Reading Group >
      • ETAL Reading Group Zotero Library
    • Courses & Workshops >
      • Courses & Workshops by Joe
    • Guides & Tips >
      • Figure Preparation Tutorials
      • Basic Computing Tips & Tricks >
        • Database & SQL Intro
        • Batch Unzip Script
        • Get a QR Code
        • GeoJSON
        • Markdown
        • Special Characters
        • USU VPN
      • GIS Help >
        • ArcGIS Education Edition
        • GIS Data Sources >
          • Connecting To The APFO Services
          • Connecting to the Utah AGRC Discover Imagery and Base Map Server
          • High Resolution Imagery for Utah State
      • How to Use Specific Software >
        • Adobe Illustrator >
          • Making GCD Figures for ET-AL Lab Using ArcGIS & Adobe Illustrator
        • ArcGIS Desktop - ArcMap >
          • GIS Tutorials
          • Creating DEMs, TINs and Terrains
          • How to divide polylines into a specified segment length
          • Simple Change Detection in ArcGIS
          • Working with Styles in ArcGIS
          • Fixing ActiveX Warning in ArcGIS 10.5
        • Box >
          • Migrating to Box Drive from Box Sync
        • EndNote >
          • EndNote X4 Basics
        • FastStone Capture
        • GitHub >
          • Make a GitHub Account
        • Picasa >
          • Geotagging images & making albums
        • Word >
          • Saving Word Documents as PDFs
          • Using Styles Effectively in Manuscripts & Reports
        • Zotero >
          • Adding from Browser
          • Cite-While-you-Write >
            • Citing in Google Docs
            • Cite in Word
      • Reccomended Software & Utilities
      • Surveying & Geomatics >
        • rtkGPS
      • Writing Resources >
        • Writing Literature Reviews (for Grads)
        • Writing Scientific Papers
        • Uploading Content to Research Gate
    • Lab Members Only >
      • Internal Resources >
        • When you First Start
        • Standard Software Suite
        • Lab Software License
        • Virtual Computing
        • Editing Workshop Flyers & Webpages
        • Travel
        • Vignettes
      • Internal FHC Announcements
      • FHC Workshops
      • ETAL Projects on Box
      • ETAL Non Project on Box
    • River Links >
      • Classification Schemes >
        • Eco-Geo-Hydro Mess
      • Free Literature
      • Rivers in the News
      • Videos & Galleries
  • Joe Wheaton