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Project ID: 03-2-3-11

Year: 2003

Date Started: 07/30/2003

Date Completed: 02/02/2007

Title: Quantification of Runoff and Erosion on Semi-Arid Grasslands Following Wildfire

Project Proposal Abstract: The Ryan Fire burned over 38,000 acres of southwestern semi-arid grassland and oak woodland areas in Southeastern Arizona in April and May 2002. The Audubon Appleton-Whittell Research Ranch, an 8,000 acre refuge, is located in the center of the burned area In 1997, the USDA-ARS, Southwest Watershed Research Center had established two hillslope runoff and erosion monitoring research areas on the Audubon Research Ranch. Originally, rainfall simulator experiments to measure runoff and erosion rates were to be conducted in late 2002 or early in 2003. However, with the advent of the Ryan Fire, we had the opportunity to directly measure runoff and erosion under controlled conditions on our erosion research areas immediately following the wildfire. Rainfall simulator experiments were conducted on both sites in early June 2002: infiltration, runoff and erosion rates were measured on five (2m by 6m) rainfall simulator plots. This study will address task RFP-2003-2-Task 3. The objectives are to: 1) quantify the changes in runoff and erosion responses immediately after and for a two year period following a wildfire in a semi-arid grassland, and 2) use the data from burned and unburned rainfall simulator piots to develop semi-arid grassland parameters for Disturbed WEPP. To accomplish these objectives, we plan to continue to use rainfall simulation techniques to monitor the post-wildfire runoff and erosion rates on the two research sites on the Audubon Research Ranch. The data gained from this project will be evaluated using Disturbed WEPP. This project is the first step in developing an input parameter dataset for semi-arid grassland ecosystems for the Disturbed WEPP post fire. erosion risk management tool.

Principal Investigator: Jeffry J. Stone

Agency/Organization: ARS-Agricultural Research Service

Branch or Dept: SWRC-Southwest Watershed Research Center

Other Project Collaborators




Branch or Dept

Co-Principal Investigator

D. Phillip Guertin

University of Arizona-Tucson

School of Natural Resources & the Environment

Co-Principal Investigator

Ginger B. Paige

ARS-Agricultural Research Service

SWRC-Southwest Watershed Research Center

Federal Cooperator

Gerald J. Gottfried

Forest Service

Tonto National Forest

Project Locations

Fire Science Exchange Network


There are no project locations identified for this project.

Project Deliverables

Final Report view or print

("Results presented in JFSP Final Reports may not have been peer-reviewed and should be interpreted as tentative until published in a peer-reviewed source.")

  ID Type Title
    1036 Government Publication Documentation of Increases in Runoff and Erosion from Burned Sites
    1037 Government Publication Documentation of Post Fire Recovery (Over Three Year Period) on Burn Sites
view or print   1446 Government Publication Post Wildfire Runoff and Erosion Response on Grassland and Oak Woodlands in Southeastern Arizona
view or print   1465 Government Publication Runoff and Erosion on a Semi-Arid Grassland After a Wildfire
view or print   2497 Journal Article Applied Engineering in Agriculture
view or print   271 MS Thesis Parameterizing the WEPP Model for Post-Fire Conditions in Semi-Arid Environments Using Rainfall Simulator (J.E. Wickre)
    956 Dataset (including spatial) Disturbed WEPP Input Parameters for Semi-Arid Grasslands
    1100 Conference/Symposia/Workshop Workshop for Landuse Managers

Supporting Documents

There are no supporting documents available for this project.

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