What is RUSLE2 ?
Revised Universal Soil Loss Equation, Version 2
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Estimates soil loss from rill and
interrill erosion caused by rainfall and overland flow |
RUSLE2
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Major revision of RUSLE1 |
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New graphical interface |
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Most RUSLE1 relationships revised |
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RUSLE2 Features
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Daily calculation of time-varying
factors |
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(r, k, ls, c, p) |
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Developed & tested by experienced
and nationally recognized erosion scientists and conservationists. |
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RUSLE2 Features
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Intended to describe main effects |
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Intended to be used as a guide for
conservation planning |
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Intended to represent trends
demonstrated in field data |
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Not intended to be a precise estimator |
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of soil loss or residue cover |
Validation of RUSLE2
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10,000 plot-years of data from natural
runoff plots |
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2000 plot-years of rainfall simulator
data |
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Proven by more than 4 decades of
worldwide use by its predecessors, USLE and RUSLE1 |
RUSLE2 Uses
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Conservation Planning |
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Inventories |
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Estimating Sediment Production |
Applicable Land Uses
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Cropland Grazing Land |
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Disturbed forestland Construction |
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Mined land Reclaimed land |
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Landfills Military land |
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Other areas where surface overland flow
occurs because rainfall exceeds infiltration |
RUSLE2
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Most powerful and easy-to-use |
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erosion prediction tool available |
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for use in conservation planning |
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at the field office level |
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Why implement RUSLE2?
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In 1998, NRCS made decision to have new
erosion prediction technology in place in time for 2002 Farm Bill |
RUSLE2 Implementation
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National Instruction for implementation
released in OCT 2002 |
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Application of RUSLE2 for USDA Farm
Programs similar to RUSLE1 |
RUSLE2 Implementation
Defined
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Full implementation means – |
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Program loaded on field office
computers |
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Databases loaded |
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Trained field office staff |
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Using for conservation planning |
Implementation Timeline
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1998-1999: Develop Technology for testing |
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2000:
Testing by NRCS |
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2001:
Develop supporting Databases |
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Train State erosion specialists |
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2002-2003: Implementation in all field offices where erosion is concern |
Supporting Databases
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Developed at National Level – |
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Crops Residues, |
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Field Operations, Climate |
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Soils Support Practices |
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Developed at State Office Level – |
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Crop Management Scenarios |
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Developed at Field Office Level - |
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(None) |
Field Office User
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Selects – |
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Location (climate) |
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Soil map unit component |
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Slope length and steepness |
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Crop Management (Use Rotation Builder
to develop rotation) |
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Supporting Practices |
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Training Field Office
Staff
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Tools Available - |
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Tutorial |
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PowerPoint Presentations |
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User’s Guides |
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Hands-On Training Time |
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One (1) day |
The end - implementation
overview