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NRCS PRACTICES TO REDUCE SOIL EROSION

Learn about field-scale management changes, water storage, and erosion control methods like cover crops, grassed waterways, stable waterways, and water detention basins. Understand erosion causes, design factors, and implementation processes for optimal results.

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NRCS PRACTICES TO REDUCE SOIL EROSION

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  1. NRCS PRACTICES TO REDUCE SOIL EROSION

  2. PATHWAYS TO REDUCE SOIL EROSION • Field scale management changes • Increase water storage in the soil • Examples • Cover crops • No-Till

  3. PATHWAYS TO REDUCE SOIL EROSION • Establish stable areas for water to move through • Construct stabilized waterways • Grassed waterway • Improve stream bank stability • Vegetated buffers • Riparian tree planting • Streambank stabilization projects- $$ Grassed Waterway Stabilized Stream Coridor

  4. PATHWAYS TO REDUCE SOIL EROSION • Create water holding structures • Short term structures hold water back and release it over a longer duration (24-48 hours) • Slowing water velocity reduces the sediment it can carry • Urban- • water detention basin • Agricultural • Water & Sediment control basin • Terraces Terrace Water Level during rainfall Terrace Trapped sediment Water Inlet

  5. PATHWAYS TO REDUCE SOIL EROSION • Construct Grade Stabilization Structures • Water impounding grade stabilization structures back water over the unstable grade • Farm Ponds • Structures can be built to armor the area of erosion • Rock Chutes • Fabric lined chutes Headcut formed from water moving over an unstable grade Rock Chute Farm Pond

  6. PROCESS FOR SELECTING EROSION CONTROL PRACTICES • Determine the underlying cause of the erosion • Why has the erosion taken place? • What type of erosion is occurring • Understand the Landowner’s goals and management system • Equipment sizes • Management preferences

  7. PROCESS FOR DESIGNING EROSION CONTROL PRACTICES • Landscape factors in structure design • Watershed length and slope • Soil type • Land use/ management • Sediment loss • Environmental factors in structure design • Rainfall amount • Rainfall duration • Most designs are based on a 4.5 inch rainfall event over 24 hours

  8. Questions

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