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IntroductionIt should come as no surprise to those working in the erosion control field that a roughened soil surface is much less erodible than a smooth, rolled or compacted surface. This is because a roughened surface slows down the velocity of runoff water and increases infiltration, reducing the volume of sediment-laden runoff as well. ...

Myth: Hydraulic mulching application rates change as slope gradient increases. Point of View: In recent months there has appeared on some product packaging recommendations for hydraulic mulch application rates based on gradient of slope. For example, one manufacturer provides the following departures from a standard 3,000 lbs per acre application ...

Myth: Rolled Erosion Control Products (RECPs) specification based on slope gradient. Point of View: Diagrams have been drawn and specifications written that recommend the use of various rolled erosion control products based solely on slope gradient. These unsupported recommendations were made by blanket manufacturers nearly two decades ago. This ...

Myth:Post-fire remediation actions, specifically hydraulic mulching and seeding, have a detrimental impact on the re-establishment of natural plant communities in California. Point of View: One of the first questions asked following an urban wildfire is whether or not to seed hillsides left barren by the fire and subject to erosion. Prior to 1993, ...

THE SLOPE GRADIENT FACTORFig. 1. Burned slopes above Pala Mesa Resort in Fallbrook, CA in 2007. The area to be treated was estimated using a combination of aerial photographs and topographic maps.For determining square footage of an area to be treated with hydraulic mulch, slope length and width can be determined using a measuring tape or wheel… ...

IntroductionIt should come as no surprise to those working in the erosion control field that a roughened soil surface is much less erodible than a smooth, rolled or compacted surface. This is because a roughened surface slows down the velocity of runoff water and increases infiltration, reducing the volume of sediment-laden runoff as well. ...

Myth: Hydraulic mulching application rates change as slope gradient increases. Point of View: In recent months there has appeared on some product packaging recommendations for hydraulic mulch application rates based on gradient of slope. For example, one manufacturer provides the following departures from a standard 3,000 lbs per acre application ...

Myth: Rolled Erosion Control Products (RECPs) specification based on slope gradient. Point of View: Diagrams have been drawn and specifications written that recommend the use of various rolled erosion control products based solely on slope gradient. These unsupported recommendations were made by blanket manufacturers nearly two decades ago. This ...