Erosion Control Pilot Study
(District 7): Laboratory evaluation of five soil roughness
techniques on erosion rates and runoff using simulated rainfall.
Laboratory and concurrent field evaluation of erosion rate and
plant establishment for 15 soil stabilization techniques using
simulated rainfall. Outdoor laboratory evaluation of the effect
of increasing plant cover on erosion rate for one vegetation type
using simulated rainfall. Field evaluation of erosion rate and
runoff for four vegetation types on cut and fill highway slopes
plus one vegetation type on an undisturbed highway site.
District 7 Erosion Control Pilot Study, Final Report, June 2000.
CTSW-RT-00-012
Vegetation Establishment and Maintenance Study:
Determined effectiveness of various planting techniques that
provide immediate soil surface stability and long-term erosion
control utilizing native vegetation. Produced a state-of-the-art
prototype GIS-based program for erosion control vegetation
selection. Multiple vegetation establishment tests were performed
at the Cal Poly Erosion Research Facility.
Rainfall Simulation: Evaluation Hydroseeding and Plug Planting
Technologies for Erosion Control and Improved Water Quality,
September 2002. CTSW-RT-02-052
Results from this study presented at the International Erosion
Association (IECA) 2004 Conference in Philadelphia, Pennsylvania.
IECA honored this paper with the “2004 Most Distinguished
Technical Paper Award.”
Effectiveness of Native Vegetation Planting Techniques to
Minimize Erosion 
Soil Stabilization for Temporary Slopes Field Guide:
Provided information to construction staff on the selection of
appropriate erosion products and techniques for soil
stabilization for temporary slopes at construction sites.
Field Guide: Soil Stabilization for Temporary Slopes, Final
Report, November 1999. CTSW-OT-99-001
Historical Vegetation Review and Analysis of Hydroseeding
Limitations: Analyzed over 55 sites in California for erosion
control product effectiveness and trends of failures to reduce
sediment in stormwater.
Caltrans Statewide Erosion Control Review, Final Report, October
2001. CTSW-RT-01-067
Permanent Soil Stabilization Pilot Studies: Identified
permanent erosion products, selected sites, and developed a
sampling and analysis plan for field testing non-vegetative
erosion control technologies in arid regions of California.
Caltrans Arid Region Non-Vegetated Erosion Control Study Plan and
Experimental Design, Final Report, July 2002.
CSTW-RT-02-038
Temporary Soil Non-Vegetative Stabilization Study:
Assessed the water quality impacts of seven temporary
non-vegetative erosion control materials at two locations in
Orange County, California.
Temporary Non-Vegetative Soil Stabilization Evaluation Study for
2000-01 Season, October 2001. CTSW-RT-01-066
Caltrans Hydraulic Application Study: Performed
laboratory testing to assess the performance of seven
hydraulically-applied erosion control products applied to a soil
test bed at the San Diego State University Soil Erosion Research
Laboratory (SDSU/SERL).
Caltrans Hydraulic Application Study, June 2002.
CTSW-RT-02-035
Erosion New Technology Review Project: Identified 40
practices and approximately 200 products for potential use and
possible field and/or laboratory pilots.
Erosion Control New Technology Report, June 2003.
CTSW-RT-03-049
