Catalog Record

Data and Report from S&T Project 8284: Cracked Embankment Erosion Research

Internal erosion events account for the majority of canal and dam embankment incidents. Index testing has been used to estimate the erodibility of different compacted embankment soils. Index tests include Hole Erosion Tests (HET) and Jet Erosion Tests (JET). These tests provide an indication of different circumstances (such as water content at placement, density, soil type) that impact a soil’s erodibility. The results of these tests are often used in risk analyses to help evaluate the likelihood of failure for Reclamation’s embankment dams. Recent large-scale erosion tests were completed and compared to HET and JET results. Results from the large-scale tests indicate water content, density, void ratio, and percent saturation have a significant impact on a soil’s erodibility. Testing on non-plastic silts and high-plasticity clays revealed surprising results. Under various conditions the erosion rate in the clay was found to be similar to the highly erodible non-plastic silts and under other variations the non-plastic silts eroded as slowly as high-plasticity clays. Results from these tests will be used in the evaluation of embankment erodibility.
Generation Effort S&T Project 8284: Cracked Embankment Erosion Research
Themes Infrastructure and Assets
Tags Internal Erosion, Erosion, Cracked Embankment, Concentrated Leak Erosion, Scour, Gradient, Hydraulic Shear Stress
Reclamation Project
Reclamation Program Science and Technology Program

Location Information

Location Description The Technical Service Center Hydraulics Lab is a 54,000 square foot indoor lab facility that is used to perform physical hydraulic model studies with flow capacities up to 60 cfs and 600 ft of pressure head, with fixed and variable-slope flumes and a low-ambient pressure chamber. The Hydraulic Investigations & Laboratory Services staff apply hydraulic modeling, analysis, and laboratory and field measurements expertise to the solution of water resources, hydraulics, and fluid mechanics problems. The TSC Hydraulics Lab is located at the Denver Federal Center, 6th and Kipling, Building 56, Denver, Colorado 80225-0007.
Location Tags Denver Federal Center
Location Parent
State(s) Colorado
Unified Region(s) Upper Colorado Basin
Timezone MT
Elevation 5,619 ft
Vertical Datum NAVD88
Coordinates (lat, long) See Location Details
Horizontal Datum WGS84