OTTER LAKE EARTHEN BERM REPAIR
Abstract
This project proposes to evaluate, design and repair a breach in the earthen berm at Otter Lake. A concrete weir installed in the berm in the 1960s or 1970s, was undercut and failed during the spring of 2018. Subsequent water flow eroded soil from the side of the weir and opened the old channel. See appendix A for photos of the damaged weir and area in need of repair. The sloped earthen berm is about 11 meters wide front to back and about 2 meters high above the bottom of the stream channel created by water flowing from the lake. Additional material will need to be excavated and removed to allow repair of the berm and to stop flow underneath the berm. A rough estimate is that about 80-100 cubic yards of compacted earthen material will be required to close off and repair the berm. Anticipate that a geotextile membrane would be installed on the lake-side of the berm and armored with riprap to prevent erosion and damage to the repaired area.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Oct 23, 2018
- Source ID
- W911KB142000221
Entities
People
- Jeff Smeenk
Organizations
- Palmer Soil and Water Conservation District
- United States Air Force
- United States Army Corps of Engineers