DWR starting maintenance work on Oroville Dam spillway
Officials with the Department of Water Resources (DWR) said maintenance work on Oroville Dam’s main spillway was expected to start this week as construction staging equipment and materials make their way to the worksite. Maintenance work is expected to be performed on localized sections of the spillway to address areas of deteriorated concrete and sealant identified during annual inspections, DWR officials said. … Other planned work includes the replacement of a “joint sealant at select chute slab and wall joints that degrade over time due to the spillway’s environment.” Officials also will inspect 51,000 feet of piping that supports the spillway’s drainage system.