L.A. County Public Works has begun the mobilization period leading to the removal of sediment from the Devil’s Gate Reservoir.
Between Aug. 14 and Sept. 1, the County’s Public Works Department will stage equipment, erect a water tower and remove some weeds.
On Sept. 1, workers will begin removing the buildup of sediment in the reservoir.
The number of truck trips will be limited to 300 per day.
In total, 145,000 cubic yards need to be removed from the reservoir.
Last year, L.A .County Public Works removed approximately 25,000 cubic yards of sediment from Devil’s Gate Reservoir over the span of six weeks.
The maintenance period will last from Aug. 14 to Dec. 15.
Hauling operations being conducted September 1 to December 15.
The removal allows the Devil’s Gate Dam to regulate high runoff flows during the storm season to mitigate flood risk to downstream communities.
This work will include clearing vegetation within the reservoir basin and excavating excess sediment that has been deposited during the past storm season.
The Hahamongna Watershed Park perimeter trail will remain open to the public.
Sediment hauling will occur Monday through Friday, 7 a.m. to 3 p.m., and work within the reservoir may continue until 6 p.m.
No work will be conducted on weekends, holidays, or during major Rose Bowl events.
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