Big Dalton Dam Rehabilitation

Materials Testing, QC/QA Inspection

The project will rehabilitate the sluiceway outlet on Big Dalton Dam to support flood control operations, promote stormwater capture and groundwater recharge, allow safe emergency dewatering releases, and maintain a structurally-sound facility. Specific project activities include the following. On the upstream side of the dam reservoir bottom access road and work pad, a bypass pipeline into a 0.55-acre desilting basin, the sluice gate will be replaced with a hydraulic gate, a new debris rack, and an existing corrugated metal pipe will be replaced with a concrete chute along the west rim of the reservoir. Downstream of the dam the repairs will occur at the following locations two existing dip crossings will be replaced with box culverts, a single-span bridge will replace the existing structure, dam apron, and sluiceway repairs, a regulating valve will be installed at the sluiceway outlet, the existing access road will be paved with Portland cement, and facility and miscellaneous repairs.