Hoopes Reservoir

Hoopes Reservoir is a reservoir in New Castle County, Delaware.

Hoopes Reservoir
Hoopes Reservoir in spring
Hoopes Reservoir Show map of Delaware Hoopes Reservoir Show map of the United States
Location	New Castle County, Delaware, United States
Coordinates	39°46′27″N 75°38′03″W
Surface area	187 acres (76 ha)
Water volume	479,160,000 cubic feet (13,568,000 m3)

The reservoir first impounded the water of Old Mill Stream and Red Clay Creek in 1932, with a dam built by the city of Wilmington, Delaware, for municipal drinking water. It has a water surface of 187 acres (76 ha), a maximum capacity of 11,000 acre-feet (14,000,000 m³), and a normal capacity of 6,300 acre-feet (7,800,000 m³).[1] The reservoir and its surroundings have been open to the public since 1971.[2] It is the largest reservoir in Delaware.

The dam, Edgar M. Hoopes Dam (National ID # DE00015), is a concrete gravity dam originally built in 1932 and restructured several times since. It is 135 feet (41 m) high and 845 feet (258 m) in length at the crest.[1] Its namesake, Edgar M. Hoopes, was Chief Engineer of the Wilmington Water Department from 1913 through 1918, according to a plaque on site.[2]