Delhi Dam

Delhi Dam
The dam after it failed in 2010
Location of Delhi Dam in the United States
Delhi Dam (Iowa)
LocationDelhi Township, Delaware County, near Delhi, Iowa
Coordinates42°24′28″N 91°20′43″W / 42.40778°N 91.34528°W / 42.40778; -91.34528
Construction began1922
Opening date1929
Owner(s)Lake Delhi Recreation Association
Dam and spillways
Type of damEmbankment, concrete outlet section
Height59 ft (18 m)
Length704 ft (215 m) (Concrete section)
Spillway typeService, gate-controlled ogee
Spillway capacity32,000 cu ft/s (910 m3/s)
Reservoir
CreatesLake Delhi
Total capacity3,790 acre⋅ft (4,670,000 m3)
Catchment area347 sq mi (900 km2)
Surface area218 ha (2.18 km2)
Normal elevation896 ft (273 m)
Power Station
Commission date1929
Decommission date1968
Turbines2
Installed capacity1.5 MW (Proposed)
Website
Lake Delhi Recreation Association

Delhi Dam, also known as Hartwick Dam, is an embankment dam on the Maquoketa River 2.5 kilometres (1.6 mi) southwest of Delhi, Iowa that created Lake Delhi. The dam was over-topped and subsequently failed on July 24, 2010 after a period of heavy rain. It was rebuilt in 2016.

The dam and lake are part of the Turtle Creek Recreation Area, and is owned by a local community group.