Mon-Maq Dam

River/Stream: Maquoketa River

Location: Monticello, Jones County
        Latitude: 42.244765
        Longitude: -91.172125
        Click here to view an aerial map of the dam.

View of dam from below on river left

Built: 1853, rebuilt 1913-1914

Owner: Jones County Conservation Board

Height: 9.5 ft.

Length: 441 ft.

Hazards: usage, visibility

Warning Signs: good

Portage: Portage on river-left (east bank.)

Comments: Over the past 10 years the Conservation Board, Mon/Maq Dam Advisory Committee, and interested citizens have been reviewing several options for the long term use and management of the Mon/Maq Dam Access near Monticello. The center of this review has involved options for the dam itself, including significant modifications to the structure. Please click here for more information.

Warning sign with portage marker