Dodson Diversion Dam

The Dodson Diversion Dam on Milk River 5 miles west of Dodson, Mont., is a timber crib, weir-type structure with movable crest gates. The structural height is 26 feet; the crest length is 8,154 feet. The Dodson North Canal, diverting on the north side of the river just above Dodson Dam, has an initial capacity of 500 cubic feet per second, conveys water for irrigation of Malta Division lands south of Milk River, and also conveys water for storage in Nelson Reservoir.

RegionFacilities in Great Plains | Great Plains Home Page
ProjectMilk River
Dam TypeConcrete capped timber-crib weir, movable crest, embankment wings
WatercourseMilk River
LocationOn the Milk River 5 miles west of Dodson, Montana.
Original Construction1910
Modified ConstructionConcrete slab placed over crest and ogee section 1952.
National ID NumberMT00583
Hydrologic Unit Code

Structural Height26.00 ft
Hydraulic Height (Normal Operating Depth at Dam)23.00 ft
Top Parapet (Elevation)
Spillway Crest Elevation
Crest Elevation2,280.00 ft
Crest Length8,154.00 ft
Crest Width
Base Width
Volume of Dam Construction Materials 87,400.00 cu yds
Streambed at Dam Axis
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)
Top of Inactive Conservation Pool (Elevation)
Top of Dead Storage Pool (Elevation)

Hydraulics & Hydrology
Total Water Storage at Elevation
Maximum Water Surface Elevation
Normal Water Surface Elevation
Spillway TypeMovable overflow crest
Auxiliary Spillway
Spillway Capacity at ElevationSouth Canal: 500 cfs; North Canal: 200 cfs at
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation
Diversion Capacity at Elevation
Drainage Area
Hydrometeorological Report (HMR)
Probable Maximum Flood (PMF) Report

Contact Information
TitleArea Manager
OrganizationMontana Area Office
AddressP.O. Box 30137
CityBillings, MT 59107-0137
Phone (Fax)406 247-7338
Phone (Office)406 247-7300
OrganizationMalta Irrigation District
AddressPO Box 1340
CityMalta, MT 59523
Phone (Office)406 654-1440

Last updated: Mar 29, 2013