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Mississippi River Lock and Dam 3 Quick Facts

Location: Goodhue, Minnesota
Coordinates: 44.611044, -92.6099522
River: Mississippi River
Primary Purpose: Navigation
Type: Concrete Earth
Commissioned: 1938
Dam Height: 26 ft (8 m)
Dam Length: 4,500 ft (1,372 m)
Dam Capacity: 547,000 acre-ft (674,714 Ml)
Hazard Potential: Significant
Condition Assessment: Not Available
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Mississippi River Lock and Dam 3 Information

Mississippi River Lock and Dam 3 is a concrete earth dam located about 4 miles from Red Wing, Goodhue, Minnesota.

The dam, which is on the Mississippi River, was primarily built for Navigation purposes, but also serves for Recreation benefits.

The dam was designed by CEMVP and commissioned in 1938 and is currently owned by USACE – St. Paul District.

Mississippi River Lock and Dam 3 Structure

The Mississippi River Lock and Dam 3 is approximately 4,500 feet (1,372 m) long, 26 feet (8 m) high and has a structural volume of 134,000 cubic yards (102,450 cubic metres).

Mississippi River Lock and Dam 3 Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 290,000 acre-ft (357,709 Ml) and maximum capacity of 547,000 acre-ft (674,714 Ml).

The surface area of the reservoir is 17,950 acres (7,264 ha) and the total catchment area is 45,170 square miles (116,990 square kilometres).

Mississippi River Lock and Dam 3 Spillway

The dam has a 320 feet (98 m) wide controlled spillway with a maximum discharge capacity of 230000 cubic feet per second (6513 cubic metres per second).

Mississippi River Lock and Dam 3 Compared to Five Famous American Dams

Height (ft)
Length (Ft)
Storage Volume (acre-ft)
Drainage Area (sq miles)
 
Mississippi River Lock and Dam 3
Goodhue, Minnesota
Height (ft)
26
Length (Ft)
4,500
Storage Volume (acre-ft)
547,000
Drainage Area (sq miles)
45,170
Hoover Dam
Clark County, Nevada
Height (ft)
730
Length (Ft)
1,244
Storage Volume (acre-ft)
30,237,000
Drainage Area (sq miles)
167,800
Grand Coulee Dam
Okanogan County, Washington
Height (ft)
550
Length (Ft)
5,673
Storage Volume (acre-ft)
9,562,0000
Drainage Area (sq miles)
74,100
Theodore Roosevelt Dam
Maricopa County, Arizona
Height (ft)
357
Length (Ft)
1,208
Storage Volume (acre-ft)
3,411,500
Drainage Area (sq miles)
5,736
Oroville Dam
Butte County, California
Height (ft)
235
Length (Ft)
6,920
Storage Volume (acre-ft)
3,540,000
Drainage Area (sq miles)
3,611
Glen Canyon Dam
Coconino County, Arizona
Height (ft)
216
Length (Ft)
1,565
Storage Volume (acre-ft)
29,875,000
Drainage Area (sq miles)
108,355

Mississippi River Lock and Dam 3 Weather

Current Conditions at Mississippi River Lock and Dam 3

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7-Day Forecast for Mississippi River Lock and Dam 3

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Mississippi River Lock and Dam 3 Frequently Asked Questions

In which state is the Mississippi River Lock and Dam 3?

Mississippi River Lock and Dam 3 is in Minnesota.

In which county is the Mississippi River Lock and Dam 3?

Mississippi River Lock and Dam 3 is in Goodhue County.

How high is the Mississippi River Lock and Dam 3?

Mississippi River Lock and Dam 3 is 26 feet high.

How long is the Mississippi River Lock and Dam 3?

Mississippi River Lock and Dam 3 is 4,500 feet long.

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Mississippi River Lock and Dam 3

Condition Assessment Classification

Satisfactory

No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.

Fair

No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum

Poor

A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.

Unsatisfactory

A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.

Not Rated

The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.

Not Available

Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High

Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.

Significant

Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.

Low

Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner’s property.

Undetermined

Dams for which a downstream hazard potential has not been designated or is not provided.

Not Available

Dams for which the downstream hazard potential is restricted to approved government users.

Source: National Inventory of Dams

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