Mississippi River Lock and Dam 6

Mississippi River Lock and Dam 6 Quick Facts

Location: Winona, Wisconsin
Coordinates: 43.998687, -91.4384302
River: Mississippi River
Primary Purpose: Navigation
Type: Concrete Earth
Commissioned: 1936
Dam Height: 17 ft (5 m)
Dam Length: 4,865 ft (1,483 m)
Dam Capacity: 180,000 acre-ft (222,026 Ml)
Hazard Potential: Significant
Condition Assessment: Not Available
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Mississippi River Lock and Dam 6 Map

Mississippi River Lock and Dam 6 Information

Mississippi River Lock and Dam 6 is a concrete earth dam located about 2 miles from Trempealeau, Winona, Wisconsin.

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 1936 and is currently owned by USACE – St. Paul District.

Mississippi River Lock and Dam 6 Structure

The Mississippi River Lock and Dam 6 is approximately 4,865 feet (1,483 m) long, 17 feet (5 m) high and has a structural volume of 271,700 cubic yards (207,730 cubic metres).

Mississippi River Lock and Dam 6 Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 41,000 acre-ft (50,573 Ml) and maximum capacity of 180,000 acre-ft (222,026 Ml).

The surface area of the reservoir is 8,870 acres (3,590 ha) and the total catchment area is 60,030 square miles (155,477 square kilometres).

Mississippi River Lock and Dam 6 Spillway

The dam has a 1750 feet (533 m) wide controlled spillway with a maximum discharge capacity of 268000 cubic feet per second (7589 cubic metres per second).

Mississippi River Lock and Dam 6 Compared to Five Famous American Dams

Height (ft)
Length (Ft)
Storage Volume (acre-ft)
Drainage Area (sq miles)
 
Mississippi River Lock and Dam 6
Winona, Wisconsin
Height (ft)
17
Length (Ft)
4,865
Storage Volume (acre-ft)
180,000
Drainage Area (sq miles)
60,030
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 6 Weather

Current Conditions at Mississippi River Lock and Dam 6

Parameter Value
Current Time 20:00
Sunrise 07:33
Sunset 17:00
Temperature (°F) 4
Feels Like (°F) -9
Cloud Coverage (%) 100
Pressure (inHg) 1025
Humidity (%) 51
Wind Speed (mph) 15
Rain (mm) 0

7-Day Forecast for Mississippi River Lock and Dam 6

Day Min Temp (°F) Max Temp (°F) Feels Like (°F) Pressure (inHg) Humidity (%) Wind Speed (mph) Wind Gust (mph) Wind Dir Precip Prob (%) Precip Volume (mm) Weather
Today -13 6 -16 1034 35 17 36 S 0 - clear sky
Wed 7 25 10 1016 67 17 35 S 0 - overcast clouds
Thu 4 14 -2 1030 56 14 23 NNW 0 - broken clouds
Fri 5 20 5 1023 34 15 37 S 0 - broken clouds
Sat 16 28 16 1022 63 16 31 WNW 0 - broken clouds
Sun 10 25 11 1027 40 12 33 WSW 0 - overcast clouds
Mon 19 35 17 1013 55 16 36 W 0 - scattered clouds
Tue 20 31 20 1017 54 17 38 SSW 0 - clear sky

Mississippi River Lock and Dam 6 Frequently Asked Questions

In which state is the Mississippi River Lock and Dam 6?

Mississippi River Lock and Dam 6 is in Wisconsin.

In which county is the Mississippi River Lock and Dam 6?

Mississippi River Lock and Dam 6 is in Winona County.

How high is the Mississippi River Lock and Dam 6?

Mississippi River Lock and Dam 6 is 17 feet high.

How long is the Mississippi River Lock and Dam 6?

Mississippi River Lock and Dam 6 is 4,865 feet long.

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More Dams in Winona County:

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Mississippi River Lock and Dam 6

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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