Prairie Du Sac Dam

Prairie Du Sac Dam Quick Facts

Location: Sauk, Wisconsin
Coordinates: 43.3101, -89.7253
River: Wisconsin River
Primary Purpose: Hydroelectric
Type: Gravity
Commissioned: 1914
Dam Height: 25 ft (8 m)
Dam Length: 3,247 ft (990 m)
Dam Capacity: 193,200 acre-ft (238,308 Ml)
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Prairie Du Sac Dam Map

Prairie Du Sac Dam Information

Prairie Du Sac Dam is a gravity dam located about 1 miles from Prairie Du Sac, Sauk, Wisconsin.

The dam, which is on the Wisconsin River, was primarily built for Hydroelectric purposes, but also serves for benefits.

The dam was designed by MEAD & SEASTONE and commissioned in 1914 and is currently owned by Wisconsin Power and Light Company.

Prairie Du Sac Dam Structure

The Prairie Du Sac Dam is approximately 3,247 feet (990 m) long, 25 feet (8 m) high and has a structural volume of cubic yards (0 cubic metres).

Prairie Du Sac Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 119,950 acre-ft (147,956 Ml) and maximum capacity of 193,200 acre-ft (238,308 Ml).

The surface area of the reservoir is 9,000 acres (3,642 ha) and the total catchment area is 9,180 square miles (23,776 square kilometres).

Prairie Du Sac Dam Spillway

The dam has a 820 feet (250 m) wide controlled spillway with a maximum discharge capacity of 251990 cubic feet per second (7136 cubic metres per second).

Prairie Du Sac Dam Compared to Five Famous American Dams

Height (ft)
Length (Ft)
Storage Volume (acre-ft)
Drainage Area (sq miles)
 
Prairie Du Sac Dam
Sauk, Wisconsin
Height (ft)
25
Length (Ft)
3,247
Storage Volume (acre-ft)
193,200
Drainage Area (sq miles)
9,180
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

Prairie Du Sac Dam Weather

Current Conditions at Prairie Du Sac Dam

Parameter Value
Current Time 21:56
Sunrise 06:41
Sunset 16:44
Temperature (°F) 45
Feels Like (°F) 44
Cloud Coverage (%) 37
Pressure (inHg) 1025
Humidity (%) 83
Wind Speed (mph) 3
Rain (mm) 0

7-Day Forecast for Prairie Du Sac Dam

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 44 50 42 1020 75 14 21 NW 0 - overcast clouds
Thu 37 55 48 1027 52 10 21 W 0 - few clouds
Fri 38 57 50 1025 57 9 24 WNW 0 - overcast clouds
Sat 42 52 48 1021 67 15 30 ESE 100 4 moderate rain
Sun 48 54 45 1006 91 10 21 W 100 1 light rain
Mon 45 57 52 1011 68 7 16 W 0 - overcast clouds
Tue 45 61 59 1013 67 12 33 SSE 0 - clear sky
Wed 39 62 61 1000 68 23 41 WSW 100 13 moderate rain

Prairie Du Sac Dam Frequently Asked Questions

In which state is the Prairie Du Sac Dam?

Prairie Du Sac Dam is in Wisconsin.

In which county is the Prairie Du Sac Dam?

Prairie Du Sac Dam is in Sauk County.

How high is the Prairie Du Sac Dam?

Prairie Du Sac Dam is 25 feet high.

How long is the Prairie Du Sac Dam?

Prairie Du Sac Dam is 3,247 feet long.

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More Dams in Sauk County:

Dutch Hollow Lake Dam
Lake Redstone Dam
Prairie Du Sac Dam

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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