Quick Facts About Three Mile Reservoir Dam
Three Mile Reservoir Dam Map
Three Mile Reservoir Dam Information
Three Mile Reservoir Dam is an earthen embankment dam located about 26 miles from Westerville, Union, Iowa.
The dam, which is on the Three Mile Creek River, was primarily built for Flood Risk Reduction purposes, but also serves for Recreation and Water Supply benefits.
The dam was designed by BURNS and MCDONNELL;Burns & McDonnell and commissioned in 1995 and is currently owned by Iowa Department of Natural Resources.
Three Mile Reservoir Dam Structure
The Three Mile Reservoir Dam is approximately 1,850 feet (564 m) long, 63 feet (19 m) high and has a structural volume of 591,100 cubic yards (451,928 cubic metres).
Three Mile Reservoir Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 14,091 acre-ft (17,381 Ml) and maximum capacity of 29,950 acre-ft (36,943 Ml).
The surface area of the reservoir is 880 acres (356 ha) and the total catchment area is 36 square miles (94 square kilometres).
Three Mile Reservoir Dam Spillway
The dam has a 6 feet (2 m) wide uncontrolled spillway with a maximum discharge capacity of 0 cubic feet per second (0 cubic metres per second).
Three Mile Reservoir Dam Compared to Four Famous American Dams
| Three Mile Reservoir Dam Union, Iowa |
Hoover Dam Clark County, Nevada |
Grand Coulee Dam Okanogan County, Washington |
Theodore Roosevelt Dam Maricopa County, Arizona |
Glen Canyon Dam Coconino County, Arizona |
|
|---|---|---|---|---|---|
| Height (ft) | 63 | 730 | 550 | 357 | 216 |
| Length (Ft) | 1,850 | 1,244 | 5,673 | 6,920 | 1,565 |
| Storage Volume (acre-ft) | 29,950 | 30,237,000 | 9,562,000 | 3,540,000 | 29,875,000 |
| Drainage Area (sq miles) | 36 | 167,800 | 74,100 | 3,611 | 108,355 |
Three Mile Reservoir Dam Weather
Current Conditions at Three Mile Reservoir Dam
Failed to fetch current weather data.7-Day Forecast for Three Mile Reservoir Dam
Failed to fetch weather forecast data.Three Mile Reservoir Dam Frequently Asked Questions
Three Mile Reservoir Dam is in Iowa.
Three Mile Reservoir Dam is in Union County.
Three Mile Reservoir Dam is 63 feet high.
Three Mile Reservoir Dam is 1,850 feet long.
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Lake Calion Dam
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Pilcher Creek Dam
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River View West Slurry Lake Dam
Slurry Lake Iv Dam
Thief Valley Dam
Three Mile Reservoir Dam
Tramperos Creek Site 1 Dam
Twelve Mile Creek Watershed Site M-1 Dam
Whitewater St. Park Lake Dam
Wolf Creek Dam
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Nashua Milldam
Pleasant Creek Lake Dam
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Three Mile Reservoir Dam
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West Lake 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