Hamlin Lake Dam, Michigan, USA

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Quick Facts About Hamlin Lake Dam

Location: Mason, Michigan
Coordinates: 44.0325, -86.4922222
River: Big Sable River
Primary Purpose: Recreation
Type: Gravity Earth
Commissioned: 1913
Dam Height: 23 ft (7 m)
Dam Length: 206 ft (63 m)
Dam Capacity: 102,500 acre-ft (126,432 Ml)
Condition Assessment: Satisfactory

Hamlin Lake Dam Map

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Hamlin Lake Dam Information

Hamlin Lake Dam is a gravity earth dam located in Ludington State Park, Mason, Michigan.

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

The dam was designed by and commissioned in 1913 and is currently owned by MDNR Parks & Recreation.

Hamlin Lake Dam Structure

The Hamlin Lake Dam is approximately 206 feet (63 m) long, 23 feet (7 m) high and has a structural volume of 0 cubic yards (0 cubic metres).

Hamlin Lake Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 85,600 acre-ft (105,586 Ml) and maximum capacity of 102,500 acre-ft (126,432 Ml).

The surface area of the reservoir is 4,750 acres (1,922 ha) and the total catchment area is 206 square miles (534 square kilometres).

Hamlin Lake Dam Spillway

The dam has a 94 feet (29 m) wide uncontrolled spillway with a maximum discharge capacity of 1700 cubic feet per second (48 cubic metres per second).

Hamlin Lake Dam Compared to Four Famous American Dams

Hamlin Lake Dam
Mason, Michigan
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) 23 730 550 357 216
Length (Ft) 206 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 102,500 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 206 167,800 74,100 3,611 108,355

Hamlin Lake Dam Weather

Current Conditions at Hamlin Lake Dam

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7-Day Forecast for Hamlin Lake Dam

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Hamlin Lake Dam Frequently Asked Questions

In which state is the Hamlin Lake Dam?

Hamlin Lake Dam is in Michigan.

In which county is the Hamlin Lake Dam?

Hamlin Lake Dam is in Mason County.

How high is the Hamlin Lake Dam?

Hamlin Lake Dam is 23 feet high.

How long is the Hamlin Lake Dam?

Hamlin Lake Dam is 206 feet long.

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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