Jerry F. Costello Lock and Dam, Illinois, USA

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Quick Facts About Jerry F. Costello Lock and Dam

Location: Randolph, Illinois
Coordinates: 37.984187, -89.9459654
River: Kaskaskia River
Primary Purpose: Navigation
Type: Concrete Gravity
Commissioned: 1974
Dam Height: 66 ft (20 m)
Dam Length: 603 ft (184 m)
Dam Capacity: 25,246 acre-ft (31,140 Ml)
Hazard Potential: Significant
Condition Assessment: Not Available

Jerry F. Costello Lock and Dam Map

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Jerry F. Costello Lock and Dam Information

Jerry F. Costello Lock and Dam is a concrete gravity dam located about 20 miles from Modoc, Randolph, Illinois.

The dam, which is on the Kaskaskia River, was primarily built for Navigation purposes, but also serves for Fish and Wildlife Pond and Recreation benefits.

The dam was designed by CEMVS and commissioned in 1974 and is currently owned by USACE – St. Louis District.

Jerry F. Costello Lock and Dam Structure

The Jerry F. Costello Lock and Dam is approximately 603 feet (184 m) long, 66 feet (20 m) high and has a structural volume of 194,000 cubic yards (148,324 cubic metres).

Jerry F. Costello Lock and Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 22,183 acre-ft (27,362 Ml) and maximum capacity of 25,246 acre-ft (31,140 Ml).

The surface area of the reservoir is 2,618 acres (1,059 ha) and the total catchment area is 5,790 square miles (14,996 square kilometres).

Jerry F. Costello Lock and Dam Spillway

The dam has a 120 feet (37 m) wide controlled spillway with a maximum discharge capacity of 62000 cubic feet per second (1756 cubic metres per second).

Jerry F. Costello Lock and Dam Compared to Four Famous American Dams

Jerry F. Costello Lock and Dam
Randolph, Illinois
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) 66 730 550 357 216
Length (Ft) 603 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 25,246 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 5,790 167,800 74,100 3,611 108,355

Jerry F. Costello Lock and Dam Weather

Current Conditions at Jerry F. Costello Lock and Dam

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7-Day Forecast for Jerry F. Costello Lock and Dam

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Jerry F. Costello Lock and Dam Frequently Asked Questions

In which state is the Jerry F. Costello Lock and Dam?

Jerry F. Costello Lock and Dam is in Illinois.

In which county is the Jerry F. Costello Lock and Dam?

Jerry F. Costello Lock and Dam is in Randolph County.

How high is the Jerry F. Costello Lock and Dam?

Jerry F. Costello Lock and Dam is 66 feet high.

How long is the Jerry F. Costello Lock and Dam?

Jerry F. Costello Lock and Dam is 603 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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