H. Neely Henry Dam Quick Facts
H. Neely Henry Dam Map
H. Neely Henry Dam Information
H. Neely Henry Dam is a gravity earth dam located about 3 miles from Ohatchee, St. Clair, Alabama.
The dam, which is on the Coosa River, was primarily built for Hydroelectric purposes, but also serves for Recreation benefits.
The dam was designed by and commissioned in 1966 and is currently owned by Alabama Power Company.
H. Neely Henry Dam Structure
The H. Neely Henry Dam is approximately 4,705 feet (1,434 m) long, 104 feet (32 m) high and has a structural volume of 1,500,000 cubic yards (1,146,833 cubic metres).
H. Neely Henry Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 121,860 acre-ft (150,312 Ml) and maximum capacity of 121,860 acre-ft (150,312 Ml).
The surface area of the reservoir is 11,235 acres (4,547 ha) and the total catchment area is 6,600 square miles (17,094 square kilometres).
H. Neely Henry Dam Spillway
The dam spillway has a maximum discharge capacity of 340000 cubic feet per second (9628 cubic metres per second).
H. Neely Henry Dam Compared to Five Famous American Dams
H. Neely Henry Dam Weather
Current Conditions at H. Neely Henry Dam
Failed to fetch current weather data.7-Day Forecast for H. Neely Henry Dam
Failed to fetch weather forecast data.H. Neely Henry Dam Frequently Asked Questions
H. Neely Henry Dam is in Alabama.
H. Neely Henry Dam is in St. Clair County.
H. Neely Henry Dam is 104 feet high.
H. Neely Henry Dam is 4,705 feet long.
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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