Copan Dam Quick Facts
Copan Dam Map
Copan Dam Information
Copan Dam is a gravity earth dam located in Dewey, Washington, Oklahoma.
The dam, which is on the Little Caney River, was primarily built for Flood Risk Reduction purposes, but also serves for Recreation and Water Supply benefits.
The dam was designed by CESWT and commissioned in 1983 and is currently owned by USACE – Tulsa District.
Copan Dam Structure
The Copan Dam is approximately 7,730 feet (2,356 m) long, 73 feet (22 m) high and has a structural volume of 3,852,800 cubic yards (2,945,678 cubic metres).
Copan Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 43,400 acre-ft (53,533 Ml) and maximum capacity of 338,000 acre-ft (416,916 Ml).
The surface area of the reservoir is 4,850 acres (1,963 ha) and the total catchment area is 505 square miles (1,308 square kilometres).
Copan Dam Spillway
The dam has a 495 feet (151 m) wide controlled spillway with a maximum discharge capacity of 199070 cubic feet per second (5637 cubic metres per second).
Copan Dam Compared to Five Famous American Dams
Copan Dam Weather
Current Conditions at Copan Dam
Parameter | Value |
---|---|
Current Time | 23:17 |
Sunrise | 07:20 |
Sunset | 17:07 |
Temperature (°F) | 42 |
Feels Like (°F) | 34 |
Cloud Coverage (%) | 17 |
Pressure (inHg) | 1024 |
Humidity (%) | 73 |
Wind Speed (mph) | 15 |
Rain (mm) | 0 |
7-Day Forecast for Copan 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 | 25 | 47 | 34 | 1033 | 37 | 15 | 39 | SSW | 0 | - | |
Wed | 42 | 60 | 55 | 1020 | 57 | 15 | 40 | SSW | 0 | - | |
Thu | 31 | 43 | 31 | 1032 | 25 | 14 | 26 | NE | 0 | - | |
Fri | 30 | 48 | 43 | 1028 | 32 | 10 | 13 | SSW | 0 | - | |
Sat | 40 | 55 | 50 | 1025 | 55 | 13 | 26 | S | 0 | - | |
Sun | 44 | 52 | 49 | 1014 | 88 | 16 | 33 | S | 100 | 2 | |
Mon | 51 | 56 | 55 | 1008 | 84 | 14 | 25 | NNE | 100 | 2 | |
Tue | 35 | 48 | 33 | 1016 | 84 | 21 | 32 | NNE | 100 | 3 |
Copan Dam Frequently Asked Questions
Copan Dam is in Oklahoma.
Copan Dam is in Washington County.
Copan Dam is 73 feet high.
Copan Dam is 7,730 feet long.
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Bald Eagle Lake DamBarney Dam
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Copan Dam
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Brushy Creek Dam
Canton Dam
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Copan Dam
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Diamond Sevens Dam
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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