LAKE OVERHOLSER NEAR OKLAHOMA CITY

35.49, -97.67
Last Updated: December 7, 2024

YEAR OVER YEAR

Overholser is a significant earth dam in Oklahoma City, Oklahoma, built in 1919 across the N. Canadian River for water supply purposes. The dam stands at an impressive 61 feet in height and spans 17,100 feet in length, with a storage capacity of 31,100 acre-feet and a normal storage level of 15,000 acre-feet. The reservoir created by Overholser covers an area of 1,500 acres and serves as a vital water resource for the region, with a drainage area of 738 square miles.

Despite its age, Overholser remains a key component of the local water supply infrastructure, with a controlled spillway and a maximum discharge capacity of 193,013 cubic feet per second. However, the dam is classified as having a high hazard potential and poor condition assessment, indicating the need for ongoing maintenance and potential upgrades to ensure its structural integrity. The risk assessment for Overholser is rated as very high, highlighting the importance of proactive risk management measures to safeguard the surrounding communities and water resources in the event of an emergency.

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Gage Height, Ft 24hr Change 0%
Percent of Normal 100%
Minimum 1,231.1 ft
2011-10-08
Maximum 1,243.45 ft
2013-06-02
Average 1,239 ft
Dam_Height 61
Hydraulic_Height 61
Drainage_Area 738
Year_Completed 1919
Nid_Storage 31100
Structural_Height 61
Primary_Dam_Type Earth
Foundations Soil
Surface_Area 1500
Hazard_Potential High
Outlet_Gates Slide (sluice gate) - 4, Tainter (radial) - 24, Uncontrolled - 1
River_Or_Stream N. CANADIAN RIVER
Dam_Length 17100
Nid_Height 61
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Point of Interest

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