SNOFLO
 


LEMOLO NO 1

RESERVOIR LEVELS
Rock, Soil Dam North Umpqua River
May 8, 2025


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Lemolo No 1 is a captivating hydroelectric dam located in Idleyld Park, Oregon, along the picturesque North Umpqua River. Built in 1955 by Pioneer Service & Engineering, this rockfill dam stands at an impressive height of 120 feet and boasts a storage capacity of 19,000 acre-feet. With a primary purpose of generating hydroelectric power, the dam also provides opportunities for recreational activities in its vicinity.

Managed by the Federal Energy Regulatory Commission, Lemolo No 1 is a vital infrastructure for water resource and climate enthusiasts. The dam's controlled spillway, with a width of 100 feet, ensures the safe release of excess water during high flow events. With a hazard potential rated as high and a risk assessment indicating a very high risk level, the dam is closely monitored and inspected to ensure public safety and environmental protection.

Despite its age, Lemolo No 1 continues to play a crucial role in water management and renewable energy production in Douglas County, Oregon. Its strategic location, impressive height, and significant storage capacity make it a key player in the region's water resource infrastructure. For enthusiasts interested in water management and climate resilience, Lemolo No 1 is a fascinating example of engineering ingenuity and environmental stewardship.

Year_Completed 1955
Dam_Height 120
River_Or_Stream North Umpqua River
Dam_Length 885
Primary_Dam_Type Rockfill
Surface_Area 419.1
Hydraulic_Height 109
Drainage_Area 175
Nid_Storage 19000
Structural_Height 120
Outlet_Gates Tainter (radial) - 1
Hazard_Potential High
Foundations Rock, Soil
Nid_Height 120
       

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