SNOFLO
 



GENERAL EDGAR JADWIN DAM

RESERVOIR LEVELS
Rock Dam Dyberry Creek
April 13, 2025


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General Edgar Jadwin Dam, also known as Jadwin Dam, is a rockfill dam located in Honesdale, Pennsylvania, along Dyberry Creek. Completed in 1960 by the US Army Corps of Engineers, the dam stands at a structural height of 110 feet and has a maximum storage capacity of 47,300 acre-feet. The primary purpose of the dam is flood risk reduction, with a spillway width of 164 feet to manage uncontrolled flow during extreme flood events.

Despite being classified as having a high hazard potential due to the possibility of a breach during intense rainfall events, USACE has implemented risk management measures to address the problem soil layer within the dam. A recent Dam Safety Modification Study has led to the design of permanent repairs aimed at reducing the risk associated with the dam. Regular inspections, monitoring, and emergency preparedness measures are in place to ensure the safety of downstream communities, such as Honesdale and Hawley, in the event of a potential flood event.

With a history of reaching problem soil layers during reservoir elevation, the effectiveness of repairs made in 1970 remains uncertain. However, USACE's commitment to ongoing monitoring, data analysis, and emergency exercises with local authorities demonstrates their dedication to mitigating risks associated with General Edgar Jadwin Dam and ensuring the safety of surrounding areas.

Year_Completed 1960
River_Or_Stream DYBERRY CREEK
Dam_Length 1255
Primary_Dam_Type Rockfill
Surface_Area 1
Hydraulic_Height 97
Drainage_Area 65
Nid_Storage 47300
Structural_Height 110
Outlet_Gates Uncontrolled - 0
Hazard_Potential High
Foundations Rock
Nid_Height 110
       

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