US Army Corps of Engineers
Philadelphia District & Marine Design Center Website

General Edgar Jadwin Dam

Honesdale, PA

USACE Philadelphia District
Published July 2, 2021
The General Edgar Jadwin Dam was constructed by the U.S. Army Corps of Engineers in 1960 and has prevented more than $34 million in flood damages.

The General Edgar Jadwin Dam was constructed by the U.S. Army Corps of Engineers in 1960 and has prevented more than $34 million in flood damages.

Project Index Map for General Edgar Jadwin Dam

Project Index Map for General Edgar Jadwin Dam

The General Edgar Jadwin Dam was constructed by the U.S. Army Corps of Engineers in 1960 and has prevented more than $34 million in flood damages.

The General Edgar Jadwin Dam was constructed by the U.S. Army Corps of Engineers in 1960 and has prevented more than $34 million in flood damages.

Jadwin Dam, located approximately three miles above the confluence of Dyberry Creek with Lackawaxen River, in Honesdale, Pa, experienced high water conditions following Hurricane Ivan in 2004.

Jadwin Dam, located approximately three miles above the confluence of Dyberry Creek with Lackawaxen River, in Honesdale, Pa, experienced high water conditions following Hurricane Ivan in 2004.

Jadwin Dam, completed in 1960, consists of a single purpose flood control reservoir formed by a dam on Dyberry Creek, located approximately three miles above the confluence of Dyberry Creek with Lackawaxen River, in Honesdale, Pa.

Jadwin Dam, completed in 1960, consists of a single purpose flood control reservoir formed by a dam on Dyberry Creek, located approximately three miles above the confluence of Dyberry Creek with Lackawaxen River, in Honesdale, Pa.

CONGRESSIONAL DISTRICTS: PA-8

APPROPRIATION / PHASE: Operation & Maintenance, General

BUSINESS PROGRAM: Flood Damage Reduction

LOCATION: Lackawaxen River Basin

DESCRIPTION: The existing project, adopted in 1948, consists of a single purpose flood control reservoir formed by a dam on Dyberry Creek, located approximately three miles above the confluence of Dyberry Creek with Lackawaxen River, in Honesdale, Pa. This project has prevented over $36 million in cumulative damages between 1960 and 2020.

STATUS: The Army Corps performs routine operations and maintenance activities for the project and grounds, dam safety actions and oversight, water control and other data collection and analyses, and real estate actions as required. 

A Screening for Dam Safety Portfolio Risk Assessment was conducted in 2009 resulting in a Dam Safety Action Classification (DSAC) rating of II for this project. As a result of the DSAC II rating, a required Interim Risk Reduction Measures Plan was finalized and approved in FY12 and an Issue Evaluation Study in the form of a Semi-Quantitative Risk Assessment was done in 2015. The draft Jadwin Dam Safety Modification Study (DSMS) was completed in FY18 and recommend a risk management plan to address the problems identified. The DSMS was completed and approved in May 2019. The DSMS recommended a Tentatively Selected Plan that consists of the installation of 400-feet wide geosynthetic liner on the upstream face of dam to limit seepage through the dam. The Pre-construction Engineering and Design Phase for this work is scheduled for completion in June 2021. A construction contract will be awarded in calendar year 2021 using FY21 Construction General funding. Construction will commence in early 2022 and be completed by December 2022.

PROJECT GOALS: The purpose of this project provides for routine operation & maintenance of the dam and related structures, water control data collection & analysis, real estate, continuing evaluation data gathering & analysis, and dam safety efforts.

PROJECT MANAGER: Monica A. Chasten