Corps of Engineers to host public meeting on draft Indian Rock Dam master plan

Published May 14, 2019

The U.S. Army Corps of Engineers invites the surrounding community to attend a public meeting June 6 to review, submit feedback and comment on the draft Indian Rock Dam Master Plan and draft Environmental Assessment (EA).

The public meeting will be held from 6 to 8 p.m. at the York-New Salem Community Fire Company 1 located at 65 E. George St. in York-New Salem. The format of the meeting will include an open house discussion with project team members from 6 - 7 p.m., followed by a formal project presentation and questions and answers session beginning at 7 p.m.

The draft master plan and draft EA can be found on the project website; are available for review at the Glatfelter Memorial Library located at 101 Glenview Rd. in Spring Grove and the Martin Library located at 159 E. Market St. in York; and will also be available at the public meeting. 

The public can provide comments and feedback regarding the draft EA and draft master plan to Melanie Mathesz at Additionally, questions can be mailed to U.S. Army Corps of Engineers, Planning Division, Subject: Indian Rock Dam Project, 2 Hopkins Plaza, Baltimore, MD 21201.

All updates regarding the Master Plan revision, public meeting information and ways to submit comments or questions may be found on the following site:

About the Indian Rock Dam Master Plan Revision

Indian Rock Dam is located about three miles upstream from York, Pennsylvania. The dam is a part of the Indian Rock Dam/Codorus Creek Project, which includes channel improvements on Codorus Creek. The Indian Rock Dam/Codorus Creek project has prevented an estimated $54.6 million in flood damages for the local community.

The Indian Rock Dam project was authorized by the Flood Control Act of June 22, 1936, as amended by the Flood Control Act of June 28, 1938. The normally dry reservoir has a storage capacity of 28,000 acre-feet (9.1 billion gallons) at spillway crest and controls a drainage area of 94 square miles, equivalent to 41 percent of the watershed upstream from York. In conjunction with the Codorus Creek project, these projects reduce risk to the York community against flood discharges about 33 percent greater than the record flood of August 1933.

Master Plans are project-centered documents designed to provide a framework for consistent, responsible decision-making for the next 15 to 25 years for dam sites throughout the Corps.  The Indian Rock Dam Master Plan Revision is a part of a larger, Corps-wide effort to bring master plans up to date across the country. The primary goals of the Indian Rock Master Plan revision are to improve infrastructure and utilities, enhance existing recreation sites and amenities and invest in key operational and support facilities.

Master Plans have no set timeframe for revisions, but they are developed to have an effective lifespan of 15 to 25 years. The current Master Plan for Indian Rock Dam dates back to 1959.

The Master Plan revision will not change the technical operations of the dam related to its primary mission of flood risk management.

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Rebecca Nappi

Release no. 19-008