General Information

At its meeting on June 28, 2016, the Board of Supervisors voted to partially breach Milltown Dam, Alternate 10 – Partial Breach – Reduce Hazard Class. See the agenda for the meeting for more details.


Milltown Dam Report – The Milltown Dam Assessment and Alternatives Analysis is available for review. You can access the file by clicking on one of the links below.

The file is very large (51 mb) so we have also posted a reduced size file (23 mb).  Both documents are identical although the file reduction process does change the look of the text in the 23 mb file.

Milltown Dam Report – Full Report

Milltown Dam Report – Reduced Size Report


09/08/2016 Engineering Contract for Milltown Dam
08/05/2016 Annual Inspection Report
08/05/2016 Annual Inspection Letter
08/05/2016 Annual Dam Inspection Checklist
06/14/2016 Milltown Reservoir – Supplement Sediment Report
05/27/2016 Milltown Dam Sediment Sampling Results
05/27/2016 1,000 foot letter for special meeting on 6/28/2016 to discuss the various options and make a decision for the Hershey’s Mill and Milltown Dams
March 22, 2016 Milltown Dam Presentation
Milltown Property Plat – January 2016
Milltown Dam – 2015 Annual Dam Inspection – Gannett Fleming
2014 Milltown Dam Inspection Cover Letter – July 14, 2015

2014 Milltown Dam Inspection Report – July 14, 2015
Acceptance of Proposal Letter to Gannett Fleming – June 17, 2015
Surveying Proposal (Pennoni) – June 04, 2015
Draw Down Permit 41-15 – May 21, 2015
Request for Proposals – May 7, 2015
Application for Draw Down Permit – April 28, 2015
Draw Down Permit 31-15 – April 23, 2015
Application for Draw Down Permit – March 31, 2015
Milltown Dam Proposal – Schnabel – June 08, 2015
Milltown Dam Proposal – McCormick Taylor, Inc. – June 08, 2015
Milltown Dam Proposal – Gannett Fleming – June 08, 2015
Pennoni DEP Meeting – March 30, 2015
Pennoni Cost Estimate/Alternative Analysis – December 9, 2014
HEC-1 Model (spillway adequacy at 0.14 PMF) October 2, 2014
Bid Rejection Letter – September 17, 2014
Incremental Analysis & Construction Cost Estimates (Pennoni) – September 11, 2014
Gate Valve Replacement Bids Memo to Board of Supervisors – September 10, 2014
Bid Results for Valve Replacement –  August 14, 2014
2013 Annual Dam Inspection Report – August 11, 2014 Report
Hydrologic and Hydraulic Review and Update – July 18, 2014
HEC-1 Model (100-year flood, 500-year flood and the 1/2 PMF) – July 16, 2014
Letter from PA DEP – June 17, 2014
PA Dam Safety Regulations January 11, 2011
Excerpt from PA Bulletin – January 8, 2011
Location Map – October 22, 2010
Emergency Notice – October 22, 2010
Warning Message – October 22, 2010
Emergency Action Plan – October 22, 2010
Inundation Map – July 14, 2010 (Must open or download PDF)
Traffic Control Map – July 14, 2010 (Must open or download PDF)
Promulgation and Concurrence – March 8, 2010
Auditor General Performance Audit – May 1, 2008
Yerkes Repair Work As-Built Plan – Issued December 16, 1986
Yerkes Repair Work Plans – Issued January 30, 1985 – Page # 1 of 5
Yerkes Repair Work Plans – Issued January 30, 1985 – Page # 2 of 5
Yerkes Repair Work Plans – Issued January 30, 1985 – Page # 3 of 5
Yerkes Repair Work Plans – Issued January 30, 1985 – Page # 4 of 5
Yerkes Repair Work Plans – Issued January 30, 1985 – Page # 5 of 5
Phase I Inspection Report Plates – July 1981
Phase I Inspection Report – National Dam Inspection Program
NOAA Hydrometeorological Report No. 51 – June 1978
Colesworthy Original Plans for Dam – January 14, 1920 – Drawing # 1 of 3
Colesworthy Original Plans for Dam – January 14, 1920 – Drawing # 2 of 3
Colesworthy Original Plans for Dam – January 14, 1920 – Drawing # 3 of 3