Peirce Mill Dam - Washington, D.C. - Water Dams on Waymarking.com

This dam is located behind the historic Peirce Mill. A sign at the dam provides the following information: "Peirce Mill Dam was completed in 1906 to create a scenic waterfall on Rock Creek. Since its construction, the dam has prevented spawning herring and other migratory and resident fish from swimming further upstream. A Denil fishway was installed in 2006 to provide fish access to the upper reaches of the creek. This fishway consists of a series of baffles inserted into a concrete channel. The channel passes between the stone walls located on the east side of the dam. The baffles act like rungs in a ladder. Now the fish can swim from level to level up and over the dam. Arrows point to the fishway entrance and exit. This fishway and the removal or alteration of other obstacles has restored the "Herring Highway", the ancestral spawning route of Blueback herring and Alewife." Additional information about the fishway project is available on the internet (visit link).

Waterway where the dam is located: Rock Creek in Washington, D.C. Main use of the Water Dam: Other Material used in the structure: masonry Height of Dam: 12 feet Date built: 01/01/1904 Fishing Allowed: Not Listed Motor Sports Allowed: Not Listed

Visit Instructions:
Photo of the Dam and a description of your visit.

Recent Visits/Logs:

Date Logged Log User Rating   09/08/2013 Searcher28 visited it 04/28/2012 Andy961 visited it 07/09/2011 ahight visited it 10/21/2009 geoczar1 visited it 01/07/2009 pseudoprime visited it 05/17/2008 Marine Biologist visited it

View all visits/logs