Peirce Mill Dam - Washington, D.C.
N 38° 56.427 W 077° 03.121
18S E 322155 N 4312170
Quick Description: Peirce Mill Dam, completed in 1906 to create a scenic waterfall on Rock Creek, is located in Washington, D.C., USA.
Location: District of Columbia, United States
Date Posted: 7/4/2008 6:20:24 AM
Waymark Code: WM43ZE
Views: 43
Long Description: 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).