Renwick Dam, completed in 1962, is the last of a series of ten dams put in as a flood control project along the Tongue River. The structure no longer meets design and safety requirements and work will begin this year to retrofit it to current specifications.
NDPRD will provide updates on the project status and timeframe. The most current timeline puts the project into two phases.
Phase 1 – October 2010 through the summer of 2011, earth work and traffic detour to start. 2011 through 2012 – finish the restructurings of the added clay and time to allow to compact.
Phase 2 - Spring of 2013 through 2014, the rolled compacted concrete for the emergency spillway will be poured as well as the new road on the lake side of the rebuilt dam.
Update (10/8/2010): Work on the dam began this week, and the road crossing the dam has been closed. Access to the park campgrounds and beach area will be via the detour (see below) until the project has been completed.
Detour to Campground Entrance:
Dam Images:
Red lines are the earth fill areas and the yellow lines are the new concrete emergency spillway. The orange line is the route of the new road.
Computer generated picture of how the rebuilt dam with a 500 foot concrete emergency spillway will look at the completion.
For questions regarding this project, please contact the park at 701.265.4561 or email them at ISP (isp@nd.gov).
