Raise 13,000 LFof embankments along Devil’s Lake from elevation 1461.2 to 1468.2. Construct a new interior drainage pump station/gatewell and remove and demo the existing pump station. Pump station consists of structural headwall with 72” diameter inlet piping capable of discharging 280,000 GPM through eight 42” HDPE discharge lines connected to a gatewell structure constructed within an earthen cofferdam 300′ into the lake. Install new primary and secondary power transformers and ductbank, elevated concrete deck with steel joist and deck for pump station, electrical components and pumps, automated grease lubrication system for main pumps, 72” electrically actuated steel gates, 10-ton bridge crane, and overhead suspended grab rake system for solids collection.
Cost: $ 47.7M
Construction Period: 03/2011 – 07/2013