Water Injection Dredging (WID) for Tuttle Creek Lake John Shelley, Ph.D., P.E. US Army Corps of Engineers Kansas City District [email protected] (816) 389-2310 Kansas Reservoirs Loss of Capacity Due to Sedimentation BUILDING STRONG® Sediment Accumulation in the Multipurpose Pool BUILDING STRONG® Tuttle Creek Lake: 1962 - 2010 4 BUILDING STRONG® Tuttle Creek Lake: 1962 5 BUILDING STRONG® Tuttle Creek Lake: 2010 6 BUILDING STRONG® At the same annual rate of sedimentation: . Multi-purpose pool will be 88% full in 50 years . Total storage (multi-purpose + flood control) will be 21% full BUILDING STRONG® Dredging with Land Disposal? 3,600 ac-ft/year into Tuttle’s multi-purpose pool At $6.7/yd3 = $39 M/year +++ Not a long-term strategy Cost increases as available disposal sites are filled BUILDING STRONG Does® not address the sediment deficit downstream From “Environmental Benefits of Restoring Sediment Continuity to the Kansas River” (Shelley et. al, 2016.) BUILDING STRONG® Reservoir Sediment Sustainability Sediment-rich water “What comes in, must go out!” Available Storage Sediment-rich water BUILDING STRONG® Reservoir Sediment Management Strategies • Water-injection Dredging • Sediment yield reduction • Sediment traps • Sediment bypass • Sediment pass-through (routing, sluicing) • Drawdown flushing • Hydrosuction • Inlet extension • Density current venting • Dredging with land disposal • Dredging with downstream recharge • Pressure flushing • Sediment focusing • Reallocation • New reservoirs/dam raises BUILDING STRONG® An Example of Passing the Incoming Sediment Load Downstream BUILDING STRONG® Dredging Discharge from Millsite Dam near Ferron, Utah Water Injection Dredging (WID) https://www.youtube.com/watch?v=JfVK5rLYXiM 0:12 – 1:06 BUILDING STRONG® Water Injection Dredging (WID) BUILDING STRONG® Worldwide WID BUILDING STRONG® Worldwide WID BUILDING STRONG® The Marine Group “150 m3/hr in soft material” BUILDING STRONG® Water Injection Dredge (WID) Weeks Marine BT 773 BUILDING STRONG® US WID Dredging Projects Traditional Operations Federal Navigation Private Dock Work New Orleans District Mississippi River • New Orleans Harbor • Grain Dock –Convent, LA • Michoud Canal • Refinery –Baton Rouge, LA • Miss. River Gulf Outlet • Refinery –Sunshine, LA • E & W Calumet Floodgates • Grain Dock –Destrehan, LA • Tiger Pass Channel • Chemical –Plaquemines, LA • Refinery –St. James, LA Galveston District • Barge Dock ‐Jefferson, LA • Houston Ship Channel • Refinery –St. James, LA • Bayport Ship Channel • Refinery –Jefferson, LA • Refining Facility –Baton Rouge, LA Mobile District • Agricultural –Jefferson, LA • Horn Island Atchafalaya River • Refinery –Krotz Springs, LA Source: WEEKS MARINE WID has been used in channels, harbors, and ports, but not in BUILDING STRONG® reservoirs. Remaining Questions . How effective will this technology be at Tuttle Creek Lake? . How much will long-term operation of a WID cost per cubic yard of sediment removed? . What will the response of the Kansas River be to increased (restored) turbidity? BUILDING STRONG® Potential Demonstration Project Engineering Research Kansas City District and Development Center U.S. Army Corps of Engineers BUILDING STRONG® QUESTIONS? BUILDING STRONG®.