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Lake Boutin Dam – Jackson, MO

Missouri State Parks

Reitz & Jens was retained by the Missouri OA, Division of Facilities Management, Design & Construction, on behalf of the Missouri State Parks to design repairs to improve the stability and increase spillway capacity at Lake Boutin Dam after several slides occurred on the upstream and downstream slopes of the dam.

Reitz & Jens performed geotechnical investigations and laboratory testing to characterize the dam fill and foundation soils. Slope stability and finite element seepage analyses were performed to determine a stable geometry, including short-term, steady-state, rapid-drawdown, and seismic load cases. Hydrological analyses were performed for the spillway design, including erodibility analysis. Plans and specifications were prepared for a new concrete weir, open-channel spillway, grouting of the existing spillway conduit, upstream wave erosion protection and dam embankment modifications that included decreasing the steepness of the upstream and downstream slopes, lowering the dam crest, a stability berm, blanket drain, and toe drain. Reitz & Jens prepared the applications, reports, plans and specifications to obtain the MDNR Dam and Reservoir Safety Construction Permit.

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Environmental & Civil Engineering Geotechnical Water Resources