USACE Walla Walla District seeks market-research information from firms capable of constructing the Mill Creek Section 205 Flood Risk Management Improvements in and near Walla Walla and College Place, Walla Walla County, Washington. The estimated construction magnitude is $10,000,000 to $25,000,000, with 100% performance and payment bonds and a bid guarantee required under NAICS 237990. Work includes levee raising/enlargement, gabion and riprap placement, concrete walls and access ramps, concrete-channel repair/demolition, soil anchors and shotcrete stabilization, vegetation/fence removal, and work within or adjacent to the active channel. The project spans upstream, concrete, and downstream channel sections on federal and private property and requires access coordination, utility and traffic control, in-channel water control, shoring, and concurrent management of multiple sites. This is a sources-sought/market-research notice only, not a solicitation, and responses will help determine acquisition strategy, including whether a small-business set-aside is appropriate.