The Bureau of Reclamation is seeking potential sources for a requirement to supply 25,000 tons of D100 16-inch riprap and 20,000 tons of bedding material, and to dress the stockpiles into manageable piles for the Lower Yellowstone River Bypass Canal. This is a sources sought notice for market research and planning purposes only, not a request for proposals. A firm-fixed-price contract is contemplated. The anticipated solicitation release date is August 26, 2026, with an expected period of performance from December 1, 2026 through November 30, 2027. Interested small businesses are encouraged to respond with a capabilities statement demonstrating their ability to meet the requirements.