The U.S. Army Corps of Engineers, Portland District, is conducting market research for potential professional architect-engineering services focused on hydrographic mapping and surveying. The extensive project scope includes services like multi-beam and side scan sonar surveys, geodetic control, and environmental monitoring, to be performed under the supervision of certified specialists. This is a sources sought notice to gauge industry interest and capabilities for a potential future solicitation, with an anticipated advertisement date in April 2026. Interested small businesses, under NAICS 541370 with a $19 million size standard, are highly encouraged to submit their capabilities and relevant project experience. Responses are due via email by 5 January 2026 at 3:00 pm Pacific Time.