The Department of Defense, through the Engineer Research and Development Center (ERDC), is launching a Commercial Solutions Opening (CSO) aimed at addressing the critical issue of Harmful Algal Blooms (HABs) affecting U.S. freshwater resources. The initiative seeks innovative and scalable solutions for the prevention, detection, and management of HABs, with a focus on reducing their frequency and impact on water resource development projects as authorized by the Water Resources Development Act of 2020. A total of $9 million is available for this program, which emphasizes the importance of technologies that have been validated at smaller scales and can demonstrate efficacy for broader implementation. Interested parties must submit their proposals via the ERDCWERX platform by January 22, 2025, and are encouraged to contact Crystal Elizabeth North at crystal.e.north@usace.army.mil or Sonia Boyd at SONIA.J.BOYD@USACE.ARMY.MIL for further information.