D-Notice of Intent to Sole Source-FLOW-3D Software

The U.S. Geological Survey (USGS) intends to award a sole source contract for FLOW 3D HYDRO a computational fluid dynamics (CFD) software. This notice is issued in accordance with Revolutionary FAR Overhaul (RFO) 12.102(a), which specifies that Part 12 acquisition procedures apply to commercial products and services and shall take precedence where inconsistencies exist with other FAR parts. The USGS Eastern Ecological Science Center relies on FLOW 3D HYDROa computational fluid dynamics (CFD) softwareto support ongoing and future hydraulic engineering and fish passage research. Continuity of maintenance and technical support is required to ensure uninterrupted access to software updates, corrections, and assistance, enabling timely capture, processing, and dissemination of scientific data.