River survey sections are provided as 3d points in a DWG file. These need to be converted to channel sections which needs to be done manually. There was previously a feature in RS that allowed the conversion.
Disclaimer: The development, release, and timing of any features or functionality described or discussed for our products in this User Feedback Forum for Autodesk Water Products and Services remains at our sole discretion. This User Feedback Forum for Autodesk Water Products and Services is not a commitment, promise, or legal obligation to deliver any functionality, is intended solely to outline and gather feedback about our general product direction, and should not be relied on in making purchasing decisions.