You have reached a page maintained by the NWS Office of Hydrologic Development (OHD) Hydrologic Science and Modeling Branch (HSMB) Hydraulics Group. We no longer have funds to support FLDWAV code outside of NWS operations. Versions of FLDWAV are available commercially and can be found through web searches. We are planning to transition from using FLDWAV to using the United States Army Corps of Engineer's Hydrologic Engineering Center River Analysis System (HEC-RAS) software.