Department of Conservation and Recreation; federal National Flood Insurance Program; guidance document. Requires the Department of Conservation and Recreation, in collaboration with the Department of Health, Department of Environmental Quality, Department of Transportation, Marine Resources Commission, Virginia Institute of Marine Science, representatives from localities, and any other state agency issuing permits in a floodplain, to develop and maintain a comprehensive guidance document to assist localities in complying with federal floodplain management requirements under the National Flood Insurance Program. The bill requires such guidance document to provide the proper implementation of enforcement provisions regulating development in floodplain management areas, including floodplain permitting requirements for all man-made development, within localities that participate in the National Flood Insurance Program. The bill requires the Department to review and revise the guidance document, with input from other state agencies and representatives of localities, at least every five years.