City of Grand IslandFlood Zones and Floodways in Hall County, Nebraska as defined by the Federal Emergency Management Agency (FEMA). Note that some areas may be modified by a Letter of Map Amendment (LOMA). See https://msc.fema.gov/portal/home for more details.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/e580cd86307340e4b94e45044a818294_1engCity of Grand Island Public GIS Data PortalPublicFEMA Floodways [Nebraska--Grand Island]Web servicesNebraska--Grand IslandNebraskaLast Modified: 2026-01-08