Linn County, IA Environmental Rules: Flood Zones (2026)

(2)Floodplain development permit required. A floodplain development permit issued by the zoning administrator shall be secured prior to initiation of any floodplain development (any manmade change to improved or unimproved real estate, including, but not limited to, buildings or other structures, mining, filling, grading, paving, excavation or drilling operations) including the placement of factory-built homes. a.Application for floodplain development permit. Application for a floodplain development permit shall be made on forms supplied by the zoning administrator and shall include the following information: 1.Description of the work to be covered by the permit for which application is to be made. 2.Description of the land on which the proposed work is to be done (i.e., lot, block, tract, street address or similar description) that will readily identify and locate the work to be done. 3.Location and dimensions of all buildings and building additions. 4.Identification of the use or occupancy for which the proposed work is intended. 5.Elevation of the base flood. 6.Elevation (in relation to North American Vertical Datum 1988) of the lowest floor (including basement) of building or of the level to which a building is to be floodproofed. 7.For buildings being improved or rebuilt, the estimated cost of improvements and market value of the building prior to the improvements.