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1 923 Floodway District (FW)
<br />2 (A) Permitted uses. the following uses, subject to the standards set forth in section 923(B), are permitted
<br />3 uses if otherwise allowed in the underlying zoning district or any applicable overlay district:
<br />4 (1) General farming, pasture, grazing, outdoor plant nurseries, horticulture, truck farming,
<br />5 forestry, sod farming, and wild crop harvesting.
<br />6 (2) Industrial -commercial loading areas, parking areas, and airport landing strips.
<br />7 (3) Open space uses, including but not limited to private and public golf courses, tennis courts,
<br />8 driving ranges, archery ranges, picnic grounds, boat launching ramps, swimming areas, parks,
<br />9 wildlife and nature preserves, game farms, fish hatcheries, shooting preserves, hunting and
<br />10 fishing areas, and single or multiple purpose recreational trails.
<br />11 (4) Residential lawns, gardens, parking areas, and play areas.
<br />12 (5) Railroads, streets, bridges, utility transmission lines and pipelines, provided that the
<br />13 department of natural resources' area hydrologist is notified at least ten days prior to issuance
<br />14 of any permit, and that the standards in sections 923(D)(1), 923(D)(3) and 923(D)(6) are met.
<br />15 (B) Standards for flood way permitted uses:
<br />16 (1) The use must have a low flood damage potential.
<br />17 (2) With the exception of the uses listed in section 923(A)(5), the use must not obstruct flood
<br />18 flows or increase flood elevations and must not involve structures, fill, obstructions,
<br />19 excavations or storage of materials or equipment.
<br />20 (3) Any facility that will be used by employees or the general public must be designed with a flood
<br />21 warning system that provides adequate time for evacuation if the area is inundated to a depth
<br />22 and velocity such that the depth (in feet) multiplied by the velocity (in feet per second) would
<br />23 exceed a product of four upon occurrence of the regional (one percent chance) flood.
<br />24 (C) Conditional uses. The following uses may be allowed as conditional uses following the standards
<br />25 and procedures set forth in section 931(D) of this subdivision and further subject to the standards
<br />26 set forth in section 923(D), if otherwise allowed in the underlying zoning district or any applicable
<br />27 overlay district.
<br />28 (1) Structures accessory to the uses listed in section 923(A) and the uses listed in subsections
<br />29 (c)(2) through (9) below.
<br />30 (2) Extraction and storage of sand, gravel, and other materials.
<br />31 (3) Marinas, boat rentals, docks, piers, wharves, and water control structures.
<br />32 (4) Storage yards for equipment, machinery, or materials.
<br />33 (5) Placement of fill or construction of fences that obstruct flood flows. Farm fences, as defined
<br />34 in section 105, are permitted uses.
<br />35 (6) Travel -ready recreational vehicles meeting the exception standards in section 927(D)(2).
<br />36 (7) Levees or dikes intended to protect agricultural crops for a frequency flood event equal to or
<br />37 less than the ten-year frequency flood event.
<br />38 (D) Standards for floodway conditional uses:
<br />39 (1) All uses. A conditional use must not cause any increase in the stage of the one percent chance
<br />40 or regional flood or cause an increase in flood damages in the reach or reaches affected.
<br />41 (2) Fill; storage of materials and equipment:
<br />42 a. The storage or processing of materials that are, in time of flooding, flammable,
<br />43 explosive, or potentially injurious to human, animal, or plant life is prohibited.
<br />44 b. Fill, dredge spoil, and other similar materials deposited or stored in the floodplain must
<br />45 be protected from erosion by vegetative cover, mulching, riprap or other acceptable
<br />46 method. Permanent sand and gravel operations and similar uses must be covered by a
<br />47 long-term site development plan.
<br />48 c. Temporary placement of fill, other materials, or equipment which would cause an
<br />49 increase to the stage of the one percent chance or regional flood may only be allowed
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