§ 24.20.065. Floodways—Development and uses.

Encroachments, including new construction, substantial improvements, fill and other development, are prohibited within designated floodways, unless otherwise authorized by this chapter.

A.

In addition to the requirements of Chapter 24.45 TCC, a reasonable use exception for development in a floodway shall be required to demonstrate the following:

1.

Hydrologic and hydraulic analyses performed by a registered professional engineer licensed in the State of Washington, that demonstrate, in accordance with standard engineering practices, that the proposed project will not result in an increase in flood levels during discharge of the base flood.

2.

New construction and substantial improvements, as defined in TCC 14.38.020 shall comply with all applicable flood hazard reduction provisions in Chapter 14.38 TCC.

B.

Recreational Vehicles.

1.

Recreational vehicles parked in the floodway shall not be left unattended for more than twenty-four consecutive hours during the flood season, between November 1 and March 15; and

2.

Travel trailers parked in the floodway shall have the wheels and tongue attached for ease and rapidity of evacuation. Only quick disconnect utilities may be used. Permanent additions to travel trailers parked in the floodway are prohibited.

C.

Temporary structures and hazardous materials shall be removed from the floodway during flood season (i.e., November 1 to March 15). If the approval authority determines that flooding is imminent and the owner is not present, they may, at the owner's expense, move the structure(s), its contents, and any vehicles to higher ground.

D.

For any approved development in the floodway, a notice shall be recorded on the property title indicating that its use is subject to Title 24 TCC and Chapter 14.38 TCC.

E.

Projects specifically designed to protect, create or restore anadromous/native fish habitat may be allowed in or along Type S and F streams without the hydrologic and hydraulic engineering analysis, if the approval authority determines that the project will not significantly obstruct flood flows or increase flood elevations. If the effect of the proposed project on flooding is in doubt, the approval authority may require that a qualified professional in the field of hydraulics review the proposed project consistent with paragraph (A)(1) above, at the applicant's expense, in order to determine if it will exacerbate flooding.

(Ord. No. 14773, § 3(Att. B), 7-24-2012)