17.33.050 Specific regulations.
The following use regulations shall apply:
A. Fences. Fences will be allowed only if it can be determined through an engineering study that they can satisfy a no-rise (less than or equal to zero feet) in the FEMA and community BFE.
1. Exception. An engineering study may not be required for fences such as smooth or barbed wire fences that are constructed in a way that the fence will be pushed over or ripped out early in the flood or will swing in the direction of the flood flow. Fencing similar to the styles on pages 159-162 in the book, Fences, released by the Bureau of Land Management, United States Forest Service http://www.fs.fed.us/t-d/pubs/), and the Society for Range Management may also be considered as appropriate.
B. Planting or Removal of Trees and Shrubs. Deep-rooted vegetation within the flood channel provides critical protection against large scale erosion. However, dense stands of sturdy trees and woody shrubs can also obstruct the free flow of floodwaters. The best situation is scattered native trees with a dense groundcover of native shrubs and grasses that offer minimal resistance to the passage of floodwaters. No existing native vegetation shall be removed and no new trees shall be planted within the floodway without the written approval of the City floodplain administrator. For any clearing or revegetation activity, a stabilization plan is required to be submitted to the City for evaluation and approval by city staff.
C. Floodway to Be Kept Clear. The presence of debris such as fallen trees and tree limbs, construction materials, vehicles, or similar uses within the floodway represents a significant hazard to the community as the debris can be transported by the floodwaters and become lodged against one of the several bridge structures. The accumulation of debris or storage of materials is prohibited within the floodway. It shall be the property owner’s responsibility to keep the floodway portion of their property free of any such materials.
D. Prohibited Structures. No permanent structures such as sheds, dwellings, or permanent corrals shall be located in the floodway. (Ord. 15-05 (part), 2015: Ord. 09-06 (part), 2009; prior code § 27-12-4. Formerly 17.33.040)