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Kittitas County Shoreline Master Program <br />land cover); surficial geology, low soil erosion potential; lack of evidence of <br />likely avulsion pathways (including areas upstream of, but proximate to, the <br />site); low inundation frequency(ies). The assessment shall include a review <br />of available data regarding historical channel locations at the site; <br />identification of the site within a broader geomorphic reach of the river <br />system, and the general characteristics of that reach; description of existing <br />channel type, existing channel alterations and likelihood of future alterations <br />with changes in land cover; surficial geology, soils and erosion potential; <br />and geotechnical setbacks relating to erosion at the toe of adjacent slope(s) <br />The approach to assessing local migration shall be generally equivalent to <br />the methods detailed in "A Framework for Delineating Channel Migration <br />Zones" (Ecology Publication # 03-06-027), or similar method approved or <br />sanctioned by Ecology. <br />8, Based upon the results of the channel migration zone assessment, the Administrator <br />may prohibit or limit use or development within a channel migration zone and/or <br />require a buffer of undisturbed natural vegetation from the edge of the channel <br />migration zone. <br />9. The Administrator may impose conditions on any new shoreline use and <br />developments in a geologically hazardous area as needed to: <br />a. Protect slope stability and minimize erosion, seismic, and/or landslide hazard <br />risks; <br />b. Maintain natural sediment and erosion processes that are integral to the health <br />and sustainability of freshwater ecosystems; <br />c. Minimize the potential for property damage related to seismic events, erosion <br />and/or landslides; <br />d. Minimize the need for structural shoreline stabilization in the future; <br />e. Protect human health and safety; andf. Reduce public liabilities for damages associated with seismic events, erosion <br />and/or landslides. <br />Q. Requlations-frequentlv flooded area desiqnation and mappinq <br />1. Designation and mapping: All lands classified as floodway or special flood hazard <br />areas in the Federal Emergency Management Agency report titled "Flood lnsurance <br />Rate Maps and Flood Boundary and Floodway Maps" dated November 5, 1980, as <br />now or hereafter amended are designated as frequently flooded areas. The report <br />and maps are on file at Kittitas County. When base flood elevation data has not <br />been provided in the report, the Administrator shall obtain, review, and reasonably <br />utilize any base flood elevation and floodway data available from the Federal <br />Emergency Management Agency, Washington State Department of Ecology, or <br />other qualified source. Where base flood elevation data and floodway delineation are <br />not available either through the report or from a qualified source, historical data, high <br />Chapter 5 <br />March 7, 2016 <br />82