CITY OF DES MOINES SHORELINE MASTER PROGRAM

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Des Moines Shoreline Master Program 8. Shoreline protection activities that may necessitate new or increased shoreline protection on the same or other affected properties where there has been no previous need for protection is prohibited. 9. Shoreline modification may be allowed for environmental restoration or if the City determines that there will be a net increase in desired shoreline ecological functions. 6.2.2 Breakwaters A boulder riprap breakwater is present at the Des Moines Marina and a floating breakwater is present at the Redondo boat launch. 1. Expansion of existing hard breakwaters shall be considered only in the High-Intensity shoreline environment and shall require a Shoreline Conditional Use Permit. 2. New floating breakwaters shall be considered only in the High-Intensity shoreline environment and shall require a Shoreline Conditional Use Permit. 3. New or expanded breakwaters shall be allowed only to support water-dependent uses, public access, shoreline stabilization or other specific public purposes consistent with the provisions of this SMP. 4. All new or expanded breakwaters shall be designed and constructed so that down-current banks will not be adversely affected. Breakwaters shall be designed and constructed in a manner consistent with the Department of Fish and Wildlife, Corps of Engineers and/or other engineering and design specifications deemed appropriate by the Shoreline Administrator. 5. If existing breakwaters need to be rebuilt, replacement breakwaters shall be designed to minimize adverse effects to critical areas and provide mitigation for unavoidable impacts per the provisions of this SMP for environmental impact mitigation (Section 6.1.3). 6.2.3 Piers and Docks 1. New piers and docks or expansion of existing piers and docks may be allowed in High- Intensity environments and Aquatic environments when associated with water-dependent uses and/or public access in areas designated High-Intensity, subject to a Shoreline Conditional Use Permit. 2. New piers and docks are prohibited in the Urban Conservancy and Shoreline Residential environments. 3. Repair, maintenance, rehabilitation, or replacement of existing piers and docks shall be allowed within the High-Intensity shoreline environment given adherence to the following standards: a. A permit to construct a pier or dock must be obtained from the Corps of Engineers. b. Pier and dock construction shall be restricted to the minimum size necessary to meet the needs of the proposed use. c. Replacement of piers, docks and other moorages shall only be authorized after demonstrating that: Department of Ecology approval effective November 1, 2010 72 Adopted by City of Des Moines Ordinance No. 1502
Des Moines Shoreline Master Program i. Piers and docks shall be designed and constructed to avoid, or if that is not possible, to minimize and mitigate the impacts to ecological functions, critical areas resources such as eelgrass beds and fish habitats and processes such as currents and littoral drift, in accordance with guidance provided by WAC 13-26-221(2)(c) (iii) and (iv). Impact minimization shall include the use of construction materials approved by applicable state agencies. ii. The effect such structures have on navigation, water circulation, recreational and commercial boating, sediment movement and littoral drift and shoreline access have been minimized or mitigated. d. Open pile pier construction shall be required where there is significant littoral drift, where scenic values will not be impaired and where minimal alteration to the shoreline and minimal damage to aquatic resource can be assured. e. Floating pier construction shall be required in those areas where scenic values are high. f. Piers or docks that are abandoned or structurally unsafe shall be abated. 6.2.4 Jetties and Groins 1. Jetties and groins are prohibited in all shoreline environments. 6.2.5 Dredging 1. Dredging activities, including disposal of dredge material, in any shoreline environment require a Conditional Use Permit and must comply with all federal and state regulations. 2. Dredging activities are allowed in the Shoreline Residential and Urban Conservancy shoreline environments only where necessary to protect public safety. 3. Dredging activities are allowed in the High-Intensity environment where necessary for navigation. Dredging for navigational purposes should be allowed where necessary for assuring safe and efficient accommodation of existing navigational uses and then only when significant ecological impacts are minimized and when mitigation is provided. Maintenance dredging of established navigation channels and basins should be restricted to maintaining previously dredged and/or existing authorized location, depth, and width. 4. Dredging of bottom materials for the single purpose of obtaining fill material is prohibited. 5. Dredging and excavation in critical areas is prohibited. 6. Where allowed, dredging operations must be scheduled so as to not damage shoreline ecological functions or processes. 7. When dredge spoils have suitable organic and physical properties, dredging operators shall recycle dredged material into areas of the City suitable for those materials. Disposal of dredge material on shorelands shall be discouraged. 6.2.6 Fill 1. Fill activities shall only be allowed in association with allowed (permitted) water dependent use developments. Fill associated with non-water dependent uses shall be prohibited. Department of Ecology approval effective November 1, 2010 Adopted by City of Des Moines Ordinance No. 1502 73
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CITY OF DES MOINES SHORELINE MASTER PROGRAM

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