Agenda - Council Work Session - 10/17/2023 - Special

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Right-of-way line of federal,state, or county highway 50 Right-of-way line of town road, public street, or other roads or streets not classified 20 1 2 C. Bluff impact zones. Structures and accessory facilities, except stairways and landings, 3 must not be placed within bluff impact zones. 4 d. Uses without water-oriented needs. Uses without water-oriented needs must be 5 located on lots or parcels without public waters frontage,or,if located on lots or parcels 6 with public waters frontage, must either be set back double the normal ordinary high 7 water level setback or be substantially screened from view from the water by 8 vegetation or topography, assuming summer, leaf-on conditions. 9 (2) Design criteria for structures. 10 a. High water elevations. Structures must be placed in accordance with any floodplain 11 regulations applicable to the site. Where these controls do not exist, the elevation to 12 which the lowest floor, including basement, is placed or floodproofed must be 13 determined as follows: 14 1. For lakes, by placing the lowest floor at a level at least three feet above the 15 highest known water level, or three feet above the ordinary high water level, 16 whichever is higher; 17 2. For rivers and streams, by placing the lowest floor at least three feet above the 18 flood of record, if data are available. If data are not available, by placing the 19 lowest floor at least three feet above the ordinary high water level, or by 20 conducting a technical evaluation to determine effects of proposed construction 21 upon flood stages and flood flows and to establish a flood protection elevation. 22 Under all three approaches, technical evaluations must be done by a qualified 23 engineer or hydrologist consistent with Minn. Rules pts. 6120.5000-6120.6200 24 governing the management of floodplain areas. If more than one approach is 25 used,the highest flood protection elevation determined must be used for placing 26 structures and other facilities; and 27 3. Water-oriented accessory structures may have the lowest floor placed lower than 28 the elevation determined in this item if the structure is constructed of flood- 29 resistant materials to the elevation, electrical and mechanical equipment is 30 placed above the elevation and, if long duration flooding is anticipated, the 31 structure is built to withstand ice action and wind-driven waves and debris. 32 b. Water-oriented accessory structures. Each lot may have one water-oriented accessory 33 structure not meeting the normal structure setback in this subdivision if this water- 34 oriented accessory structure complies with the following provisions: 35 1. The structure or facility must not exceed ten feet in height, exclusive of safety 36 rails, and cannot occupy an area greater than 250 square feet. Detached decks 37 must not exceed eight feet above grade at any point; 38 2. The setback of the structure or facility from the ordinary high water level must be 39 at least ten feet; 40 3. The structure or facility must be treated to reduce visibility as viewed from public 41 waters and adjacent shorelands by vegetation,topography,increased setbacks or 42 color,assuming summer, leaf-on conditions; 43 4. The roof may be used as a deck with safety rails,but must not be enclosed or used 44 as a storage area; 45 5. The structure or facility must not be designed or used for human habitation and 46 must not contain water supply or sewage treatment facilities; and Page 137 of 160