Article 10, Section 10-2
Dimensional standards
Servicing
- Applies near
- Special Flood Hazard Area
- Geographic extent
- All lands within Nelson County identified as being in the 100-year floodplainFloodplainLand expected to flood at a stated frequency, where building carries extra conditions. by the Federal Insurance Administration
Uses
Prohibited3
- critical facilities
- storage of hazardous materials for more than 30 days
- placement of non-native fill materials
Extracted standards
12 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Fencing & walls
- Fence orientation relative to waterway
Fences shall be installed parallel to a waterway. When a fence crosses a waterway, it shall be designed as a drop-down fence or a suspended cable fence.
Floodplain
- Anchoring required
New construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement.
- Critical facilities require varianceVariancePermission to depart from a specific dimensional rule, granted on a showing of hardship.
No zoning permit shall be administratively issued for any proposed critical facilities within any SFHA. Construction or operation of critical facilities within a SFHA requires a variance.
- Electrical equipment protection
Electrical, heating, ventilation, plumbing, air conditioning equipment and other service facilities shall be designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.
- Flood opening requirements
Provide a minimum of two openings on different sides of each enclosed area subject to flooding; total net area at least 1 square inch per square foot; bottom no higher than 1 foot above adjacent grade.
- Flood-resistant materials required
New construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage.
- Maximum accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. structure size600 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
Accessory structures in the Special Flood Hazard Area shall be limited to no more than 600 square feet in total floor area.
- Maximum hazardous materials storage duration30 days
No zoning permit shall be administratively issued for the storage of hazardous materials for any time period longer than 30 days within any SFHA.
- Minimum elevation above Base Flood Elevation1.5 ft
New construction or substantial improvement of any residential structure shall have the lowest floor, including basement, elevated 18 inches or more above the Base Flood Elevation.
- Non-native fillGrading (cut & fill)Reshaping land by removing earth (cut) or adding it (fill), often capped by volume. prohibitedProhibitedNot allowed in the district at all, short of rezoning or a variance.
No zoning permit shall be administratively issued for the placement of any non-native fill materials within any SFHA.
- Zoning permit required
All uses, activities, and development occurring within any floodplain district shall be undertaken only upon the issuance of a zoning permit.
- Water supply and sewage design
New and replacement water supply systems shall be designed to minimize or eliminate infiltration of flood waters into the system. New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of flood waters into the systems.
From the ordinance
These provisions shall apply to all lands within the jurisdiction of Nelson County and identified as being in the 100-year floodplain by the Federal Insurance Administration.