Sec. 66-344(d), (e), (f), (g), (h)
Dimensional standards
Servicing
- Geographic extent
- Areas within the floodway as delineated on the Flood Insurance Rate Maps (FIRM) for the county
Uses
Permitted by right6
Conditional / special use3
Prohibited1
Extracted standards
11 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Floodplain
- No encroachment without proof of no flood level increase
No encroachment, including fill, new construction, substantial improvements or other development, are allowed in the floodway district unless it has been demonstrated through certified hydrologic and hydraulic analyses... that the proposed encroachment would not result in any increase in any flood levels during the occurrence of a base flood.
- No development increasing flood heights
No development shall be permitted which increases flood heights or produces hazardous velocities, unless the effect of such development on flood heights is offset by accompanying improvements...
Other
- Alteration of watercourses requires approvals
Prior to any proposed alteration or relocation of any channels, floodways or any watercourse... approval shall be obtained from the U.S. Corps of Engineers, Virginia Department of Environmental Quality, and the Virginia Marine Resources Commission.
- Anchoring of new construction
New construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement of the structure...
Manufactured homes shall be anchored to prevent flotation, collapse, or lateral movement.
- On-site waste disposal systems
On-site waste disposal systems shall be located and constructed to avoid impairment to them or contamination during flooding.
- Site plan information required
All applications for development within any floodplain district... shall incorporate: the elevation of the base flood at the site, the elevation of the lowest floor, etc.
- Preservation of drainageways
Under no circumstances shall any use, activity or development adversely affect the capacity of the channels or floodways of any watercourse, drainage ditch or any other drainage facility or system.
- Recreational vehicle requirements
Recreational vehicles shall either (i) be on the site for fewer than 180 consecutive days, be fully licensed and ready for highway use, or (ii) meet the permit requirements for placement and the elevation and anchoring requirements for mobile/manufactured housing...
- Utilities designed to prevent water entry
Utilities and mechanical devices and equipments and other service facilities shall be designed or located as to prevent water from entering or accumulating within the components during flooding.
- Water supply and sewerage design
New and replacement water supply and sanitary sewerage shall be designed to minimize or eliminate infiltration of floodwaters into the systems and prevent discharges from the system into floodwaters.
From the ordinance
Only the following uses shall be permitted and allowed in the floodway district: agricultural uses... No encroachment... are allowed in the floodway district unless it has been demonstrated...