Shasta County, CA Environmental Rules: Flood Elevation Requirements (2026)

050 sets the site development standards that apply to all uses in the F-2 (floodplain) combining district. " Nonresidential structures get an alternative path under subsection E: they may sit below base flood level only if the structure and its utilities, water supply and sewage disposal facilities are floodproofed to at least one foot above the base flood level, certified by a registered civil engineer or licensed architect as adequate to withstand flood depths, pressures, velocities, impact and uplift forces. 040), and the building official cannot issue the permit until the floodplain administrator confirms the design minimizes flood damage.

050 was met. 050(I) requires they be elevated on a permanent foundation so the lowest floor sits at or above the base flood elevation and be securely anchored. Recreational vehicles in flood zones A, A1-A30, AH and AE may only remain on a site fewer than 180 consecutive days unless they meet the full elevation and anchoring standards. 060 but the code itself calls them rare given the insurance and safety stakes, and requires written notice that a variance can raise flood insurance premiums to as much as $25 per $100 of coverage.