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Title III›Division 1 — PLANNING›Part 2 — SPECIAL AREA COMBINING ZONES

21.1 F: FLOOD HAZARD AREAS

Humboldt County Zoning Code · 2026-07 edition · updated 2026-07-09 · Humboldt County

21.1.1 Purpose. The purpose of these regulations is to minimize public and private losses due to flood and tsunami conditions in specific areas of the County. (Former Section CZ#A314-59(A))

21.1.2 Applicability. These regulations shall apply to all areas designated “F” on the Zoning Maps and to all lands situated within the areas of special flood hazard as identified on the Federal Insurance Administration’s Federal Insurance Rate Maps (FIRM) for Humboldt County. As applicable, these regulations also apply to all lands located below the level of the 100-year tsunami run-up elevations described in Tsunami Predictions for the West Coast of the Continental United States (Technical Report H-78-26 by the Army Corps of Engineers). (Former Section CZ#A314-59(B))

21.1.3 Modifications Imposed by Flood Hazard Regulations. These regulations shall be in addition to the requirements imposed by the principal zones, development regulations, and other Special Area Combining Zone regulations. Wherever the provisions of these regulations conflict with or are inconsistent in application with any other regulations the most restrictive regulation shall apply. (Former Section CZ#A314-59(C))

21.1.4 Prohibited New Development within the 100-Year Floodway and Flood Plain.

New development

within the 100-year floodway and flood plain shall be restricted as follows: (Former Section CZ#A314-59(D))

  • 21.1.4.1 Within designated floodways the following is prohibited: (Former Section CZ#A314-59(D)(1))

    • 21.1.4.1.1 Residential Use Type:

Manufactured Home Parks

The Humboldt County Code is current through Ordinance 2784, passed March 10, 2026.

Page 160 of 1183

Title III Land Use and Development | Humboldt County Code

21.1.4.1.2 Within both designated floodways and flood plains the following use types are prohibited: (Former Section CZ#A314-59(D)(2))

21.1.4.2.1 Civic Use Types:

Essential Services

Health Care Services

Extensive Impact Civic Use

Solid Waste Disposal

21.1.4.2.2 Industrial Use Type:

Hazardous Industrial

21.1.5 Permitted Development in Tsunami Run-up Areas. New development below the level of the 100-year tsunami run-up elevation shall be limited to public access, boating, and public recreation facilities, agriculture, wildlife management, habitat restoration, ocean outtakes and infalls, pipelines, and dredge spoils disposal. (Former Section CZ#A314-59(E))

Note: Any development must also conform with the County flood hazard regulations in Title III, Division 3, Chapter 5 of the Humboldt County Code.313-22

313-22 “G” Combining Zone Designations

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▸ Contents — Humboldt County Zoning Code
Humboldt County Zoning Code
  1. ▸ Title III
    Overview
    1. ▸ Division 1 — PLANNING
      Overview
      1. Chapter 2 — ADMINISTRATION, PROCEDURES, AMENDMENTS AND ENFORCE…
      2. Chapter 1
      3. Chapter 2
      4. Chapter 3
      5. Part 1 — PRINCIPAL ZONES
      6. ▸ Part 2 — SPECIAL AREA COMBINING ZONES
        Overview
        1. 15.1 PURPOSE
        2. 15.2 APPLICABILITY
        3. 15.3 SPECIAL AREA COMBINING ZONES AND RESPECTIVE DESIGNATIONS
        4. 15.4 REPRESENTATION OF THE SPECIAL AREA COMBINING ZONES REGULA…
        5. 16.1 A: ARCHAEOLOGICAL RESOURCE AREA OUTSIDE SHELTER COVE
        6. 16.2 A: SPECIAL ARCHAEOLOGICAL RESOURCE AREA REGULATIONS FOR S…
        7. 16.3 AP: AIRPORT SAFETY REVIEW
        8. 18.1 C: COASTAL RESOURCE DEPENDENT
        9. 19.1 D: DESIGN REVIEW
        10. 20.1 E: COASTAL ELK HABITAT
        11. 21.1 F: FLOOD HAZARD AREAS
        12. 22.1 G: ALQUIST-PRIOLO FAULT HAZARD
        13. 28.1 M: MANUFACTURED HOMES
        14. 29.1 N: NOISE IMPACT
        15. 30.1 O: OFFSHORE ROCKS AND ROCKY INTERTIDAL AREAS
        16. 31.1 P: PLANNED UNIT DEVELOPMENT
        17. 32.1 Q: QUALIFIED
        18. 33.1 R: STREAMS AND RIPARIAN CORRIDORS PROTECTION
        19. 34.1 S: DEVELOPMENT STANDARD COMBINING ZONE REGULATIONS
        20. 34.2 SM: MODIFIED BUILDING STANDARDS INCLUDING PROVISION FOR M…
        21. 34.3 SX: DEVELOPMENT STANDARDS WHICH ARE COMBINED WITH A PROHI…
        22. 34.4 SY: DEVELOPMENT STANDARDS WHERE STANDARDS IN ADDITION TO …
        23. 34.5 STMP: SAMOA TOWN PLAN STANDARDS
        24. 35.1 T: TRANSITIONAL AGRICULTURAL LANDS
        25. 38.1 W: COASTAL WETLAND AREAS
        26. 39.1 X: NO FURTHER SUBDIVISION ALLOWED
        27. 40.1 Y: SPECIFIED MINIMUM AND AVERAGE LOT SIZES
      7. Part 1 — USES AND ACTIVITIES
      8. Part 2 — STRUCTURES AND FACILITIES
      9. Part 3 — DEVELOPMENT STANDARDS
      10. Part 4 — REGULATIONS THAT APPLY IN SENSITIVE HABITATS AND HAZA…
      11. Part 5 — NONCONFORMING USES AND STRUCTURES
      12. Part 1 — CLASSIFICATION OF USE TYPES
      13. Part 2 — GLOSSARY OF USE TYPES
      14. Part 1 — PRINCIPAL ZONES
      15. Part 2 — REGULATIONS FOR THE COMBINING ZONES
      16. Part 1 — USES AND ACTIVITIES
      17. Part 2 — STRUCTURES AND FACILITIES
      18. Part 3 — DEVELOPMENT STANDARDS
      19. Part 4 — (SECTION RESERVED FOR FUTURE USE)
      20. Part 5 — NONCONFORMING USES AND STRUCTURES
      21. Part 1 — CLASSIFICATION OF USE TYPES
      22. Part 2 — GLOSSARY OF USE TYPES
  2. Title III — LAND USE AND DEVELOPMENT

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