17-36 OTHER DEVELOPMENT.

All development, including manmade changes to improved or unimproved real estate for which specific provisions are not specified in these regulations or the building code, shall:

• a. Be located and constructed to minimize flood damage.

• b. Meet the limitations of Section 17-33.4 when located in a regulated floodway.

c. Be anchored to prevent flotation, collapse or lateral movement resulting from hydrostatic loads, including the effects of buoyancy, during conditions of the design flood.

• d. Be constructed of flood damage-resistant materials.

e. Have mechanical, plumbing, and electrical systems above the design flood elevation or meet the requirements of ASCE 24, except that minimum electric service required to address life safety and electric code requirements is permitted below the design flood elevation provided it conforms to the provisions of the electrical part of the building code for wet locations. (Ord. #256-2021, S2 (306-1))

Tanks that serve buildings shall comply with the requirements of the building code. Underground and aboveground tanks that serve other purposes shall be designed, constructed, installed and anchored in accordance with ASCE 24. (Ord. #256-2021, S2 (306-2))

Temporary structures shall be erected for a period of less than one hundred eighty (180) days and temporary storage of goods and materials shall be permitted for a period of less than one hundred eighty (180) days. Extensions may be granted in accordance with Section 17-14.5. In addition, the following apply:

a. Temporary structures shall be anchored to prevent flotation, collapse or lateral movement resulting from hydrostatic loads, including the effects of buoyancy, during conditions of the design flood. Fully enclosed temporary structures shall have flood openings that are in accordance with ASCE 24 to allow for the automatic entry and exit of flood waters.

The Clearlake Municipal Code is current through Ordinance 286-2026, passed April 2, 2026.

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17-36 Other Development | Clearlake Municipal Code

• b. Temporary stored materials shall not include hazardous materials.

• c. The requirements of Section 17-33.4, when located in floodways. (Ord. #256-2021, S2 (306-3))

Fences in floodways that have the potential to block the passage of floodwaters, such as stockade fences and wire mesh fences, shall meet the limitations of Section 17-33.4. (Ord. #256-2021, S2 (306-4))

Oil derricks located in flood hazard areas shall be designed in conformance with flood loads required by the building code. (Ord. #256-2021, S2 (306-5))

Retaining walls and sidewalks and driveways that involve placement of fill in floodways shall meet the limitations of Section 17-33.4 and the requirements for site grading in Chapter 18 of the building code. (Ord. #256-2021, S2 (306-6))

Roads and watercourse crossings that encroach into floodways or riverine waterways with base flood elevations where floodways have not been designated, including roads, bridges, culverts, low-water crossings and similar means for vehicles or pedestrians to travel from one (1) side of a watercourse to the other side shall meet the limitations of Section 17-33.4. Alteration of a watercourse that is part of work proposed for a road or watercourse crossing shall meet the requirements of Section 17-15.3(c). (Ord. #256-2021, S2 (306-7))

Above-ground swimming pools, on-ground swimming pools, and in-ground swimming pools that involve placement of fill in floodways shall meet the requirement of Section 17-33.4. (Ord. #256-2021, S2 (306-8))

The Clearlake Municipal Code is current through Ordinance 286-2026, passed April 2, 2026.

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17-36 Other Development | Clearlake Municipal Code

The Clearlake Municipal Code is current through Ordinance 286-2026, passed April 2, 2026.

Disclaimer: The City Clerk’s Office has the official version of the Clearlake Municipal Code. Users should contact the City Clerk’s Office for ordinances passed subsequent to the ordinance cited above.

City Website: www.clearlake.ca.us

Hosted by General Code.

The Clearlake Municipal Code is current through Ordinance 286-2026, passed April 2, 2026.

18-12 Specific Plan (SP) Combining Zone | Clearlake Municipal Code

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