Outdoor Lighting in Colusa County, CA (2026)
2 rules for unincorporated Colusa County, California.
Verified from official government sources
Dark Sky Rules
Unincorporated Colusa County has an outdoor lighting standard in Section 44-3.30 of the Zoning Code aimed at reducing light trespass and glare and maintaining views of the night sky. It requires full shielding and downward direction of fixtures, energy-efficient lamps, and limits illumination to the minimum needed for safety; certain high-intensity and roof-mounted lighting is prohibited.
Colusa County outdoor lighting / dark sky rules
Light RestrictionsColusa County Code Sec. 44-3.30 (Outdoor Lighting)
This section establishes minimum requirements for outdoor lighting in order to reduce light trespass, reduce glare, improve and maintain views of the night sky, and to protect the health, property and well-being of Colusa County residents and visitors.
Light Trespass & Shielding
Unincorporated Colusa County's Zoning Code controls light trespass through Section 44-3.30.010, which requires all outdoor lighting to be located, shielded, and directed so that no direct light falls outside the property line or into the public right-of-way. Fixtures must be fully shielded and aimed downward and away from adjoining properties.
Colusa County light trespass rules
Light RestrictionsColusa County Code Sec. 44-3.30.010(A)
Nuisance Prevention. All outdoor lighting shall be located, adequately shielded, and directed such that no direct light falls outside the property line, or into the public right-of-way as illustrated in Figure 44-3.30-1 (Light Trespass).
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