Environmental Rules in Highland, CA (2026)
4 verified environmental rules for Highland, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
In the City of Highland, California, Chapter 13.04 of the Highland Municipal Code bans discharging anything other than stormwater into the city storm drain system, or into any street or ditch leading to a public storm drain, unless an NPDES permit or city permit allows it. Section 13.04.090 also bars leaving refuse or pollutants on sidewalks, alleys and lots.
Highland Storm Drain and Stormwater Discharge Rules
Significant RestrictionsHighland Municipal Code § 13.04.090
It is prohibited to: A. Discharge directly or indirectly into the city storm drain system any nonstormwater or other solid, liquid or gaseous matter in violation of any law, rule, regulations, permit, order or other requirement of any federal, state, county, municipal or other governmental entity or agency. B. Discharge nonstormwater directly or indirectly to the storm drain system or any stree...
Erosion Control
In the City of Highland, California, land clearing and grading need an approved soil erosion and sediment control plan before building or grading permits issue. Runoff controls must handle a 10-year storm, and protection must be in place between October 15th and April 15th. The building official enforces and inspects.
Highland CA Erosion and Sediment Control Rules
Significant RestrictionsHighland Municipal Code § 16.64.070
C. General Provisions. ... 1. No person shall cause or allow the continued existence of a condition on any site that is causing or is likely to cause accelerated erosion as determined by the building official. ... 2. A soil erosion and sediment control plan ... shall be submitted and approved in accordance with the provisions of this section prior to the issuance of building permits, soil erosi...
Defensible Space
In the City of Highland, California, a permanent fuel modification area at least 100 feet wide, measured from the development perimeter, is required around development projects adjacent or exposed to hazardous fire areas. Firewood and other flammable materials must sit at least 30 feet from structures or be wholly enclosed, under Highland Municipal Code § 16.40.450.
Defensible Space and Fuel Modification in Highland, CA
Significant RestrictionsHighland Municipal Code § 16.40.450
B. Project Development Requirements. ... ... 7. All areas used for the storage of firewood or other flammable materials shall either be at least 30 feet away from all structures or wholly enclosed within a structure. ... ... D. Wildland-Urban Interface, Fuel Modification Areas. 1. A permanent fuel modification area is required around development projects or portions thereof that are adjacent or...
Flood Elevation Requirements
In the City of Highland, California, new residential construction and substantial improvements in a special flood hazard area must have the lowest floor, including basement, elevated one foot above base flood elevation in AE and A1 to A30 Zones, and two feet above in an unnumbered A Zone. A certified elevation is required at completion.
Highland CA Base Flood Elevation Requirements
Significant RestrictionsHighland Municipal Code § 16.76.050
A. Standards of Construction. In all areas of special flood hazard, the following standards are required: ... ... 3. Elevation and Floodproofing. a. Residential Construction. All new construction or substantial improvements of residential structures shall have the lowest floor, including basement: i. In AE and A1–A30 Zones, elevated one foot above the base flood elevation. ii. In an A Zone, wit...
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County ordinances apply to unincorporated areas and may supplement Highland city rules.
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