Environmental Rules in Shasta County, CA (2026)
4 county-level rules, plus city-specific rules for 1 city in Shasta County, California.
Verified from official government sources
Stormwater Management
Shasta County Code Section 18.10.090 makes it unlawful to discharge any pollutant, any non-storm water, or any storm water violating a permit limit into the county's storm drains, ditches, or channels that feed local creeks and rivers. The Resource Management and Public Works departments enforce the ban under the county's federal Clean Water Act permit, with cease-and-desist power for immediate threats.
Shasta County Storm Water Discharge Rules
Some RestrictionsShasta County Code Section 18.10.090
It shall be unlawful for any person to discharge, or cause to be discharged to the county storm water conveyance system or to receiving waters: A.Any pollutant;B.Any non-storm water discharge, except as provided in Section 18.10.100;C.Any storm water discharge which results in, or contributes to a violation of a receiving water limitation or a violation of an NPDES permit.
Erosion Control
Shasta County Code Section 18.10.190 requires anyone who owns or operates a construction site inside the county's MS4 permit area to install best management practices controlling pollutant discharge to the storm system, matching the state's Construction General Permit and the MS4 permit's Construction Site Storm Water Runoff Control Program to the maximum extent practicable.
Shasta County Construction Site Erosion Rules
Some RestrictionsShasta County Code Section 18.10.190(A)
Any person owning or operating a construction site within an MS4 permit area shall implement BMPs to control the discharge of pollutants to the county storm water conveyance system or receiving waters to the MEP in compliance with Section E.10, "Construction Site Storm Water Runoff Control Program," of the MS4 permit, the construction general permit and applicable county requirements.
Flood Zones
Any construction inside Shasta County's Restrictive Flood (F-2) District has to be anchored against flotation, collapse, and lateral movement, and Code Section 17.70.050 sets a hard elevation floor: the lowest floor of every residential structure, including the basement, must sit at least one foot above the base flood level shown on the county's FEMA-adopted flood maps.
Shasta County Restrictive Flood District Rules
Some RestrictionsShasta County Code Section 17.70.050(A), (D)
Notwithstanding the provisions of Sections 17.70.020, 17.70.030 and 17.70.040, all uses are subject to the following conditions and restrictions: A. Every structure shall be designed and anchored to prevent flotation, collapse or lateral movement of the structure, or portions of it, due to flooding. ... D. The lowest floor, including the basement, of all residential structures or substantial im...
Flood Elevation Requirements
In Shasta County's F-2 floodplain combining district, new residential structures and substantial improvements must sit at least one foot above the base flood level. The Resource Management Department's floodplain administrator enforces the standard through building permit review and elevation certificates.
Shasta County Base Flood Elevation Freeboard
Some RestrictionsShasta County Code Section 17.70.050(D)-(E)
D.The lowest floor, including the basement, of all residential structures or substantial improvements to existing residential structures shall be constructed at least one foot above the base flood level.E.The lowest floor, including the basement, of all nonresidential structures, or substantial improvements to existing nonresidential structures may be below the base flood level, provided the st...
Environmental Rules by City in Shasta County
1 cities in Shasta County have their own environmental rules rules. Each link goes to that city's dedicated page with code citations.
All Shasta County ordinances
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