Anaheim, CA Environmental Rules: Erosion Control (2026)
Key Facts
- Erosion device deadline
- Immediately upon slope completion (AMC 17.04.180.020)
- Applies regardless of permit
- Yes, per AMC 17.04.180.040
- Max unretained slope
- 1.5 horizontal to 1 vertical
- Hillside add-on
- Rye/blade grass before final inspection (AMC 17.06.141)
- Extra measures authority
- City Engineer (berms, terracing, cribbing) (AMC 17.06.170)
- Repair deadline for hazard
- 30 days, or sooner if imminent (AMC 17.06.150)
- Default penalty
- Up to $1,000 fine / 6 months jail (AMC 1.01.370)
Summary
Anaheim requires every cut or fill slope to be protected with an approved erosion control device, planting, jute mesh or straw matting immediately after grading is completed, under Municipal Code Section 17.04.180.020. The rule applies to all excavations and fills citywide, permit or not, and hillside lots carry an added rye-grass planting requirement under Section 17.06.141.
17.04.180 EXCAVATIONS — CUTS AND FILLS. .0101 No excavation shall be made with a face steeper in slope than one and one-half to one vertical, unless a retaining wall or other approved support is provided to support the face of the excavation or fill... .020 All slopes shall be protected immediately upon completion with an approved erosion control device, such as planting, or the placing of jute mesh or straw matting. ... .040 This section applies to all excavations and fills in the City of Anaheim, regardless of whether a permit is required by this chapter for such excavation, except that the test and reports specified by this section shall not be necessary in connection with excavations or fills for which no permit is required.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-28: Code: Supplement contains: Local legislation current through Ord. 6627, passed 8-11-2026 | Zoning: Local legislation current through Ord. 6627, passed 8-11-2026).
Full Breakdown
180, in the citywide grading chapter, sets the baseline slope and erosion standard for construction sites. 0101 limits cut and fill slope steepness to no more than one and one-half horizontal to one vertical unless a retaining wall or other approved support holds the face, and the City Engineer can require an even flatter slope if conditions demand it. 040 makes clear this obligation is not tied to permit status: the section "applies to all excavations and fills in the City of Anaheim, regardless of whether a permit is required by this chapter for such excavation," though the soil-compaction testing and reporting in the same section are excused for unpermitted work.
170 gives the City Engineer standing authority to order additional measures, including a flatter exposed slope, extra drainage facilities, erosion control measures, berms, terracing, compaction or cribbing, if ongoing work threatens to endanger property or a public way. 070, checking initial, rough and final grading stages before signing off on the work.
Violations & Fines
The City Engineer can halt work outright: Section 17.06.070.040 authorizes a written stop-work notice on any portion of a project done contrary to the grading chapter, with no further work allowed until the violation is corrected and written approval is obtained. Where an existing excavation or fill has already become a hazard, Section 17.06.150 gives the owner thirty calendar days to repair it after written notice, shorter if the danger is imminent. Beyond that, the citywide default penalty in Section 1.01.370 applies: a misdemeanor punishable by up to a $1,000 fine, up to six months in jail, or both, with each day of continuing violation a separate offense.
Frequently Asked Questions
What erosion control does Anaheim require after grading a lot?
Does the erosion control rule apply if I didn't need a grading permit?
Is there an extra erosion rule for hillside lots in Anaheim?
What happens if my slope erodes and damages a neighbor's property?
Sources & Official References
Other rules in Anaheim
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Erosion Control in Nearby Cities
How other cities in Orange County handle erosion control.