Erosion Control: Ewa Gentry vs Honolulu
How do erosion control rules compare between Ewa Gentry, HI and Honolulu, HI?
Honolulu has fewer restrictions than Ewa Gentry.
Ewa Gentry, HI
Honolulu County
ROH Sec. 18A-1.6 requires approved erosion and sediment control plans for Ewa Gentry land-disturbing activities that need building, grading, stockpiling, or trenching permits.
View full Ewa Gentry rules →Honolulu, HI
Honolulu County
The Honolulu Grading Ordinance (ROH chapter 14 article 13) requires permits and erosion controls for cuts, fills, and stockpiles, especially on Oahu's steep upland and coastal slopes.
View full Honolulu rules →Key Facts Comparison
| Fact | Ewa Gentry | Honolulu |
|---|---|---|
| - | - | |
| Local code | - | ROH Chapter 14 Article 13 |
| Permit trigger | - | Over 50 cubic yards |
| Slope trigger | - | Over 10 percent |
| Permit agency | - | Honolulu DPP |
| Common BMP | - | Silt fence and hydromulch |
Highlighted rows indicate differences between cities.
Ewa Gentry FAQ
Do I need an erosion plan to build a backyard addition?
If your project requires a building, grading, or trenching permit and disturbs land, Sec. 18A-1.6 requires an approved erosion and sediment control plan.
Who enforces the erosion control plan?
The Department of Planning and Permitting reviews plans and inspects sites, and can issue stop work orders or fines for non-compliance.
Honolulu FAQ
Do I need a permit to remove a small backyard slope?
Probably yes if it involves more than 50 cubic yards or a cut over five feet. Smaller landscaping projects often qualify for an exemption but still need erosion controls.
What are the rules during heavy rain?
Active grading must pause and exposed soil must be covered or stabilized. Inspectors can issue stop-work orders if best management practices fail during storms.
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