Erosion Control: Fontana vs Hesperia
How do erosion control rules compare between Fontana, CA and Hesperia, CA?
Fontana and Hesperia have similar restriction levels.
Fontana, CA
San Bernardino County
Fontana requires erosion and sediment-control BMPs on graded sites. The California Construction General Permit and FMC grading code require silt fences and stabilized entrances during the Oct-Apr wet season.
View full Fontana rules →Hesperia, CA
San Bernardino County
Hesperia's SWMP requires Erosion and Sediment Control Plans (ESCPs) for construction sites, including single-family residences, to prevent sediment discharge into the Mojave River watershed. Projects disturbing one acre or more must enroll under the statewide Construction General Permit (Order 2022-0057-DWQ) via the State Water Board's SMARTS system and prepare a SWPPP signed by a Qualified SWPPP Developer. Standard BMPs include silt fences, fiber rolls, stabilized construction entrances, soil stockpile covers, and post-construction revegetation.
View full Hesperia rules →Key Facts Comparison
| Fact | Fontana | Hesperia |
|---|---|---|
| State Permit | Construction General Permit | - |
| Trigger | 1+ acre disturbed | - |
| Wet Season | Oct 1-Apr 30 | - |
| Grading Trigger | 50+ cubic yards | - |
| Daily Fine | Up to $500+ city | - |
| CGP trigger | - | ≥1 acre of soil disturbance (Order 2022-0057-DWQ) |
| Local rule | - | Hesperia SWMP — ESCP required even for single-family residential construction |
| Required roles | - | Qualified SWPPP Developer (QSD) + Qualified SWPPP Practitioner (QSP) |
| Receiving water | - | Mojave River watershed (Lahontan Region) |
Highlighted rows indicate differences between cities.
Fontana FAQ
Do I need erosion control for a small Fontana backyard project?
Small residential projects under 50 cubic yards typically do not need a grading permit, but you must still prevent sediment from entering the storm drain.
When is the rainy-season BMP period in Fontana?
October 1 through April 30. Active construction sites must have rain-ready BMPs deployed throughout this period.
Hesperia FAQ
Do I need a SWPPP for a 0.5-acre site in Hesperia?
No — the statewide Construction General Permit threshold is 1 acre of soil disturbance. However, Hesperia's SWMP requires an Erosion and Sediment Control Plan (ESCP) with BMPs (silt fences, stabilized entrance, sediment controls) for smaller sites, including single-family residential builds. Check with the Engineering Department.
What BMPs are typically required?
Stabilized construction entrance to prevent track-out, silt fence or fiber rolls along perimeter, soil stockpile covers, concrete washout containment, inlet protection for storm drains, and post-construction soil stabilization (revegetation, hydroseed, or rock cover) — per the city's SWMP construction handouts.
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