Grading & Drainage: Green Valley vs Sahuarita
How do grading & drainage rules compare between Green Valley, AZ and Sahuarita, AZ?
Sahuarita has fewer restrictions than Green Valley.
Green Valley, AZ
Pima County
Pima County requires grading permits for land disturbance in unincorporated areas and enforces strict drainage standards through the Regional Flood Control District. All new construction must demonstrate that post-development drainage does not increase runoff to adjacent properties. Washes and arroyos have mandatory setback buffers.
View full Green Valley rules →Sahuarita, AZ
Pima County
Sahuarita requires grading permits for cuts over 2 ft or 5,000+ sq ft disturbance. Pima County RFCD regulates floodplain development near washes and the Santa Cruz River.
View full Sahuarita rules →Key Facts Comparison
| Fact | Green Valley | Sahuarita |
|---|---|---|
| Permit Authority | Development Services | - |
| Drainage Review | RFCD Drainage Design Manual | - |
| Wash Setbacks | 25-100 ft by classification | - |
| Steep Slope Trigger | 15 percent grade | - |
| Retention | First inch on-site | First-flush capture required |
| Permit Trigger | - | 2+ ft cut/fill or 5,000+ sq ft |
| Floodplain | - | Pima County RFCD jurisdiction |
| Drainage Rule | - | No redirect onto neighbors |
| Rainwater | - | HB 2675 harvesting supported |
Highlighted rows indicate differences between cities.
Green Valley FAQ
Do I need a grading permit in unincorporated Pima County?
Yes. Any significant land disturbance requires a grading permit from Pima County Development Services. Projects near washes or in floodplains also need RFCD drainage review and possibly a floodplain use permit.
What are the wash setback requirements in Pima County?
Setbacks from washes range from 25 to 100 feet depending on the wash classification. Building within these setbacks requires a floodplain use permit and may be prohibited entirely in critical erosion hazard zones.
Can I redirect drainage on my property in Pima County?
You may not redirect drainage in a way that increases runoff to neighboring properties. Post-development drainage must match or improve predevelopment patterns, and the first inch of rainfall must be retained on-site.
Sahuarita FAQ
Do I need a grading permit for backyard landscaping in Sahuarita?
Minor landscaping that does not alter drainage patterns typically does not need a separate grading permit. Significant earthwork (over 2 feet deep or 5,000+ square feet) requires a permit.
Is my property in a flood zone?
Check with Pima County Regional Flood Control District or review FEMA flood maps. Properties near the Santa Cruz River or desert washes may be in regulatory floodplains requiring special permits for development.
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