Tempe requires grading and drainage permits for projects that alter the natural grade of land. The city's engineering standards ensure proper stormwater management and prevent drainage problems to adjacent properties. Tempe participates in the Flood Control District of Maricopa County programs. Development must retain stormwater on-site for certain storm events.
Grading and drainage in Tempe are regulated through the city's engineering standards and building code. A grading permit is required for projects that alter the natural grade of land, including cuts, fills, and pad grading for construction. The city requires drainage reports and plans for significant development projects. Stormwater must be managed to prevent increased runoff to adjacent properties. Tempe participates in the Flood Control District of Maricopa County's regional flood management programs. Development in or near FEMA-designated flood plains along the Salt River and Indian Bend Wash must comply with flood plain management regulations. The Indian Bend Wash Greenbelt, running north-south through Tempe, serves as a major flood control and recreation corridor. On-site stormwater retention is required for certain storm events to reduce downstream flooding. The city's Engineering department reviews drainage plans during the development process.
Grading without a permit or causing drainage problems to neighbors may result in stop-work orders, fines, and orders to restore proper drainage patterns.
Tempe, AZ
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Side-by-side rule comparisons with other cities in Maricopa County.
See how other cities in Maricopa County handle grading & drainage.
See how Tempe's grading & drainage rules stack up against other locations.
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