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Location: Maricopa County, Arizona
Client: Pulte Homes

Arroyo Norte

Arroyo Norte is a 157-acre residential master planned development located in unincorporated Maricopa County, north of the Anthem Community. Hoskin Ryan was responsible for all civil engineering design including grading and drainage, water and sewer, storm drain and stormwater management. Due to hillside and NAOS (Natural Area Open Space), this project required detailed attention to its grading design in order to adhere to Maricopa County Zoning requirements. In addition, the geologic constraints required gravity bleed-off selection in order to properly drain the site’s retention basins. All site drainage outlets to the existing Anthem Communities; therefore, Hoskin Ryan conducted hydrology analyses using HEC-1 to ensure the proposed development would not pose a negative impact on downstream communities. Hydraulic analysis using HEC-RAS was also conducted to ensure the encroachment into an existing natural wash within the site would not cause any significant change in water surface elevation and flow conditions.
Project Requirements / Unique Characteristics:

  • Stormwater Detention Analysis
  • NAOS/Hillside
  • Bank Protection Design
  • Retaining Wall Design