Page 9 - PublicWorks-HA

FLOOD CONTROL
Our experienced design team utilizes the latest in hydrological modeling software and technology to provide the most efficient drainage design solutions for both regional and local facilities.
Overview
H&A has designed drainage facilities to serve watersheds that ranged from steep hillsides to flatlands and from natural to fully urbanized impermeable surfaces. Our in-house storm drain, sewer, and water design capabilities enable our facilities designs to fit seamlessly into proposed improvements. In addition, our storm drain staff works closely with our in-house grading and water quality experts to create cost effective solutions that meet all applicable drainage criteria.
KEY FACTORS
• Watershed evaluation and impacts of proposed development
• Hydraulic and hydrology calculations
• Pipes, box culverts and special structures
• LOMRs, CLOMRs for FEMA floodplain impacts
• Detention basins to reduce flow, pump stations and force mains
• Hydraulic structures to reduce velocity, divert flows and prevent damage
Drone View: C05 EGG - Wintersberg Channel Improvements, Huntington Beach, CA
Services
H&A offers the following drainage related services:
• Evaluation of watersheds and hydrology studies
• Modeling of existing and proposed storm drain systems
• Planning of runoff collection piping sizes and inlets
• Sizing of open channels and flood control facilities
• Configuration of erosion control improvements
• Design of drainage structures, pump station and force mains
• Coordination with contractors on temporary drainage facilities
• LOMRs, CLOMRs for FEMA floodplain impacts
Clients
H&A has prepared storm drain the following example clients:
• Orange County Flood Control District (OCFCD)
• San Bernardino County Flood Control District (SBCFCD)
• City of Corona
• City of Irvine
• City of Laguna Hills
• City of Hesperia
• San Manuel Band of Mission Indians (SMBMI)
Past Projects
Recent sample storm drain and treatment projects by H&A include:
• Master Plan of Drainage (Ontario) • Borrego Canyon Wash With
Multiple Structures (Irvine/ OCFCD)
• Railroad Canyon Road Widening Facility Relocations (Lake Elsinore)
• Tustin Ranch Road and Park Avenue Box Culvert (Tustin)
• Fullerton Creek With Multiple Structures (OCFCD)
• Great Park Backbone Drainage System (Irvine)
• Tustin Legacy Drainage Master Plan (Tustin)
• C05 East Garden Grove - Wintersberg Channel Improvements (OCFCD)
Infrastructure Implemented - Hunsaker & Associates Irvine, Inc.
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