Stormwater management, collection and conveyance

Rocks in a ditch are surrounded by green grass and a fence on one side — City of Springfield sewer garage stormwater capture and reuse project, Springfield, Illinois

Sustaining our natural and built environments is a paramount concern for you, and we hear you. Using our experience with the latest modeling techniques, efficient design and policy formation, we assist federal, state and local organizations and private entities in navigating every phase of drainage, stormwater management and flood risk reduction projects.

As you face increasing regulatory pressures, budgetary constraints and ever-evolving modeling and design tools, you can depend on us to create adaptive and integrated stormwater management designs and solutions. Our team has the knowledge and experience to understand your project’s nuances and support you through a successful outcome. We integrate environmental stewardship, technical specialization and superior service to provide scalable, innovative and comprehensive solutions.

Photo of a retention pond with a covered manhole on a concrete slab in the foreground and rows of parked cars in a parking lot behind a fence to the right — BNSF Orillia Auto Yard expansion, Renton, Washington

Our water quality and environmental considerations include several factors, such as treating stormwater as close to the source as possible to reduce the need for extensive conveyance infrastructure, incorporating low-impact development and green infrastructure techniques to manage runoff, using natural elements and constructed facilities to sustainably manage stormwater and monitoring outfalls so they don’t negatively affect receiving waters. We also provide regular maintenance so your system functions correctly and efficiently.

Through our water resources, transportation and sitework projects, we design sustainable stormwater collection and conveyance systems and identify environmentally friendly solutions.

Design and planning

hydrological analysis
existing and proposed capacity
system upgrade design
watershed management and stormwater master plans
National Pollutant Discharge Elimination System and compliance

Components

collection: inlets, catch basins and drains that capture stormwater
conveyance: pipes, culverts and channels to transport water to an outfall, pond or infiltration areas
dams: breach analysis, operations and maintenance plans and emergency action plans
bridges: hydraulic modeling tools and methods and scour analysis

Nonerosive flow

hydraulic models that analyze the velocity and shear force impacts to the system and infrastructure
system designs that convey water, preventing erosion and damage to the infrastructure