Stormwater and Flood Management
Stormwater engineering services for drainage, detention and floodplain solutions that keep water where it belongs: on the site plan and off the property.
120+ Cumulative Years
120+ cumulative years of engineering experience
30+ Years of Solutions
Delivering tailored solutions to clients across the Southeast for more than 30 years
Licensed in Eight States
Licensed engineers and geologists in Alabama, Arkansas, Florida, Georgia, Mississippi, Tennessee, Illinois and Pennsylvania
Full-Service Approach to
STORMWATER and FLOODPLAIN MANAGEMENT
Every site, roadway and facility must deal with where rainwater moves. McFadden Engineering designs the grading, detention and conveyance systems that manage stormwater on a property and models the floodplain conditions that determine what can be built and where. No matter the issue, a new development’s permit requirements, a facility’s history of flooding or a municipality’s aging drainage system, the McFadden team starts with an honest model of how water moves across the site, not a rule-of-thumb pond size.
QUESTIONS CLIENTS SHOULD CONSIDER
If any of these sound familiar, that’s exactly the kind of problem our engineering approach is built to solve.
SOLUTIONS-ORIENTED Engineering APPROACH
Stormwater and floodplain problems are ultimately hydrology problems, so we start by modeling how water moves across and around a site before we design anything to control it.
Step 1 – Assess
We evaluate the site’s drainage patterns, existing infrastructure, soils and any flooding history, and confirm the regulatory floodplain and detention/retention requirements that apply.
Step 2 – Model and Design
Using hydrologic and hydraulic modeling, we size detention/retention facilities, drainage conveyance and floodplain mitigation to the site’s actual runoff conditions rather than a generic assumption.
Step 3 – Permit
McFadden prepares and manages stormwater permitting, floodplain determinations and any FEMA map amendment or Letter of Map Revision the project requires.
Step 4 – Support Construction
Our engineers remain engaged through construction to confirm detention, drainage and floodplain mitigation are built to the approved design.
We design detention and retention facilities sized to actual pre- and post-development runoff volumes, not a standard pond template.
We design the grading and conveyance systems that move stormwater off a site correctly, coordinated with the site’s civil design.
We model floodplain conditions to determine development constraints and support the regulatory approvals a project needs to move forward.
For municipalities managing aging or undersized drainage systems, we evaluate capacity and design upgrades sized to current storm event standards.
We design detention and retention facilities sized to actual pre- and post-development runoff volumes, not a standard pond template.
For municipal and utility clients, McFadden brings engineering discipline to public water and wastewater infrastructure, from treatment plant upgrades to the permitting and compliance work municipal systems must maintain year over year.
For clients with small to medium flow wastewater systems, McFadden offers training, maintenance and full facility management, giving facilities without a dedicated operations team access to engineering-backed day-to-day support.
Using in-house lab equipment and modeling software, McFadden builds water quality and hydraulic models to evaluate a facility’s problem before committing to a design direction, reducing the risk of over- or under-sizing a solution.
MCFADDEN ENGINEERING
INDUSTRIES SERVED
Stormwater and floodplain requirements touch nearly every type of development. McFadden’s civil team has spent more than 30 years managing stormwater for municipalities and utilities.
Municipalities and Utilities
Aging drainage system upgrades and MS4 permitting compliance
Have a Stormwater or Flooding Problem to Solve?
Contact McFadden’s engineering team about your site’s drainage, detention or floodplain needs, from a single drainage complaint to a full municipal stormwater capacity upgrade.
Frequently Asked Questions
McFadden Engineering models the site’s actual pre- and post-development runoff rather than applying a standard pond template, so the facility is sized to the volume of water it needs to hold.
Yes. McFadden prepares and manages floodplain determinations, FEMA map amendments and Letters of Map Revision as part of the engineering process used to design the site’s drainage and detention systems.
Both. McFadden designs detention, drainage and floodplain solutions for private site development, and evaluates and upgrades municipal stormwater infrastructure, including support for MS4 permitting and compliance.