Stormwater Runoff Modeling/Design

Expert stormwater runoff modeling and design services to manage flow, reduce flooding, and ensure regulatory compliance for sustainable land development.

At Master Plan Engineering and Consulting, we provide industry-leading Stormwater Runoff Modeling and Design services that are essential for sustainable site development, flood prevention, and environmental protection. Our team uses advanced modeling tools such as SWMM and HydraFlow to simulate stormwater behavior, evaluate drainage performance, and design efficient runoff management systems. We assess pre- and post-development runoff conditions to create tailored solutions—such as detention basins, infiltration systems, green infrastructure, and storm sewer networks—that effectively manage water volume, flow rate, and quality. Our designs comply with all local, state, and federal stormwater regulations while minimizing impacts to neighboring properties and ecosystems. Benefits of our Stormwater Runoff Modeling and Design services include: • Accurate prediction and control of runoff impacts from new developments • Compliance with NPDES, MS4, and local drainage regulations • Protection of property, infrastructure, and water quality • Integration of sustainable solutions like rain gardens and permeable surfaces • Reduced project delays with streamlined permitting and reporting Whether you’re developing residential, commercial, or industrial land, Master Plan Engineering and Consulting ensures your stormwater systems are intelligently designed, environmentally responsible, and built for long-term performance.

Reviews

Take a look at what your neighbors are saying about us.

If you want quality and great customer service this is who you want to use.
Brandon Dowell
Worked with Joe for about 7 months during a new construction residential project in Townsend, Delaware. Joe would always respond quickly and really cares about the clients he works with. During the project we had some issues with a subcontractor and Joe made sure the situation was resolved properly. He is very honest and a pleasure to work with.
Jesse
Joe is amazing. Another well known Engineer had me running on a treadmill for over 3 months with a project, Joe got things straightened out in 3 days. He is the man!
Matthew Minor
Joe was an absolute pleasure to work with. He went above and beyond to not only help but gave valuable insights that drove decisions and pushed my project forward. Look no further if you want a professional, smart and helpful engineer.
Keith Tartaglione
Joe was an absolute pleasure to work with. He went above and beyond to not only help but gave valuable insights that drove decisions and pushed my project forward. Look no further if you want a professional, smart and helpful engineer.
A Google User
I was recently in a bind with a building project at my home. I contacted Joseph with Master Plan Engineering and Consulting and he was very knowledgeable and was quick to help. I was so impressed with how easy it was to get in contact with him and the work performed that I asked him to step in and help with the remainder of my project. I would highly recommend Master Plan Engineering and Consulting to anyone if they are need of this scope of work.
Daniel Goodard
I recently worked with Joseph from Master Plan Engineering and Consulting on a pool design project requiring New Castle County permitting. Their team conducted a thorough site assessment and survey, analyzed grading, drainage, and structural factors, and delivered a cohesive design that integrated with our landscape and utilities. The calculations and drawings showed strong technical rigor, and risk mitigation was proactive. Communication was timely and clear, with smooth coordination among contractors and authorities. Timelines and budget were respected, and refinements were efficiently handled. I highly recommend Master Plan Engineering and Consulting for civil engineering services beyond pool design. This recommendation reflects Joseph’s expertise and my 40+ years in engineering and construction.
Morris Thompson
Great to work with. Mr. Marvasi was very thorough in everything we needed. Josh Dempsey Fire Chief Cheswold Fire Co
Joshua Dempsey
Joseph was great to work with! He was very informative as I was a homeowner acting as the contractor trying to get a permit. He helped me understand what it is the county was asking me for and helped me every step of the way on his pieces. It was a rush request and he handled it amazing!!! I definitely recommend this company for your planning needs!
Victoria Lanouette
Joe was extremely helpful and communicative in assisting us with our civil engineering needs. Very responsive and down to earth when problem solving, left us feeling we made the best choice possible when working with him. Hard to find level headed people these days and would greatly refer him to anyone needing his expertise. Thanks for all the help, Joe!
Michael Chelstowski
Joe was very helpful with my project. His expertise in land development was instrumental in getting permits, making drawings, and providing professional judgment for my project. His work ethic was super impressive and was upfront and very informative when explaining the status of the project and his deliverables were on-time as well. I definitely recommend his professional service to anyone who is looking to get engineering work done.
Qasim M. Khawaja
Mr. Marvasi was very professional when I spoke to him over the phone. During the project, he was on-time will all project’s milestones. I was super impressed with his service, work ethic, and response time.
Mariia Gull
Joe has done great work with us by making the record plan process as painless as possible and to our convenience. He makes sure to keep us up to date with any information as it comes. I’m not all fluent with any of this but Joe takes the time and makes sure you understand what is going on. I highly recommend his services and know he’s a great guy for the job!
mannymanito17

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Stormwater Runoff Modeling/Design

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