Stormwater Drainage

Stormwater Drainage Design and Drafting Services

At Gsource, we turn your surveys, drainage studies, and site data into accurate, constructible stormwater management designs that improve flood resilience, water quality, and long-term system performance. With 16+ years of global civil engineering expertise, a 350+ multidisciplinary team, ISO-certified workflows, and a 99% client satisfaction rate, we deliver end-to-end stormwater design and drafting support, ensuring precision, regulatory compliance, and seamless coordination from planning to permitting to construction.

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Stormwater Drainage Design and Drafting Services

What Our Clients Achieve

faster delivery of approval-ready stormwater reports and designs

30% faster delivery of approval-ready stormwater reports and designs

variance in grading, sizing, and storage calculations

<2% variance in grading, sizing, and storage calculations

collaboration with drainage engineers across time zones

24/7 collaboration with drainage engineers across time zones

100% compliance with municipal, EPA/SUDS/MS4, and floodplain standards

100% compliance with municipal, EPA/SUDS/MS4, and floodplain standards

Up to 35% savings through optimized layouts and value-engineered systems

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Our Stormwater Drainage Design and Drafting Services

Stormwater engineering is critical for safe, resilient, and compliant urban development. We transform survey data, hydrology inputs, and site requirements into coordinated, permit-ready stormwater designs that manage runoff efficiently and reduce flood risk. From drainage layouts and hydraulic profiles to detention modeling and stormwater reports, we deliver fully integrated solutions that ensure performance, compliance, and constructability. Every package is aligned with municipal stormwater ordinances, environmental regulations, and real-world site conditions to support faster approvals and long-term system reliability.

Utility Infrastructure Design

Utility Infrastructure Design

Integrated planning and design of underground utilities ensuring constructability, regulatory compliance, and long-term system performance.

Water Infrastructure Design

Water Infrastructure Design

Design of reliable water systems supporting supply, treatment, transmission, and distribution across urban developments.

Pressure Pipe for Water System

Pressure Pipe for Water System

Design of pressurized gas pipelines meeting safety codes, pressure requirements, and operational reliability standards.

Pressure Pipe for Gas System

Pressure Pipe for Gas System

Design of pressurized gas pipelines meeting safety codes, pressure requirements, and operational reliability standards.

Pressure Pipe for Sewer System

Pressure Pipe for Sewer System

Design of force mains and pressurized sewer pipelines ensuring efficient wastewater conveyance and system resilience.

Water Distribution System Design

Water Distribution System Design

Network design ensuring balanced pressure, adequate flow, redundancy, and compliance with local utility standards.

Sewer System Design

Sewer System Design

Gravity-based wastewater collection systems designed for capacity, maintenance access, and long-term operational efficiency.

Sanitary Sewer and Storm Design

Sanitary Sewer and Storm Design

Integrated sanitary and storm drainage design to manage flows, prevent flooding, and meet regulatory requirements.

Digital Terrain Modeling

Digital Terrain Modeling

High-accuracy terrain models supporting drainage analysis, grading optimization, and infrastructure design decisions.

What Do Our Clients Say?

Their stormwater modeling and detention design reduced our review cycles by nearly 40%, securing approval on the first submission.

George Hay

Senior Civil Engineer

Their accuracy in grading and pipe sizing cut our redesign effort by 25% and kept the entire drainage package fully compliant.

Karen Travis

Project Manager

We received complete stormwater reports and profiles 30% faster than our internal benchmark, critical for our fast-track permit schedule.

Howard Hill

Development Director

Their coordinated drainage layouts and construction-ready drawings lowered our on-site conflicts by over 35%.

Samantha Lee

Construction Manager

Why Choose Us

Rigorous Quality Assurance

Rigorous Quality Assurance

Multiple QA checkpoints for accurate and submission-ready plans the first time.

Fast Turnarounds

Fast Turnarounds

High-precision deliverables, even on tight schedules.

Flexible Engagement Models

Flexible Engagement Models

Scale your team up or down based on project demand.

Secure and Confidential

Secure and Confidential

ISO 27001–certified workflows to safeguard your data and development strategy.

Standards-Driven Delivery

Standards-Driven Delivery

Every plan set aligned with local codes, regulations, and industry best practices.

Dedicated Project Teams

Dedicated Project Teams

A single, accountable team from kick-off to completion- no handoffs.

Transparent Pricing

Transparent Pricing

Clear scopes, fixed fees, zero surprises.

ISO-Certified Processes

ISO-Certified Processes

Workflows backed by globally recognized quality and security standards.

Tight permitting timelines?

Get accurate, compliant stormwater designs delivered fast.

Tight permitting timelines?

Our Workflow

1

Initial Consultation and Planning

We define project goals, drainage requirements, regulatory standards, timelines, and expected deliverables to establish a clear path for stormwater analysis and design.

2

Site Analysis and Data Collection

We evaluate existing terrain, hydrology, soil conditions, utilities, rainfall data, floodplain constraints, and watershed characteristics, along with all surveys and reports essential for accurate stormwater modeling.

3

H&H Modeling and Preliminary Design

We develop basin models, runoff calculations, flow estimates, and preliminary drainage layouts, covering inlets, pipes, channels, culverts, detention/retention sizing, and overland flow paths.

4

Final Design Development

We convert preliminary concepts into detailed, code-compliant drainage plans, profiles, and calculations, including pond design, storm sewer networks, grading adjustments, outlet structures, and required hydraulic reports for agency review.

5

Quality Control and Collaboration

Through multi-stage QA/QC checks and coordination with civil, utility, transportation, and site design teams, we resolve conflicts early and ensure full alignment across grading, utility, and roadway drawings.

6

Final Documentation and Delivery

We deliver complete, permit-ready stormwater drainage packages, including plans, profiles, hydraulic reports, quantity takeoffs, and support for agency comments and post-delivery revisions.

Why Stormwater Drainage Design and Drafting Services Matter

Why Stormwater Drainage Design and Drafting Services Matter
Effective stormwater management is the foundation of safe, resilient, and compliant development. It protects infrastructure, prevents flooding, ensures regulatory approval, and supports long-term site performance. Without coordinated stormwater design, projects face permit delays, undersized systems, grading conflicts, and costly construction rework. With professional stormwater drainage support, every element- grading, pipe networks, detention/retention systems, outlets, and overland flow paths- works together seamlessly. You get accurate modeling, compliant documentation, and a clear path from concept to approval.

Here’s why it matters:

  • Accurate H&H modeling prevents under-design, flooding, and system failures
  • Integrated grading and drainage layouts reduce conflicts with utilities and road networks
  • Code-compliant documentation shortens permitting by 20–35%
  • Optimized pond sizing and pipe design cut infrastructure costs by 20–30%
  • Detailed, coordinated plans improve contractor clarity and field execution
  • Early floodplain, watershed, and utility coordination minimizes change orders
  • 24/7 support helps teams meet tight submission timelines without compromising quality
From watershed modeling to final drainage plans, profiles, and hydraulic reports, we streamline your stormwater design process with precision, compliance, and cost-effective engineering, ensuring infrastructure that performs reliably today and into the future.

Book a free consultation

Get expert support to streamline your next project.

Free Initial Consultation

Free Initial Consultation - No Commitment Required

Secure and Confidential Project Information

Secure and Confidential Project Information

Years of AEC Expertise

16+ Years of AEC Expertise

Drawing Deliverables Daily

300+ Drawing Deliverables Daily

Industry Standards Compliance Guaranteed

Industry Standards Compliance Guaranteed

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FAQs

Our services include system design, drafting, compliance checks and long-term maintenance for efficient stormwater management in commercial properties.

You can schedule a free consultation by contacting us with your project details. Our team will assess your needs and provide a customized solution.

We offer you Utility and Water Infrastructure design, Pressure Pipe Design for Water, Gas and Sewer Systems, Water Distribution System Planning and Design and many other designs as per your requirements to enhance performance and ensure compliance with regulations.

We offer various solutions, including rain gardens, permeable pavements and retention ponds, specifically designed to manage stormwater for residential properties.

Residential, commercial and industrial properties all benefit from effective stormwater drainage design to prevent water accumulation and associated damages.

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USA (Corporate Address)

UAE

Pune

Mumbai