NCS provides comprehensive stormwater engineering, stormwater management, and drainage design services for municipal, utility, transportation, commercial, and private development projects across the United States. Our team develops practical and regulatory-compliant solutions that improve infrastructure resiliency, support sustainable development, and optimize long-term drainage system performance.

Using advanced engineering analysis and industry-standard modeling tools, we deliver reliable stormwater management solutions tailored to each project’s site conditions, permitting requirements, and operational goals.

Stormwater Management Services

Our stormwater engineering services include planning, analysis, and design for a wide range of drainage and conveyance systems:

• Stormwater collection and conveyance system design
  Site drainage analysis and drainage design
• Detention pond design and retention basin analysis
• Storm sewer design and hydraulic modeling
• Culvert and outfall design
• Grading and surface runoff analysis
• Erosion and sediment control planning
• Drainage impact studies and flood mitigation analysis
• Green infrastructure and Low Impact Development (LID) solutions
• Watershed and regional stormwater planning

Regulatory Compliance & Permitting

NCS supports clients through all phases of stormwater permitting, drainage review, and regulatory coordination.

Our experience includes:

• Municipal drainage criteria compliance
• FEMA floodplain coordination and permitting support
• Stormwater pollution prevention planning
• Site development drainage studies
• Agency coordination and permitting assistance
• Floodplain and stormwater compliance evaluations

We work closely with local agencies, municipalities, utility districts, and project stakeholders to help streamline project approvals and reduce permitting risks.

Modeling & Technical Capabilities

Our team utilizes industry-standard software and engineering tools to perform accurate and defensible stormwater analysis and hydraulic evaluations.

Capabilities include:

• HEC-HMS hydrologic modeling
• HEC-RAS hydraulic and floodplain modeling
• EPA SWMM modeling
• GIS-based watershed and drainage analysis
• Storm sewer system modeling
• Hydraulic capacity evaluations

Integrated Engineering Approach

Our stormwater engineers collaborate with civil, structural, utility, environmental, and electrical teams to deliver coordinated infrastructure solutions that are technically sound, cost-effective, and constructible.

By integrating stormwater management, utility infrastructure, grading, and hydraulic analysis early in design, we help clients reduce project risk and improve long-term system performance.