Hydrology & Hydraulics

NCS provides comprehensive hydrology and hydraulics engineering services to support infrastructure planning, design, and regulatory compliance across the United States. Our team evaluates how water moves through watersheds, drainage systems, and conveyance infrastructure to deliver reliable, data-driven solutions.

We combine advanced hydrologic and hydraulic modeling, industry-standard tools, and practical design experience to help clients manage stormwater, reduce flood risk, and optimize system performance for both public and private projects.

Hydrology Services

Our hydrology services focus on understanding rainfall, runoff, and watershed behavior to develop accurate flow predictions and support effective stormwater management.

• Watershed delineation and hydrologic characterization
• Rainfall-runoff modeling (HEC-HMS and GIS-based analysis)
• Peak flow estimation and hydrograph development
• Stormwater master planning and drainage studies
• Detention and retention pond sizing and design criteria development
• Flood hydrology and regional watershed analysis
• Climate variability and resiliency considerations

Hydraulics Services

Our hydraulics engineering services evaluate and design systems that convey stormwater and surface water efficiently under a wide range of flow conditions.

• Open channel and closed conduit hydraulic analysis
• Storm drain system modeling and design
• Floodplain and floodway modeling (HEC-RAS 1D/2D)
• Bridge and culvert hydraulic design and analysis
• Energy dissipation and erosion control solutions
• Pump station hydraulics and system curve development
• Surface water conveyance and outfall design

Applications

Our hydrology and hydraulics capabilities support a wide range of projects nationwide:

• Municipal and utility infrastructure improvements
• Water and wastewater treatment facilities
• Land development and site drainage design
• Transportation and roadway drainage systems
• Regional watershed and flood control studies