Storm Sewer Design — ALFA Engineering
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Design Services

Storm Sewer Design

Professional storm sewer design and storm drain collection system engineering for residential, commercial, and municipal development projects across Texas. Our licensed civil engineers design storm drain inlets, manholes, underground pipe networks, and outfall structures that manage stormwater conveyance and meet local drainage criteria throughout the Houston metropolitan area.

Our Storm Sewer Design Services

Storm Drain Network Design

Design of underground storm sewer pipe networks including pipe sizing, slope, manhole placement, and hydraulic capacity analysis.

Storm Inlet Design

Design and placement of storm drain inlets including curb inlets, grate inlets, and combination inlets for efficient stormwater capture.

Storm Sewer Outfall Design

Design of storm sewer outfall structures including energy dissipation, erosion protection, and flap gates at discharge points.

Stormwater Conveyance Analysis

Hydraulic analysis of storm drain systems to verify pipe capacity, flow velocity, and inlet capture under design storm events.

Junction & Manhole Design

Design of storm sewer junction structures and manholes including flow line elevations, benching, and access requirements.

Storm Sewer Permitting

Preparation and submittal of storm sewer construction plans and permit applications to local municipalities and drainage districts.

Storm Sewer Relocation Design

Design of storm sewer line relocations for roadway, site development, and infrastructure projects.

Underground Detention Integration

Integration of underground stormwater detention systems with storm sewer networks for space-constrained sites.

Scope of Services

Storm Drain Network Design & Sizing
Storm Inlet Design & Placement
Storm Sewer Outfall Design
Stormwater Conveyance Analysis
Junction & Manhole Design
Storm Sewer Permitting
Storm Sewer Relocation Design
Underground Detention Integration

Service Areas

ALFA Engineering serves cities and counties across Texas.

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Related Tools & Official Resources

Verify requirements with the official government sources before your project — these verified resources and plain-English answers apply directly to this service.

Frequently Asked Questions