Drainage & Stormwater Engineering

Get Fast, Compliant Drainage Design for Your Next Development Project

Whether you’re preparing a stormwater quality plan, designing a detention pond, or responding to floodplain requirements, Lentz Engineering delivers code-compliant drainage and flood mitigation solutions backed by deep experience in Houston, Austin, and surrounding Texas jurisdictions.

What We Offer 

Our drainage and stormwater services include:

• Stormwater Management Plans (SWMP)

• Drainage Area Maps & Calculations

• Detention/Retention Pond Design

• Storm Sewer Design & Pipe Sizing

• Grading and Drainage Plans

• Stormwater Quality (SWQ) Permits (TCEQ, City of Houston)

• Floodplain Mitigation & No-Rise Certifications

• Erosion Control & Outfall Design

Why Choose Lentz Engineering?

Decades of Texas-Specific Experience
With over 35 years of delivering civil and drainage engineering services, we’ve partnered with municipalities, developers, and private clients across Houston, Austin, and beyond. From public infrastructure to private site plans, we bring deep knowledge of Texas codes and permitting processes.

Technical Precision You Can Trust
Our team leverages advanced hydrologic and hydraulic modeling tools—including HEC-RAS, HEC-HMS, and SWMM—to design efficient, code-compliant drainage and flood mitigation systems tailored to your site.

Proven Performance, Every Time
We’re known for reliable, innovative, and sustainable stormwater solutions that meet local and state regulations. Clients count on us to deliver results on time, within budget, and with zero surprises—from initial consultation to final sign-off.

Start With a Free Consultation
Take the first step toward a smoother approval process. Let’s review your site and scope together. We’ll evaluate your needs, develop a compliant drainage plan, and secure your stormwater permit or detention system—on time, on budget, and without the stress.

📞 (713) 839-8900 | 📧 info@lentzengineering.com | 📍7322 Southwest Fwy, Houston, TX