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  CHI offers professional engineering services for complex urban drainage and watershed related issues, to both government institutions and consulting engineers. Projects include model reviews, municipal drainage improvements, new technology development, expert testimony and other modeling applications. We also provide custom in-house software solutions and technical support for US EPA SWMM 4&5.
- Consulting Engineering
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- - Model Review Services
- Software Development
- - Custom Software Solutions
  - Adding Design Storms
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- Contact Us
  Discuss your project with our friendly knowledgable staff.
- Get Support
  Already a PCSWMM user? Contact technical support.
- EVALUATE PCSWMM
- Compare Features
- Download a Free Trial
  30-day trial software with step-by-step tutorial and hands on exercises.
- Print Literature
  View a print-ready PDF brochure on PCSWMM.
- Book a Free Lunch and Learn Webinar Session
  Learn about new stormwater modeling practices and the benefits of using PCSWMM. Live web sessions and software demonstrations hosted by professional engineers.
- Ask an Engineer
  Email our helpful engineering staff to find out about the application of PCSWMM in your project.
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Consulting Engineering

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