Permanent Software Ownership

Secure lifetime access to WWHM-SWMM with no recurring subscription fees.

Includes:

• Lifetime license

• Full software functionality

• Long-term usage rights

• Installation support

Best for organizations seeking stable, long-term software investment.

Features

CAHM has many features:

• US-EPA HSPF computational engine

• Includes long-term precipitation data for each selected County

• Includes new and improved elements

• Includes GIS Import and WDM Maintenance

• Improved charts for analysis

• Works with Windows XP, Vista, and Windows 7

CAHM is a custom version of WWHM4 with these differences:

• purchased for one county at a time.

• each county includes one or more precipitation gages to choose from.

• several PERLND Parameter files are included to choose from.

• is free to municipalities (see below).

• does not include the CAD Pond, SWMM or Hydraulic elements.

• does not include the LID Toolbox (at this time).

Requires Activation to unlock all features and edit project settings.

Free to Municipalities. See the instructions under "License Details" or send an email to support@clearcreeksolutions.com to receive a link to download the software

Stay Current. Stay Supported. Stay Productive.

Annual Product Support ensures your hydrology modeling tools continue running smoothly with priority technical assistance and ongoing updates.

What’s Included:

• Priority email support

• Software updates & improvements

• Compatibility updates

• Troubleshooting assistance

• License management help

Ideal For:

• Firms relying on continuous model production

• Agencies requiring uninterrupted workflows

• Users who want guaranteed response times

Protect your investment and eliminate downtime with dedicated annual support.

This live, instructor-led workshop provides a focused, hands-on introduction to Hydrological Simulation Program—FORTRAN (HSPF) for watershed modeling and analysis. Designed for engineers, planners, and technical professionals, the training covers core concepts, model setup, and practical workflows used in real-world applications.

Participants will learn how to build, run, and interpret HSPF models, including watershed configuration, time-series data integration, calibration approaches, and result evaluation. The session emphasizes practical use, with guided examples and opportunities for questions throughout.

The workshop is delivered remotely in a small-group setting to allow for interaction and discussion. Attendees are encouraged to follow along with their own systems and datasets where applicable.

What’s included:

• Live instruction with an experienced modeler

• Step-by-step walkthrough of HSPF workflows

• Practical modeling tips and common pitfalls

• Q&A and troubleshooting support

This one-day session is ideal for those new to HSPF or for users looking to strengthen their understanding and improve modeling efficiency.

Advanced WWHM Training for Regulatory & Design Applications

Learn how to confidently apply WWHM in real-world project scenarios.

Training Includes:

• Model setup & parameter selection

• Regulatory compliance applications

• Hydrologic analysis workflows

• Practical case studies

• Implementation best practices

Ideal for engineers working within WWHM-required jurisdictions.

On-Demand Technical Consultation

Get direct access to expert modeling assistance for your project challenges.

Includes:

• 5-hours of consultating

• Model troubleshooting

• Workflow optimization advice

• Implementation guidance

Flexible, expert-level support when you need it.

On-Demand Technical Consultation

Get direct access to expert modeling assistance for your project challenges.

Includes:

• 1-hour consultation session

• Model troubleshooting

• Workflow optimization advice

• Implementation guidance

Flexible, expert-level support when you need it.