Denver, Colorado
Thursday, October 10, 2019
Thursday, October 10, 2019 8:30 AM -
Friday, October 11, 2019 5:00 PM (Mountain Time)

Urban Drainage & Flood Control District
2480 W. 26th Ave. Suite 156-B
Denver, Colorado 80211
United States

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When:  See above. 
Where:  See above

General registration fee for this two-day class is $835.00.
        Early registration fee of $755.00 is available until September 13th
Discounted CASFM-RMAPWA member fee is $765.00. 
        Early registration fee of $725.00 is available until September 13th
The low general registration fee and the discounted CASFM-RMAPWA fee is available because of sponsorship, in part, by the Urban Drainage & Flood Control District.

 You will be eligible to receive 1.5 CEU’s or 15 PDH’s for this course.
       You will receive 12 ASFPM Core CEC’s toward CFM certification.  

What You Will Learn:    
The Colorado Urban Hydrograph Procedure (CUHP) is a unit hydrograph-based program that was calibrated to urban rainfall-runoff data in the semi-arid hydrologic region of eastern Colorado.  It has been used since the late 1970s and was re-calibrated in 2016 using more recent rainfall-runoff monitoring data.  It has been extensively tested and produces reasonably accurate results in transforming rainfall to surface runoff.  The CUHP software has been updated and modified over the years and in its current Excel-based form provides considerable flexibility to the user.  In this class you will learn about CUHP’s Excel-based software, it’s evolution, and how to use the latest version to generate CUHP output hydrographs.  
The EPA Storm Water Management Model (SWMM) is a rainfall-runoff-routing simulation model used for single event or long-term (continuous) simulation of runoff quantity and quality from primarily urban areas. The routing portion of SWMM transports runoff through a system of pipes, channels, storage/treatment devices, etc.  SWMM tracks the flow rate, flow depth, and quality of water in each pipe and channel during a simulation period.  In this class you will learn about the SWMM user interface, how to develop simple routing networks, and how to import the CUHP-generated hydrographs for hydraulic routing through the stormwater conveyance system. 
After learning the basics of each model, the user will then learn how the CUHP interface can be used to run both models simultaneously without having to open individual SWMM files.  This feature allows the user to run various design storms and land use condition scenarios in a batch mode configuration without the need to repetitively run each modelling scenario separately, thereby saving the user a considerable amount of time and avoiding potential errors.
You will learn how to use both the CUHP and EPA SWMM software in a workshop format with various example watersheds.  In addition, you will learn several modeling tips including CUHP runoff calibration techniques (Cp and Ct), SWMM routing calibration techniques (slope, roughness, cross-section), and how to efficiently work on small development sites within a larger existing watershed model and how to test the localized impacts on the downstream watershed.

Bring your own laptop.  Obtain copies the latest version of CUHP 2.0 and EPA SWMM 5.1 (links available at and install them on your computer before coming to class.  It is critical that you do that if you are bringing your organization's computer since your IT departments will often not permit you to install software without their permission.

Derek Rapp, P.E., CFM, is the president of Peak Stormwater Engineering, LLC, and specializes in hydrologic and hydraulic modeling and software development.  He has over 15 years of consulting experience and is versed in many technical modeling platforms. He brings extensive practical experience and expertise related to the use of hydrologic modelling and the planning of complex stormwater systems.  He has worked closely over the years with UDFCD to update and modify many of their software programs to keep pace with current technology and updated hydrologic and hydraulic criteria.  He recently reprogrammed the CUHP software code to allow it to run exclusively in an Excel spreadsheet and incorporated a direct code link with EPA SWMM to allow the two programs to run simultaneously from the Excel interface.  
Teresa Patterson, P.E., CFM, is a Watershed Manager at the Urban Drainage and Flood Control District, serving the Denver Metropolitan area.  She has more than 15 years of consulting and public sector experience in planning and design of major stormwater infrastructure.  She has extensive experience of creating and reviewing CUHP and SWMM hydrologic models generated for watershed and development master plans, and floodplain update studies.  Ms. Patterson specializes in complex hydrologic models, applying area correction for large watersheds, and troubleshooting model instabilities.

Colorado is a great place to visit!
October is a beautiful time to visit Colorado.  The weather in Colorado during the month of October can be unpredictable, but enjoying our beautiful state doesn't have to be!  Enjoy apple picking at YA YA Farm & Orchard in Longmont, Colorado which is about an hour drive from Denver.  If you would like to stay close to the city, you can visit The Urban Farm at Stapleton which provides a fun family outing where you can hang out with sheep, chickens, and more as well as learn more about their plants and community garden. If you're looking for a mixture of mountains and relaxation, enjoy a beautiful drive to the Strawberry Park Hot Springs in Steamboat or the Hot Springs in Glenwood Springs.  If you would rather stay close to or in the city of Denver, Larimer Square has several fun boutiques for you (and even your pets)!  When you're ready for a break, there are a variety of delicious cafés and restaurants to choose from!  And for all you football fans, the Denver Broncos play the Tennessee Titans at Mile High Stadium Sunday afternoon on October 13th.  So, if you come and attend this class, you may want to extend your stay (or even come early) and take advantage of the most attractive area of the United States.

The size of the classroom will be limited to approximately 30 students.  To assure a space for yourself we suggest registering early by clicking on the "Register Now" button above

For more information, call us at 303-728-4449 and ask for Ben, or e-mail him at


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