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Computational Methods in Stormwater Management

The topics presented in this short course represent a comprehensive array of hydrologic and hydraulic tools for stormwater management design, detention facility design, and subdivision planning. The Virginia Tech/Penn State Urban Hydrology Model (VT/PSUHM) will be used to illustrate how these tools can assist in the design of stormwater management facilities. Special emphasis will be placed on the fundamental calculations for detention facility design, particularly outlet structure design. The Multiple Stage Routing Model (MSRM) in the VT/PSUHM will be used to assist in understanding the design process. Additional emphasis will be placed on BMP design, particularly enhanced detention, enhanced extended detention, bio-retention cells and infiltration basins. Example analysis and design situations will be addressed and solved using the software. The participants will be guided through practice problems that deal with stormwater management design.

Participants will receive information that will help them navigate Pennsylvania’s Stormwater permitting process. Attendees will also be more knowledgeable about designing stormwater management practices to meet the Post-Construction Stormwater Management Requirements in Chapter 102 regulations.

Who Should Enroll

This course is intended for stormwater facility designers with previous exposure to urban runoff calculations involving NRCS (SCS) methods, channel and reservoir routing principles, and Rational methodologies. Because hands-on computer work is emphasized in the course, the fundamental concepts behind these methods will not be presented in great detail. However, specific details for each of the methods presented will be documented or referenced in the supplemental short-course notes. Each participant is encouraged to bring a hand calculator for occasional use.

Computer Requirements

Participants must bring a laptop computer to this short course. The user must have administrative rights to the computer so that the VTPSUHM software can be installed. A time for advanced software installation is provided on Wednesday evening, August 5, between 7:00 and 9:00 pm at the Holiday Inn Wilkes-Barre – East Mountain (room to be determined). Only Windows-based laptop computers using Windows XP, Windows Vista, or Windows 7 will be supported. Microsoft Excel 2003 or 2010 is also required. The laptops should have viewing screens from 14 to 17 inches. Apple computers, notebook computers, iPads and similar devices will not be supported. Laptops can be shared with a colleague if so desired. Each attendee will receive course handout materials that include a set of notes documenting standard stormwater computational methods, speaker presentation notes, and a copy of the VT/PSUHM version 8.1 program.

Location and Accommodations

The program will be held at the Holiday Inn Wilkes-Barre – East Mountain, 600 Wildflower Drive, Wilkes-Barre, PA 18702. A limited number of rooms have been set aside at the program location. Call or fax the Holiday Inn Wilkes-Barre – East Mountain to make your room reservation. Be sure to identify yourself as a participant in the Computational Methods in Stormwater Management short course. Please give the registration clerk the following reservation identification number: PSU.

Reservations should be made prior to 07/15/2015 to get the rates listed below:

Room Rates (for Single or Double)
Double/Doubles $ 99.00
Leisure Kings $ 99.00
Executive Kings $109
Parlor Suites $119.00
Presidential Suites $129.00

All rooms are subject to 11% tax. Check-in time is after 3:00 pm and check out is by 11:00 am on the day of departure. The hot breakfast buffet served in Wildflowers Restaurant is available for any registered guest.

To reserve your room or for additional information:
Phone: (570) 822-1011
Fax: (570) 822-2031
Website: http://www.hiwilkesbarre.com


By Air: The Scranton/Wilkes-Barre International Airport (AVP) is located ten miles from the Holiday Inn Wilkes-Barre-East Mountain. Holiday Inn Wilkes-Barre-East Mountain provides complimentary shuttle to and from the airport. Phone (877) 235-9287. Website: www.flyavp.com

By Car: Holiday Inn Wilkes-Barre-East Mountain is located within driving distance of many major cities, including Harrisburg (1.5 hrs, 105 mi.), Pittsburgh (4 5 hrs., 267 mi.), Philadelphia (1.8 hrs, 108 mi.), Baltimore (3.0 hrs, 185 mi.), Washington, D.C. (3.75 hrs, 221 mi.), New York City (2.25 hrs., 122 mi.), and Toronto (6.5 hrs., 373 mi).

Contact Us

About Program Content:

Thomas A. Seybert
Penn State Wilkes-Barre
P.O. Box PSU
Lehman, PA  18627
phone: 570-675-9139
email: tseybert@psu edu

About Logistics:

Karen Gallia, Conference Staff Assistant
Penn State Wilkes-Barre Continuing Education 
1264 Old Route 115
P.O. Box PSU
Lehman, PA  18627
phone: 570-675-9253
email: kag42@psu.edu

Professional Development Hours

The Commonwealth of Pennsylvania has recently enacted a law requiring Professional Engineers and Professional Land Surveyors licensed in Pennsylvania to complete 24 hours of continuing education during each two-year license renewal cycle as a condition of renewal. The Pennsylvania State Registration Board for Professional Engineers, Land Surveyors, and Geologists has developed and published a set of proposed rules to implement the provisions of the law. Participation in this program will award you 16 PDH units.

Continuing Education Units

Continuing Education Units (CEUs) are based upon a standard of 1 unit per 10 hours of classroom instruction. Upon completion of this program, each participant will be awarded a certificate for the CEUs earned during this program, for a maximum of 1.6 CEUs.

Registration Information

Registration deadline is July 3, 2015.
Early bird registration fee: $950 .00 (register by June 2, 2015)
Full registration fee: $999.00 per person (after June 2, 2015)
Registration fee after July 3, 2015: $1,049.00 (if space permits)   

Registration fees cover all instruction, course material, two continental breakfasts, and two lunches. Registrants are responsible for all other meals and lodging.

If this session is full, or if the registration deadline is over and you would still like to register, contact us at 570-675-9253 or email wbce@outreach.psu.edu.

How to Register

•    Online.

•    By email or fax. (Registration must be accompanied by your credit card information.)

email: nc_reg_office@psu.edu 
fax: 814-863-2765

•    By mail. Complete a registration form and mail with payment to:

Penn State Wilkes-Barre Continuing Education
P.O. Box 410
State College, PA  16804-0410

Call 570-675-9253 or email kag42@psu.edu to request a paper registration form. Payment in full must accompany your registration form. You may pay with a check or a credit card. Make check payable to Penn State University.


Penn State Wilkes-Barre will confirm your registration via email. You will be alerted promptly of any cancellations or changes. If some unforeseen event forces Penn State to cancel or postpone the program, you will receive a full refund of your registration fee; however, the University cannot be held responsible for any related costs, including cancellation fees assessed by airlines or travel agencies.

Refunds/Cancellation Policy

If your request to withdraw is received by July 3, 2015, we can issue a partial refund. Send your written request by fax to 570-675-8308 or by email to kag42@psu.edu. A $50 administrative fee will be charged for each withdrawal. Anyone who is registered but cannot attend may send a substitute.


Penn State encourages persons with disabilities to participate in its programs and activities. If you anticipate needing special accommodations or have questions about the physical access provided, please contact the conference staff assistant at 570-675-9253 at least two weeks prior to the program.



  • Curve number method
  • Travel-time calculations
  • Swale design
  • Design rainfall
  • SCS unit hydrograph method
  • Muskingum channel routing
  • SCS tabular hydrograph method



  • Detention pond routing
  • Detention storage estimates
  • Multiple-stage outlet design
  • Bio-retention cell design
  • Extended detention design
  • Enhanced extended detention design
  • Infiltration basin design


This schedule is subject to modification and change as the topics are presented. While reasonable efforts will be made to adhere to the advertised package, Penn State Wilkes-Barre reserves the right to substitute speakers and/or seminar content.

Proposed Schedule

Wednesday, August 5, 2015

7-9 pm — Tech support for software installation (Seybert/Smith/Hodges)

Thursday, August 6, 2015

8:00 am — Welcome and course overview (Seybert)

8:15 am  Curve numbers

9:00 am — Travel time and time of concentration (Seybert)

9:45 am  Practice Problem Part I (CN and Tc) (Hodges/Seybert/Smith)

10:15 am  Break

10:30 am  Design rainfall/storms (Smith) NRCS unit hydrograph (Seybert)

12 noon — Lunch

1:00 pm — Muskingum channel routing (Seybert)

1:15 pm  Practice Problem Part II (NRCS UH) (Hodges/Seybert/Smith) 

2:00 pm  Tabular hydrograph (Smith)

2:45 pm  Break

3:00 pm  Detention basin routing (Seybert)

3:15 pm  Detention basin design (Pro Basin Designer) (Hodges)

4:15 pm  Practice Problem Part Ill (Tab Hyd and PBD) (Hodges/Seybert/Smith)

5:00 pm  Adjourn

Friday, August 7, 2015

8:00 am — Hydrograph addition/plotting; Word/Excel data transfer (Hodges)

8:30 am — Rational hydrograph method for detention basin design (Smith)

9:15 am — Subsurface detention and recharge pits (Smith)

9:45 am — Break

10:00 am — PA BMP Manual/Chapter 102 (Rocco)

12 noon — Lunch

1:00 pm  Extended detention basin design (Hodges)

2:00 pm  Enhanced extended detention basin design (Hodges)

2:15 pm  Bio-retention cell design (Hodges)

3:00 pm  Break

3:15 pm  Practice Problem Part IV (EDB/Bio Cell) (Hodges/Seybert/Smith)

4:00 pm  Infiltration basin w/ peak shaving design (Smith)

4:45 pm  Software distribution and course evaluation (Seybert)


Invited Speaker:

Domenic Rocco, PE
Environmental Program Manager
PA-DEP Southeast Regional Office
Norristown, Pennsylvania

Technical Staff:

Thomas A. Seybert, PE, Conference Chair
Professor of Engineering
Penn State Wilkes-Barre
Lehman, Pennsylvania

Clayton Hodges, PE
Vice President Altizer, Hodges, and Varney, Inc.
Blacksburg, Virginia

Thomas F Smith II, PE, PLS
Bercek and Smith Engineering, Inc.
Royersford, Pennsylvania

The Computer Model

The VT/PSUHM is written in Visual Basic for operation under Microsoft Windows. The program provides for the transfer of VT/PSUHM output to Microsoft Excel and Microsoft Word. The program contains 23 interactive modules organized under five sub-menus as follows:

  • Utility modules: CN weighting, travel-time calculations, hydrograph addition, graphics plotting, swale design, circular pipe normal and critical depth calculations, basin-empty calculations, and storage volume of pipe on a slope.
  • Rainfall modules: U.S. Weather Bureau, Maryland, Pennsylvania Penn DOT PDT-IDF (1986) and Publication 584 (2008), and Virginia rainfall distributions; SCS type II and Ill rainfall distributions; and manual hyetograph entry.
  • Runoff modules: NRCS unit hydrograph, NRCS tabular hydrograph, rational hydrograph, and manual hydrograph entry.
  • Routing modules: Muskingum channel routing, modified Puls reservoir routing, MSRM, and Pro Basin Designer. MSRM is a design tool that allows engineers to configure up to ten stages in a complex outlet structure to meet a variety of peak discharge and water-quality target releases and manual input of outlet rating curves. Pro Basin Designer integrates several of the MSRM design modules into one streamlined module for the design of a basin for multiple events.
  • Surface profile module: Standard step-method backwater calculations.

VT/PSUHM Distribution

Because of the history and nature of the software, copies of the VT/PSUHM will be issued only to participants who attend all two days of the short course. The VT/PSUHM is not freeware (copyright Penn State 1984-2015, Virginia Tech 1996-2015) and was developed primarily for educational purposes. During its thirty-year existence the software has never been available for purchase. It has always been distributed as a teaching aid in this short course. The participants and their co-workers are welcome to use the software in private practice if they so desire. However, Penn State policy does not permit distribution of the software to parties who have not attended the short course. Any distribution beyond the short course remains exclusively the right of Penn State and Virginia Tech.