Sunday, July 31, 2011

RDII Parameters for SWMM 5

Subject:  RDII Parameters for SWMM 5

There are three types of RDII Response, six different parameters and an annual and optional twelve monthly sets of distinct parameters.


RDII Intial Abstraction in SWMM 5

Subject:  RDII Initial Abstraction in SWMM 5

RDII Initial Abstraction in SWMM 5

by dickinsonre
Subject:  RDII Initial Abstraction in SWMM 5 
The initial abstraction in each of the three components of RDII in SWMM 5 are updated at each time step.  The initialabstraction (ia) is:
 ia = iaMax - iaUsed 
based on the maximum amount of ia, the ia used (iaUsed), the recovery rate (iaRecov) and the month and class of RDII.  You can enter a value for iaMax, iaInit and iaRecov for each month. 
 
The iaUsed at the beginning of the simulation is set equal to iaInit

and if there is no rainfall



The Groundwater flow in SWMM 5 Groundwater

Subject:  The Groundwater flow in SWMM 5 Groundwater

The Groundwater Flow Component in SWMM5

by dickinsonre
Subject:  The Groundwater flow in SWMM 5 Groundwater 
The Groundwater flow in SWMM 5 is actually made up of three components: 
1.   groundwater flow computed from the coefficient a1 and exponent b1
2.   groundwater flow computed from the coefficient a2 and exponent b2 and
3.   A Surface Water / Groundwater Interaction coefficient a3
The total Groundwater flow is the sum of the flow from 1, 2 and 3 – normally 2 is the opposite of 1.




Saturday, July 30, 2011

Exit, Other and Entrance Loss Values in SWMM 5

Subject:  Exit, Other and Entrance Loss Values in SWMM 5

The entrance, exit and other losses in SWMM 5 are computed at the upstream, downstream and midpoint of the sections of the link.  However, if the normal flow equation is used for the link during a time step then these losses are zero as the flow in the link is based solely on the upstream area and upstream hydraulic radius of the link.   If you add loss coefficients and the normal flow equation is used then you will not see any change in the flow as you modify the loss coefficients.

Exit, Other and Entrance Loss Values in SWMM 5

by dickinsonre
Subject:  ExitOther and Entrance Loss Values in SWMM 5

The entranceexit and other losses in SWMM 5 are computed at the upstream, downstream and midpoint of the sections of the link.  However, if the normal flow equation is used for the link during a time step then these losses are zero as the flow in the link is based solely on the upstream area and upstream hydraulic radius of the link.   If you add loss coefficients and the normal flow equation is used then you will not see any change in the flow as you modify the loss coefficients.




Link Simulated Parameters used in either the Normal Flow or St Venant Equation of SWMM 5

Subject:  Link Simulated Parameters used in either the Normal Flow or St Venant Equation of SWMM 5

St. Venant equation – this is the link attribute data used when the St. Venant Equation is used in SWMM 5.  Simulated Parameters from the upstream, midpoint and downstream sections of the link are used.

Normal Flow Equation – this is the link attribute data used when the Normal Flow Equation is used in SWMM 5. Only simulated parameters from the upstream end of the link are used if the normal flow equation is used for the time step.

Link Simulated Parameters used in either the Normal Flow or St Venant Equation of SWMM 5

by dickinsonre
Subject:  Link Simulated Parameters used in either the Normal Flow or St Venant Equation of SWMM 5

StVenant equation – this is the link attribute data used when the StVenant Equation is used in SWMM 5.  Simulated Parameters from the upstream, midpoint and downstream sections of the link are used.
Normal Flow Equation – this is the link attribute data used when the Normal Flow Equation is used in SWMM 5. Only simulated parameters from the upstream end of the link areused if the normal flow equation is used for the time step.

Green Roof LID Control in SWMM 5

Subject:  Green Roof LID Control in SWMM 5

I saw this on the Daily Dish, http://andrewsullivan.thedailybeast.com/2011/07/roo.html, it is an extremely green roof but a roof that can be simulated in SWMM 5.  You simulated it as a Bio Retention Cell with a Surface, Soil, Storage and an Underdrain to the Gutters of the roof.  You can also have a rain barrel connected to the gutters to storage and drain the rainfall. 


Thursday, July 28, 2011

Weir and Orifice Flow Equations for a Weir in SWMM 5

Note:  Weir and Orifice Flow Equations for a Weir in SWMM 5

If you use a weir in SWMM 5 then two flow equations are used

1.       The weir uses the weir flow equation when the head at the weir is between the invert elevation of the weir and the crown of the weir and
 2.      An orifice equation when the head is above the weir crown or the weir is submerged.

Weir and Orifice Flow Equations for a Weir in SWMM 5

by dickinsonre
Note:  Weir and Orifice Flow Equations for a Weir in SWMM 5
If you use a weir in SWMM 5 then two flow equations are used
1.       The weir uses the weir flow equation when the head at the weir is between the invert elevation of the weir and the crown of the weir and
2.      An orifice equation when the head is above the weir crown or the weir is submerged.



Friday, July 22, 2011

Philadelphia Low Impact Development Symposium



Philadelphia Low Impact 
Development Symposium

Greening the Urban Environment

September 25-28, 2011, Philadelphia, PA

Image courtesy of Philadelphia Water Dept.

Sunday, September 25, 2011

9:00am - 4:30pm Pre-Conference Workshops
9:00am - 12:00pm - LID 101: Basic Concepts and Applications
9:00am - 12:00pm - Extensive Green Roof Design for Civil/Stormwater Engineers
1:00pm - 4:30pm - LID 201: Design Guidelines for LID Practices
1:00pm - 4:30pm - Permeable/Pervious Pavement
Pre-Conference Workshops
9:00am - 4:30pm
Commonwealth Rooms

Monday, September 26 - Plenary Session

Mr. Howard Neukrug 
Commissioner
Philadelphia Water Department
We are pleased to have Commissioner Howard Neukrug of the Philadelphia Water Department as our Plenary Speaker. Commissioner Neukrug has been the driving force behind the Green City, Clean Waters approach to solutions to the city's Combined Sewer Overflow challenges. Links to the city's plan can be found here:http://www.phillywatersheds.org/what_were_doing/documents_and_data/cso_long_term_control_plan/
Joining Commissioner Neukrug in welcoming the participants will be:
  • Robert G. Traver, PhD, PE, WRE, Professor and Director, VCASE and VUSP, Conference Chair
  • Tom Davenport - Director, EPA 319 Non Point Source Monitoring Program
  • Glen Rider, Director, Bureau of Watershed Management, PA DEP
  • Shawn M. Garvin, Administrator for EPA's Mid-Atlantic Region
photo of Philadelpia
Photo Courtesy of the Philadelphia Water Department.
Plenary
Monday, 8:30 am
Regency Ballroom

Chesapeake Bay Panel - "LID and the Chesapeake TMDL"

Chesapeake Bay
Moderator: Robert G. Traver, PhD, PE, WRE 
Professor and Director, VCASE and VUSP,
Conference Chair
The purpose of this panel is to discuss the role of LID in meeting the TMDL requirements for Nitrogen and Phosphorus reductions in the Chesapeake Bay. Each panelist will be asked to first make a brief overview of their thoughts on the issue. A moderated discussion will follow based upon submitted questions to the moderator. Please feel free to submit questions prior to the conference to the moderator.
(Image Source – USEPA Chesapeake Bay Program Office)
Panel
9:30 am
Regency Ballroom

LID-MARC

Moderator: Bill Hunt, PhD, PE 
Associate Professor, NC State University
Conference Co-Chair
Present and Future Directions with LID Research
Bill Hunt, NC State University
Allen Davis, University of Maryland
Robert Traver, Villanova University
Plenary, Cont'd
10:00 am
Regency Ballroom

Technical Sessions

Track ITrack IITrack IIITrack IVTrack VTrack VITrack VIITrack VIII
SCMs ISCMs IIAssessing LIDPlan & StndCities & StreetsModels & CSOsOutreach & Codes319 & Chesapeake
Monday, September 26, 2011
10:50amLID/MARCMonitoringLID Econ IDesStand ISustain & LID IFilter/ManufOutreach I319 I
1:40pmBioret IHarscape ILID Econ IIDesStand IISustain & LID IIModels IOutreach II319 II
3:40pmBioret IIHardscape IIMetricsDesStand IIIStreets IModels IIOutreach II319 III
Tuesday, September 27
8:30am *5*NonStructPhillyVolRed IMuni Pln IDC 1CSOs 1W'shed Pln IChes Fed
10:55amBioret IIIG. Roof IVolRed IIMuni Pln IIStreets IICity Pln IOutreach IVPanel
1:45pmBioret IVG. Roof IIAttenuat'nCity Pln IIStreets IIIModels IIIRegs & Code I319 IV
3:45pmMediaG. Roof IIIExtreme LIDCity Pln IIIStreets IVModels IVRegs & Code II319 V
Wednesday, September 28
8:30am *5*O & MW. Harvest IEcologyW'shed Pln IIDC IICSOs IITransprt ICase Studies
10:55amW. Harvest IICampusClimate ChTransprt IICSOs IIIRegs & Code III319 VI

Wednesday, September 28, 2011

Field Tours - 1:00 - 4:30pm
Tour A - Villanova Urban Stormwater SCM Research and Demonstration Park
Tour B - Reinventing the Neighborhood (PWD)
Tour C - Urban LIDs (PWD)
Tour D - Stroud Preserve and Stroud Water Research Center 319 NPS National Monitoring Site
Link Here  
Field Tours 
1:00pm - 4:30pm

Updated July 18, 2011

InfoSWMM Version Numbers and the version of Arc Map they use and which EPA SWMM5 Engine is used for Each InfoSWMM Version

 InfoSWMM Version Numbers  InfoSWMM Version 14.7  Update 3 for Arc Map 10 to 10.8 and Windows 7/8/8.1/10 - EPA SWMM 5.1.014   4/12/2020   ...