Dry Weather Flow in InfoSWMM and H2OMap SWMM
Dry weather flow can be added to any node in H2OMAP SWMM. The dry weather flow is computed as the average flow * the monthly pattern * the daily pattern * hourly pattern * the weekend daily pattern to give the Dry Weather Flow at any time step (Figure 1). Since the four types of patterns (Figure 2) are all multiplied together then for Saturday and Sunday the hourly pattern and the weekend hourly pattern will both be used. This will have the effect of overestimating the flow if the multipliers are greater than 1 and underestimating theflow if the multipliers are less than one. You should enter the Pattern X for the Weekend Hourly Pattern in H2OMAP SWMM where
X = Weekend Hourly Pattern / Hourly Pattern
So that when the pattern X is multiplied by the Hourly Pattern the program will use the intended Weekend Pattern.
Figure 1. How Dry Weather Flow is Computed in H2OMAP SWMM
Figure 2. The Four Types of Time Patterns in H2OMAP SWMM, InfoSWMM and SWMM 5
|
Autodesk Technologist with Information about Stormwater Management Model (SWMM) for watershed water quality, hydrology and hydraulics modelers (Note this blog is not associated with the EPA). You will find Blog Posts on the Subjects of SWMM5, ICM SWMM, ICM InfoWorks, InfoSWMM and InfoSewer.
Showing posts with label Dry Weather Flow in SWMM 5. Show all posts
Showing posts with label Dry Weather Flow in SWMM 5. Show all posts
Monday, July 11, 2011
Dry Weather Flow in SWMM 5
Subscribe to:
Posts (Atom)
AI Rivers of Wisdom about ICM SWMM
Here's the text "Rivers of Wisdom" formatted with one sentence per line: [Verse 1] 🌊 Beneath the ancient oak, where shadows p...
-
@Innovyze User forum where you can ask questions about our Water and Wastewater Products http://t.co/dwgCOo3fSP pic.twitter.com/R0QKG2dv...
-
Subject: Detention Basin Basics in SWMM 5 What are the basic elements of a detention pond in SWMM 5? They are common in our back...
-
Soffit Level ( pipe technology ) The top point of the inside open section of a pipe or box conduit. The soffit is the ...