Showing posts with label Groundwater. Show all posts
Showing posts with label Groundwater. Show all posts

Saturday, November 5, 2022

3.16 Groundwater Flow in Innovyze H20Calc

 

3.16 Groundwater Flow

Groundwater has always been one of the most important sources of water supply. Virtually all parts of the earth are underlain by water, and wells have been constructed to provide a water supply when surface water was not readily available. Groundwater-bearing formations which are sufficiently permeable to yield usable quantities of water are called aquifers. When an aquifer is not overlain by an impermeable layer it is said to be unconfined. Confined aquifers consist of a water-bearing layer contained between two less permeable layers. This section presents the calculation of the steady flow in the confined or unconfined aquifers. It also presents the well hydraulics in confined or unconfined steady flow.

Steady Flow in a Confined Aquifer

 

If there is the steady movement of ground water in a confined aquifer, there will be a gradient or slope to the potentiometric surface of the aquifer. A portion of a confined aquifer of uniform thickness is shown in the following figure. The potentiometric surface has a linear gradient. There are two observation wells where the hydraulic head can be measured.

 

 

Steady Flow in a Confined Aquifer

 

For flow of this type, Darcy’s law may be used directly.

                                                                                                   

where q          =          flow rate per unit width of aquifer (m2/d, ft2/d)

            K         =          hydraulic conductivity of aquifer (m/d, ft/d) (see Table 3-13)

            dh/dl    =          hydraulic gradient

            B          =          aquifer thickness (m, ft) 

            L          =          flow length (m, ft) 

            h2         =          head at length L (m, ft) 

            h1         =          head at the origin (m, ft) 

 

Table 3-13: Soil Properties

Soil Type

Hydraulic Conductivity, K (cm/s)

Clayey

10-9 - 10-6

Silty

10-7 - 10-3

Sandy

10-5 - 10-1

Gravelly

10-1 - 102

The aquifer transmissivity is defined as a measure of the amount of water that can be transmitted horizontally through a unit width by the fully saturated thickness of the aquifer under a hydraulic gradient of 1. The transmissivity, T, (m2/d, ft2/d) is the product of the hydraulic conductivity (K) and the saturated thickness of the aquifer (B) as

 

T BK

Steady Flow in an Unconfined Aquifer

 

 

 

Steady Flow in an Unconfined Aquifer

 

In an unconfined aquifer, the fact that the water table is also the upper boundary of the region of flow complicates flow determinations. This problem was solved by Dupuit who made the following simplifying assumptions: (1) the hydraulic gradient is equal to the slope of the water table and (2) for small water-table gradients, the streamlines are horizontal and the equipotential lines are vertical. Using these assumptions, Depuit developed Equation (102), commonly known as the Dupuit equation.

                                                                                          

 

where q          =          flow rate per unit width of aquifer (m2/d, ft2/d)

            K         =          hydraulic conductivity of aquifer (m/d, ft/d) (see Table 3-13)

            L          =          flow length (m, ft) 

            h2         =          head at length L (m, ft) 

            h1         =          head at the origin (m, ft) 

Well Hydraulics of Confined Steady Flow

 

Darcy’s equation can be used to analyze axially symmetric flow into a well. If a well pumps long enough, the water level may reach a state of equilibrium; that is, there is no further drawdown with time. The following figure illustrates the flow conditions for a well in a confined aquifer.

 

 

Steady Flow to a Well in a Confined Aquifer

 

In the case of steady radial flow in a confined aquifer, the steady pumping rate is

 

                                                                 

 

where Q         =          pumping rate (m3/d, ft3/d)      

            K         =          hydraulic conductivity of aquifer (m/d, ft/d) 

            B          =          aquifer thickness (m, ft) 

            T          =          hydraulic transmissivity (m2/d, ft2/d)

            h2         =          head at distance r2 from the pumping well (m, ft)

            h1         =          head at distance r1 from the pumping well (m, ft)

            d2         =          drawdown at distance r2 from the pumping well (m, ft)

            d1         =          drawdown at distance r1 from the pumping well (m, ft)

 

Well Hydraulics of Unconfined Steady Flow

 

The following figure illustrates the flow conditions for a well in an unconfined aquifer. In the case of steady radial flow in an unconfined aquifer, the steady pumping rate is

 

                                                                                                                 

 

or

 

                                                                                                        

 

All the terms are consistent with the definitions given above.

 

 

Steady Flow to a Well in an Unconfined Aquifer

 

Tuesday, October 30, 2012

Format of the SWMM 5 Interface File

Note:  Format of the SWMM 5 Interface File

Here is an example and Figure 1 shows the format (from Iface.c in SWMM 5)

SWMM5 Interface File
This is from the 1st line of the SWMM 5 Model in the Title/Notes Section of the Data
900  - reporting time step in sec
1    - number of constituents as listed below:
FLOW CFS
1    - number of nodes as listed below:
10208
Node             Year Mon Day Hr  Min Sec FLOW
10208            2011 02  22  00  00  00  0.000000
10208            2011 02  22  00  15  00  0.000000
10208            2011 02  22  00  30  00  0.000000
10208            2011 02  22  00  45  00  0.000000
10208            2011 02  22  01  00  00  0.000000  

Figure 1.   Graph of the lines in the SWMM 5 Interface File



Tuesday, October 23, 2012

How to Use the Variable Flow Percentage Flow Splitter in InfoSewer

Subject:   How to Use the Variable Flow Percentage Flow Splitter in InfoSewer

How to use the Flow Splitter in InfoSewer for Dendritic Networks

by dickinsonre
Subject:  How to use the Flow Splitter in InfoSewer for Dendritic Networks

InfoSewer, which is an extension in Arc Map, does need to have slit split defined where gravity mains merge together to determine the amount of flow in each of the downstream conduits (Figure 1).   The options for the flow splitterin each of the downstream links are:
1.       Automatic Allocation
2.       Fixed Flow Percentage
3.       Variable Flow Percentage and
4.       Inflow-Outflow Curve 
At an outfall where the invert of the outfall pipe is raised compared to the inverts of the incoming and outgoing pipes a flow split of Variable Flow Percentage or Inflow/Outflow curve may work better (Figure 2). 

Figure 1. Options for Performing a Flow Split in InfoSewer


Figure 2.  The Effect of the flow split can be used to model complex situations in a dendritic model with outfalls.





Thursday, August 16, 2012

Fifty Years of Watershed Modeling – Past, Present and Future

Fifty Years of Watershed Modeling –
Past, Present and Future
September 24-26, 2012
Boulder, Colorado
On behalf of Engineering Conferences International and the conference chairs, Anthony S. Donigian, Jr. (AQUA TERRA Consultants), andRichard Field (US Environmental Protection Agency/ORD [retired], Michael J. Baker Jr., Inc.), it is my pleasure to extend this invitation to you to participate in Fifty Years of Watershed Modeling – Past, Present and Future to be held September 24-26, 2012 at NCAR (National Center for Atmospheric Research – Center Green Campus) in Boulder, Colorado.
Continuous Simulation using SWMM 5 LID and Groundwater Features in a Linked 1D/2D Network using InfoSWMM 2D for a 50 Year Period

has been accepted for Poster Presentation at the forthcoming conference Fifty Years of Watershed Modeling: Past, Present and Future to be held September 24-26, 2012 at National Center for Atmospheric Research (NCAR – Center Green Campus) in Boulder, Colorado.

Monday, July 30, 2012

InfoSWMM v11.1 Changes to Date


InfoSWMM v11.1:

Support ArcGIS 10.1.
InfoSWMM or H2OMAP SWMM import: corrected the typos in error messages. (HsHxfSvr.dll, N/A, 6/22/2012)
Improvement: for better hours/minutes listing in Report Manager Report Table for Continuous Simulation with Odd Report Time Step Intervals.  For example, this fix improved the output time display for irregular (in

60 minute sense) output time steps.  Now it displays 00:50, 01:40, etc. more correctly than before (00:49, 01:39, etc). (HsOutPkg.dll, N/A, 6/21/2012)
Improvement or Bug Fix:
Added an IF statement to the RDII Unit Hydrograph Convolution for the  rare instances in which the user sets the time base of the UH to zero by setting either T or K to zero.  The Time Base is T*K in the

convolution integral and zero values are not allowed.  This bug was also forwarded to the EPA for a future SWMM 5.  The convolution uses the value of R and the Time Base to estimate the amount of Infiltration and

Inflow in the Sewer Network.  The short, medium and long term UH’s are estimated at each Wet Hydrology time step to make a smooth hydrograph out of the R, T and  K parameters of the Rainfall Dependent Infiltration

and Infiltration Method. (HsEngPkg64.dll and HsEngPkg.dll, N/A, 6/21/2012)

Improvement: More information for the user when one of nine SWMM 5 warning messages are listed in the HTML Output File. (HsEngPkg64.dll and HsEngPkg.dll, N/A, 6/21/2012)
                These are the nine SWMM 5 Warning Messages
                "WARNING 01: wet weather time step reduced to recording interval for Rain Gage"
                "WARNING 02: maximum depth increased for Node"
                "WARNING 03: negative offset ignored for Link"
                "WARNING 04: minimum elevation drop used for Conduit"
                "WARNING 05: minimum slope used for Conduit"
                "WARNING 06: dry weather time step increased to the wet weather time step"
                "WARNING 07: routing time step reduced to the wet weather time step"
                "WARNING 08: elevation drop exceeds length for Conduit"        
                "WARNING 09: time series interval greater than recording interval for Rain Gage"
                And Here is the Extra Information Now Saved to the HTML Output File in case the user wants to know what is used internally in the engine.  This is especially handy information when moving a SWMM 5 model to

                IWCS or ICM.
Application Framework: introduce the new “Inherited” Facility Set option.  Scenario can now inherit facility selection from its ancestor which possesses a non-inherited facility definition. (HsCadPkgPkg.dll,

HsUI2Pkg.dll, and HsDBBPkg.dll, N/A, 6/21/2012)
                                       New Option in DB Tables for Scenarios

Correction:
The export to the hydqua.inp file when you solve a H2OMAP SWMM model now includes the infiltration data even if the Subcatchment DB Infiltration column is blank after the import of a SWMM 5 file.  The blank row

defaults to the global Infiltration option in Base Simulation Options. (HsDataPkg.dll, N/A, 6/14/2012)
Correction:
Eliminated a duplicate graph of storage infiltration in the Low Impact Development. (HsOutPkg.dll, N/A, 6/14/2012)

Correction:
Implemented a future EPA fix for infiltration loss on a pervious surface if snowmelt is being simulated.   This fix will be part of SWMM 5.0.023. (HsEngPkg64.dll and HsEngPkg.dll, N/A, 6/13/2012)
The error was the double counting the accumulation of snow cover as infiltration in the mass balance table – here is the mass balance without the fix in SWMM 5.0.022

Fixed the problem of Edit Domain Attribute.  It was caused by a table relate issue in DB engine. (HsMapSrv10.dll, N/A, 5/29/2012)
Recompiled to fix a compatibility issue of the validation tool. (HnUtl.dll and HsUtlSrv.dll, N/A, 5/29/2012)

CapPlan
-------
Fix flowchart run issue. (HsCIPSrv.dll, N/A, 5/29/2012)

InfoSWMM v11 Update 10:

Changes & Improvements

Fix subcatchment vertex export issue for EPS-SWMM. (H2OSWMM.exe, N/A, 4/18/2012)
Scenario Comparison: Now, the “Hide Unchanged Column(s)” right-click command works correctly. (HsUI2Pkg.dll, N/A, 4/17/2012)
Netview Storage/Wet-Well Output: Fixed an invalid output data field problem. (HsOutPkg.dll, N/A, 4/12/2012)
Scenario Comparison: Fixed Duplicated ID Alias problem. (HsUtilPkg.dll and HsDBBPkg.dll, N/A, 4/11/2012)
Crashed Project Restoration: Now, active scenario ID could be reliably restored


RDII
-----
Check negative GA Hydrograph solution value during export back to InfoSWMM or H2OMAP SWMM. (HsRDIIPkg.dll, N/A, 5/3/2012)

InfoSWMM v11 Update 9:

Changes & Improvements

Simulation Run Report : Added a Scenario data source reference to the title notes section of the RPT file. (HsEngPkg.dll, HsEngPkt64.dll, and HsDataPkg.dll, N/A, 3/15/2012)
Simulation Run Output Data Access: Improved 64-bit access reliability for simulation run output data. (HsEngPkg.dll, HsEngPkg64.dll, and HsOutPkg.dll, N/A, 3/19/2012)
Small Time Base fix for RDII flow to match an upcoming SWMM 5 version (HsEngPkg.dll, HsEngPkt64.dll, and HsDataPkg.dll, N/A, 3/16/2012) :
Description: SWMM 5 makes the time interval used for convoluting the unit hydrographs within a group the smaller of the wet runoff step and the smallest time to peak for the

hydrographs in the group. This works OK when all the hydrographs have rising limb durations no longer than that of the falling limb (i.e., K >= 1.0). For example, the short term

UH has a K value of 0.3, with rising limb time of 42 minutes and falling limb time of  12.6 minutes. As a result, the time interval selection rule stated above was producing too

large a time step for a wet runoff step of 30 minutes causing the convolution to ignore a good portion of the UH.  The rule was modified to compare the wet step to the SMALLER of

the time to peak and time to recede.
Importance of this  for past and future InfoSWMM and H2OMAP SWMM models:

1.            Again, it is a significant and BETTER reason to use the current SWMM 5 engine over v13 of the SWMM 5 engine,
2.            It makes the convolution more robust for a small time base in the RTK method or the Time Base= T*K
3.            It may cause RDII flow differences in this engine if T*K is small over past engines

Add Vertical Roughness to preferences dialog. (HsMapSrv.dll, N/A, 4/4/2012)

2D
---
Upgrade

InfoSWMM v11 Update 8:

Changes & Improvements

Retain the compatible size for dialog boxes with fixed frame when user changes the screen resolution (DPI) in Windows 7. (HnUtilPkg.dll, N/A, 2/15/2012)
Support upcoming Innovyze application data folder and new product configuration file location. (HxLoader.dll, N/A, 2/15/2012)
Fix:  Improved the Change ID beep interval  for a change to the element ID using the Change ID Command. (HsUtilPkg.dll and HsCadPkg.dll , N/A, 2/4/2012)
Import of a SWMM 5 File with a Duplicate ID now tells you the name and class of object that is duplicated so it can be edited in SWMM 5.(HsDataPkg.dll, N/A, 1/31/2012):
New Feature (HEC_HMS_HYETOGRAPHS.inp, N/A, 2/2/2012): 
How to import the 44 possible SCS Storms from HEC-HMS.  The file HEC_HMS_HYETOGRAPHS.inp is imported into  InfoSWMM using the command Import EPASWMM 5 Data to import just the Raingage and Timeseries data from SWMM5.  The Timeseries data is a copy of the HEC-HMS data for each of the possible SCS Storms for SCS Type1, Type1A,  Type2 and Type3 for 1 minute, 2 minute, 3 minute, 4 minute, 5 minute, 6 minute, 10 minute, 15 minute, 20 minute, 30 minute and 1 hour intervals, respectively.   This is done so that the user of InfoSWMM has the option of using the exact HEC-HMS dimensionless precipitation for every interval and every SCS Storm Type.
New Feature (huff.inp, N/A, 2/2/2012):
How to import a dimensionless Huff distribution into InfoSWMM from http://www.alanasmith.com/theory-Derivation-Huff-Storm.htm using the SWMM 5 Import Command and a simple SWMM 5 file with Huff Distribution Rainfall.

CapPlan
--------
Fix Final Summary Report Field Offset. (HsCIPSrv.dll, N/A, 2/29/2012)
Fix database compatibility after version upgrade for Final Condition calculation (HsCIPSrv.dll and HsCIPSrv10.dll, N/A, 3/2/2012)

InfoSWMM v11 Update 7:

Changes & Improvements

Altered the last cumulative rainfall value to use exclusively the polynomial value. (HsUI4Pkg.dll , N/A, 1/18/2011)   
The ending value for example for a 10 inch hyetograph is now

SCS1         9.9 inches
SCS1A     10.008 inches
SCS2        10.0  inches
SCS3        10.0  inches

For the 4 types of SCS Hyetographs, instead of setting the ending rainfall value to 10 inches which caused a small spike in the SCS Type 1 hyetograph for the last point in the SCS hyetograph


CapPlan
--------
Fix FlowChart Analysis when project does not have CCTV data. (HsCIPSrv.dll, N/A, 1/20/2012)

InfoSWMM v11 Update 6:

Integration of Arc GIS 9.3 and Arc GIS 10.0 Installs

InfoSWMM v11 Update 5:

Changes & Improvements


SWMM 5 Export of Dry Weather Flow (HsDataPkg.dll , N/A, 10/25/2011) :
                1.            Many of our users use our DWF Allocator to assign dry weather flow to nodes based on meter data or loading areas
                2.            If they do this improperly then they may get many rows of DWF with zero flows in H2OMAP SWMM
                3.            This does not matter to H2OMAP SWMM as unlimited loads can be assigned to a node but
                4.            This is a problem in the export to SWMM 5 as SWMM 5 has a limitation of one DWF load per node
                5.            Zero DWF loads at a node are now NOT exported to SWMM 5 which makes this more compatible with the internal rules of SWMM 5
                6.            Only Non Zero DWF’s are now Exported
Fixed Dialog Display Issues for Annotation Dialog – moved label frames for overlapping frames.  Annotation is the 3rd Tab in the InfoSWMM Attribute Browser. (HsMapSrv10.dll, N/A, 10/24/2011)

Fix Validation Rule Buffer issue. (HsUI4Pkg.dll, N/A, 10/21/2011)

Fix:   A Change to the  Rule Control Status from Open/Close to On/Off for EPA SWMM 5 Control Section Compatibility. (HsUI4Pkg.dll, N/A, 10/20/2011)

                [CONTROLS]
                RULE LS-32_PMP-1
                IF PUMP LS-32_PMP-1 STATUS = ON
                AND PUMP LS-32_PMP-1 STATUS = ON
                THEN PUMP LS-32_PMP-1 SETTING = 0.100000
                PRIORITY 1.00000

                RULE LS-32_PMP-1A
                IF NODE LS-32 DEPTH > 6.250000
                AND PUMP LS-32_PMP-1 STATUS = ON
                THEN PUMP LS-32_PMP-1 SETTING = 0.750000
                PRIORITY 1.0000

Fix dialog boxes display issues for Win7. (HsMapSrv10.dll, HsCIPSrv10.dll, and HsCIPSrv10.dll, N/A, 10/21/2011)

CapPlan
--------
Improve Scoring Speed for Pipe Condition Scores. (HsCIPSrv.dll, N/A, 12/5/2011)

InfoSWMM v11 Update 4:

Changes & Improvements

DB Editor: Newly Added Information Field won’t appear until the table is re-opened.  It is now fixed. (HsUtilPkg.dll and HsDBBPkg.dll, N/A, 10/5/2011)
Attribute Browser:  Edit Junction Tables All, Domain and Selection were not loading – it is now fixed. (HsHxfSvr.dll and HsDBBPkg.dll, N/A, 10/2/2011)
Fixed a Windows 7 display issue of Preferences dialog.

Attribute Editor: Prevented the dialog switching to the first tab when users sort a data column.   This is now fixed. (HsMapSrv9.dll and HsMapSrv10.dll, N/A,10/2/2011)
                Edit Selection Attributes
                Edit Domain Attributes
                Group Editing on Selection
                Group Editing on Domain

Subcatchment
--------------
Subcatchment Manager:  Improved the Exception Handling for Creating Subcatchments. (HsSubcatchSrv10.dll , N/A, 10/11/2011)

InfoSWMM v11 Update 3:


New = A very important feature in InfoSWMM and H2OMAP SWMM is the ability to have Network Scenario’s.   Each Network Scenario is either a Base Scenario or a Child Scenario of the Base Scenario or other Child Scenario’s.    The Child Scenario’s may have different Data Set’s associated with them but previously in InfoSWMM and H2OMAP SWMM you could only use the DB Editor with the Data Sets in the Active Scenario.  
You can now use the DB Editor to edit ANY Data Set from any Scenario by using the new Data Set Selection Command at the bottom of the DB Open Table Dialog or by clicking on the ellipsis at the bottom of the dialog. (HsDBBPkg.dll, N/A, 8/26/2011)
An Internal Engine Feature in SWMM 5 and of course in H2oMAP SWMM and InfoSWMM is the automatic raising of the node rim elevation when any connecting pipe crown, weir or orifice is above the existing rim elevation.   Many users of our software use this feature to eliminate the need for entering node maximum depths.  The input HGL profile for would show the zero maximum depth of the node – this is now fixed and the program will plot the highest connecting link crown as the node rim elevation. (HsUI3Pkg.dll and HsOutPkg.dll, N/A, 8/26/2011)
HGL Visual Representation of Weirs, Orifices and Outlets in Input and Output HGL Plots
- Weir, Orifice and Outlets Inverts and Crest Elevation are now shown flat to correspond to the SWMM 5 internal Engine Convention
Link[j].offset2 = Link[j].offset1;. (HsUI3Pkg.dll and HsOutPkg.dll, N/A, 8/26/2011)
The infiltration or evaporation storage node or pond in InfoSWMM may be simulated using Green Ampt Infiltration and Pan Evaporation using options in the Attribute Browser. (HsEngPkg.dll and HsEngPkg64.dll, N/A, 8/31/2011)
                The fixes are:
                1.            The System Evaporation is now in units of inches/day or millimeters/day
                2.            Extra Decimal places were added to the Storage Summary Table


CapPlan
----------
Fix buffer unit conversion so that the proper judgment about the closeness of two pipe defects so that the program may consider merging them. (HsCIPSrv10.dll , N/A, 9/12/2011)
Fix cost lookup with Max. Depth and Min Depth. (HsCIPSrv10.dll , N/A, 9/19/2011)

2D
---
Trying to color code 2D results might crash the program after mesh data was manually deleted.  Now it has been fixed. (HsSDServices.dll , N/A, 9/14/2011)
DB Editor: Allow the user to edit data table of any desired DATA SET. (HsDBBPkg.dll , N/A, 8/22/2011)

InfoSWMM v11 Update 2:

Exchange\Import EPA SWMM 5 Command:
The Offsets Elevation Flag in a SWMM 5 import data set is now both imported and translated to the Store Absolute Condit Invert Flag in Tools Preferences/Operation in InfoSWMM.  This allows more SWMM 5 compatibility for the InfoSWMM flags using the Import EPA SWMM 5.0.001 to EPA SWMM 5.0.022 Command. (HsDataPkg.dll, N/A, 7/29/2011)
HGL Profile for Small q/Q values:
The output report manager HGL Profile no longer sets the color of the link fill  to white when the value of q/Q and the velocity are both small.  A value of d/D of 1 will still show a blue fill color in the HGL Plot. (HsOutPkg.dll, N/A, 7/29/2011)
Fix of a Hyetograph Name Typo and Reordering. (HsUI4Pkg.dll, N/A, 8/8/2011)
SCS Hydrology CN Printout Clarification: CN in the Output Text File and Output Report Manager. (HsEngPkg.dll and HsEngPkg64.dll, N/A, 8/4/2011)
Trace Network: Insufficient memory allocation for model with long IDs caused the program to crash in Arc GIS.  It is now fixed. (HsUI2Pkg.dll, N/A, 8/4/2011)
Just a reminder as well for Joe – all of Chun-Hou’s recent changes for SCS Hydrology are NOT in the most recent install.  8/11/2011 hsnetviewsrv10.dll
Project Init & Save: support the new ESRI File Geodatabase project. (HeUtilPkg.dll, N/A, 8/18/2011)
Add Risk Tile to report and summary. (HsCIPSrv.dll, N/A, 8/19/2011)


InfoSWMM v11 Update 1:

Output Relate: Fixed Output Relate generation problem for the Junction Summary report. (HsOutPkg.dll, N/A, 6/23/2011)
Increased Mix Graph Options for Outfall Data and System Data. (HsUI2Pkg.dll and HsEngPkg.dll, N/A, 6/6/2011)
Name change for Innovyze-SWMM LID Report File
Importing EPA SWMM file was using an incorrect file selection dialog.  Now it has been fixed.
An update to the DWF Pattern Calculation at Hour 24 when using Variable Time Step.  The pattern is now set at the pattern at hour 23 based on pattern hours from 0 to 23. (HsEngPkg.dll, N/A,

5/27/2011)
Previously, the Variable Time Step would have an undefined pattern value at hour 24 when the variable time step option was used but fixed time step was properly set to the pattern at hour 23.
Missing file (HnFileMonitor.dll, N/A, 6/7/2011)
Enhanced Low Impact Development (LID) Water Quality Graphics and Report. (HsStatPkg.dll,HsOutPkg.dll HsEngPkg.dll, HsEngPkg64.dll, N/A, 6/7/2011)

Fix the Low Impact Development LID (HsUI4Pkg.dll, N/A, 7/21/2011)  M
Underdrain Height Offset Dialog Unit.
The Underdrain Process Layer consists of:
                1.            Drain Coefficient (inches/hour or millimeters/hour)
                2.            The Void Ratio as a Fraction (0 to 1),
                3.            Drain Exponent
                4.            Drain Offset Height (inches or millimeters)

Changed the name of the Checkbox for Saving Output in the Low Impact Development (LID) Usage Editor for Subcatchments.  The Checkbox if checked saves the detailed LID Control Pathways for each

Control in a Subcatchment (HsUI4Pkg.dll, N/A, 7/20/2011)  M

Output Report Manager: A Change to the Output Report Manager to better handle 1 second time steps in the Report Table Section.  This was added to better see the output for Pumps and Force Mains when the Pumps turn on for only a few seconds.  It also allows the user to see the output data and graph a subset of a  long simulation run.  For example, if the user saves at a one second time step for a week this will allow him or her to see all 604800 data points and graph or perform statistics on 5 second  intervals if needed.  It was needed for those simulations in which the Maximum and Report Time Steps are the Same and the time step is small.  If you do save a million or more data points it would behoove you to use the Domain only as the Output Scope in the Run Manager to cut down on graphing time and the Out Folder Size. (HsOutPkg.dll, HsEngPkg.dll, N/A, 7/15/2011)  M

Browser Simulation Report: Added the Outfall Loading Summary to the Browser Simulation Report to be compatible with the SWMM 5.0.022 Status Report; this information has been and is also available as a Tabular Report in the Output Report Manager
The change is for both the 32 and 64 bit Engines as well as the Output Report Manager. (HsEngPkg64.dll, N/A, 7/15/2011)  M

Put in the LID Help ID and Help Topics connected to the Help ID. (HsUI4Pkg.dll, N/A, 7/26/2011) 

Increased Mix Graph Options for Outfall Data and System Data. (HsUI2Pkg.dll and HsEngPkg.dll, N/A, 6/6/2011)
Name change for Innovyze-SWMM LID Report File
Change MWH Soft to Innovyze in Preferences/Operation Settings tab. (HsMapSrv.dll and HsMapSrv10.dll, N/A, 6/2/2011)
Importing EPA SWMM file was using an incorrect file selection dialog.  Now it has been fixed.
An update to the DWF Pattern Calculation at Hour 24 when using Variable Time Step.  The pattern is now set at the pattern at hour 23 based on pattern hours from 0 to 23. (HsEngPkg.dll, N/A,

5/27/2011)
Previously, the Variable Time Step would have an undefined pattern value at hour 24 when the variable time step option was used but fixed time step was properly set to the pattern at hour 23.
Missing file (HnFileMonitor.dll, N/A, 6/7/2011)

Hide cross section browser after loading. (H2OSWMM.exe, N/A, 5/16/2011) H
Recompile due to compatibility for the Validation and Audit Tools. (HsUtlSrv.dll, N/A, 5/16/2011) I
Updated EPA SWMM 5 Engine: Updated the InfoSWMM engine to be compatible with the new SWMM 5.0.022 Version. (HsDataPkg.dll, N/A, 5/19/2011)
Fixed 2D license pop up. (HsUI4Pkg.dll, N/A, 5/24/2011) I
Fixed CapPlan license pop up. (CapPlanSvr, N/A, 5/23/2011) I


InfoSWMM Executive Products:
RDII
-----
Fix RDII Analyst GWI calculation  Support Case ID:  18853. (HsRDIIPkg.dll, N/A, 7/26/2011) M

InfoSWMM v11:

Changes & Improvements
----------------------
Add CCTV Grade Source Field, allow CCTV as a rehab for Asset Grading, and change Advanced Scheduling to allow CCTV Rehab. (HsCIPSrv.dll, N/A, 10/8/2010)
Export [POLLUTANTS] Data to EPA-Swmm: fixed missing Pollutant ID data problem when the Description field is missing. (HsDataPkg.dll, N/A, 10/22/2010)
Google Map Link: updated to support new Google map URL syntax. (HaMapSrv.dll, N/A, 10/26/2010)
Output Report / Graph: enlarged time drop-down combo boxes to accommodate longer simulation periods. (HnUI2Pkg.dll, N/A, 11/2/2010)
Output Manager Display: Fixed invalid Result error problem when the report time step is small to include the extended Second portion. (HsOutPkg.dll and HsUI3Pkg.dll, N/A, 11/2/2010)
Model Data Generation to Run Simulation: Fixed an invalid flow unit problem when the DB table flow unit field is undefined. (HsDataPkg.dll, N/A, 10/27/2010)
Fix to the Santa Barbara Urban Hydrograph Method to match the UG equation 42’s usage of impervious area. (HsEngPkg.dll, N/A, 10/27/2010)
Add Media Player Detection message and fix radio button in Planning due to Windows 7. (HsCIPSrv.dll , N/A, 11/15/2010)
Fix BiDirectional Risk Calculation. (HsCIPSrv.dll , N/A, 11/24/2010)
Allow users to zoom into the map in field report. (Template\CIP\report folder , N/A, 11/20/2010)
Add Google Map to Field Report. (HsCIPSrv.dll , N/A, 11/20/2010)
Fixed a crash problem of Dual Drainage. (HsMapSrv.dll , N/A, 12/01/2010)
Compatibility Fix to Engineering Review Tools and Network Audit Tools for Arc GIS 9 to prevent a Type Mismatch Error. (HsUtlSrv.dll , N/A, 12/15/2010)
This file should go into C:\Program Files\Common Files\MWH Soft Shared. (HsUtlSrv.dll , N/A, 12/15/2010)
Improved the connection algorithm for the Locate/Fix Conduit Split Candidates Tool as in InfoWater. (HsMapSrv.dll , N/A, 12/15/2010)
Create Storage Curve: an error message will be issued if Spatial Analysis is not available to avoid program crash. (HsMapSrv.dll , N/A, 12/9/2010
                Please select a node  ...
                Please specify a storage area...
                ERROR 010096: There is no Spatial Analyst license currently available or enabled.
                No crash of program – just a message in the Message Area
New Requirement: When there is a set of outlets at each end of a pipe, the user has to manually create the Major Conduit. (HsMapSrv.dll , N/A, 12/7/2010)
New Message: Could not determine the shape of Major Conduit for conduit '8040A'.  Please manually create it.

RAM
---
Fix Based on Maximum Head in Create Flood Damage Extent Tool. (HsConseqSrv.dll, N/A, 3/5/2010)

Thursday, July 26, 2012

How to Make a SWMM 5 Interface File from InfoSWMM


Subject:  How to Make a SWMM 5 Interface File from InfoSWMM

 The steps are easy:
1.       Make all Links Inactive by using the Facility Manager
2.      Save the flows to the OUTFLOWS file of InfoSWMM
3.      The Outlet Node of Each Subcatchment will be save to the Text File
4.      Use the Created OUTFLOWS file as the INFLOWS file in SWMM5

Tuesday, July 10, 2012

How is Capillary Suction Head Used in SWMM 5 Green-Ampt?

Subject:   How is Capillary Suction Head Used in SWMM 5 Green-Ampt?

How is Capillary Suction Head Used in SWMM 5 Green-Ampt?

by dickinsonre
Subject:   How is Capillary Suction Head Used in SWMM 5 Green-Ampt?

How sensitive is the infiltration loss and rate to the capillary suction head parameter in the SWMM 5 Green-Ampt  infiltration method.   Figure         1 shows how the total infiltration loss and total loss rate vary as you change the suction head from 12 to 6 to 3 inches.    Internally the suction head is used in infil.c of SWMM 5 by adding the suction head to the ponded water on the pervious area in the parameter c1 of the implicit Green-Ampt SWMM5 solution.

C1 =  (Suction Head + Depth of Ponded Water) * IMD or Initial Moisture Deficit
  

Figure 1.  The sensitivity of the total infiltration loss to the capillary suction head in a continuous simulation

Wednesday, July 4, 2012

How are Negative Transect Elevations Used in SWMM5?

Subject:   How are Negative Transect Elevations Used in SWMM5? 

How are Negative Transect Elevations Used in SWMM5?

by dickinsonre
Subject:   How are Negative Transect Elevations Used in SWMM5?

You can have negative elevations in the Transects of SWMM 5 as the elevations are transformed internally to relative depths above the node inverts in the SWMM 5 engine (Figure 1).   The slope of the link is calculated from the link offset elevations (Figure 3) and the cross sectional information for the irregular link in SWMM 5 (Figure 2) is computed from the Transect data (Figure 4).   The Water Surface elevation of the link is based on the node inverts (Figure 5).


Figure 1.  Transect Editor of SWMM 5


Figure 2.  The Transect Data is Used in the Irregular of HEC-RAS Shape of SWMM 5

Figure 3.  The slope of the link with the Transect is calculated from the link upstream and downstream offset elevations – not the Transectdata which is relative.

Figure 4.  Transect Data Transformed into Tables of Area, Hydraulic Radius and Width from the Transect Data internally in SWMM 5.



Figure 5.  HGL of the Water Surface Elevation from the Node Invert and Link Offset Elevations.



  









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