Hydrology
Posts about runoff, groundwater, infiltration, RDII etc
Hydrology, Rainfall, Rossman, SWMM5
Refactoring the SWMM 5 Help File – Climate Data in SWMM5
Climate Data in SWMM5
| Climatology |
The Climatology object in EPA SWMM describes the following climate-related variables used for computing runoff and snowmelt:
| · | Temperature |
| · | Evaporation |
| · | Wind Speed |
| · | Snowmelt |
| · | Areal Depletion |
| · | Climate Adjustments |
| Rain Gages |
Rain Gages supply precipitation data for one or more subcatchment areas … Read the rest
Hydrology, Rossman, SWMM5
Refactoring the SWMM 5 Help File – Groundwater in SWMM5
Groundwater in SWMM5
| Aquifers |
Aquifers are sub-surface groundwater zones used to model the vertical movement of water infiltrating from the subcatchments that lie above them. They also permit the infiltration of groundwater into the drainage system, or exfiltration of surface water from the drainage system, depending on the hydraulic gradient … Read the rest
Hydrology, Rossman, SWMM5
… Read the rest
Refactoring the SWMM 5 Help File – Hydrology in SWMM5
Hydrology in SWMM5
| Hydrologic Modeling Features |
SWMM accounts for various hydrologic processes that produce runoff from urban areas. These include:
| · | time-varying rainfall |
| · | evaporation of standing surface water |
| · | snow accumulation and melting |
| · | rainfall interception from depression storage |
| · | infiltration of rainfall into unsaturated soil layers |
| · | percolation |
#INFOSWMM, Hydrology, InfoSWMM, InfoSWMM_SA
Surface Runoff Methods in InfoSWMM and InfoSWMM SA (Standalone)
Surface Runoff Methods in InfoSWMM and InfoSWMM SA (Standalone)
InfoSWMM H2OMap SWMM InfoSWMM SA offers 12 choices for modeling surface runoff (click on link to see more information on each method):
- Nonlinear Reservoir
- The Colorado Urban Hydrograph Procedure (CUHP)
- NRCS (SCS) Dimensionless Unit Hydrograph Method
- NRCS (SCS) Triangular Unit Hydrograph
#INFOSWMM, Hydrology, InfoSWMM, InfoSWMM_SA, SWMM5
Stormwater Runoff and the Rational Method in InfoSWMM and InfoSWMM SA
Stormwater Runoff and the Rational Method in InfoSWMM and InfoSWMM SA
For storm sewer loading, the focus shifts to hydrologic analysis of excess precipitation and associated runoff. Common techniques for analysis include the rational method and unit hydrograph methods, as well as the use of more advanced hydrologic models.
For … Read the rest
#INFOSEWER, Hydrology, InfoSewer
The Colorado Urban Hydrograph Procedure in InfoSewer
The Colorado Urban Hydrograph Procedure in InfoSewer
The Colorado Urban Hydrograph Procedure (CUHP) uses the equations and procedures presented in the Urban Drainage Criteria Manual (USDCM) of the Urban Drainage and Flood Control District (UDFCD). Shape of the CUHP synthetic unit hydrograph is determined using the following equations that relate … Read the rest
#INFOSWMM, Hydrology, InfoSWMM, InfoSWMM_SA
InfoSWMM and InfoSWMM SA offer 13 choices for modeling surface runoff with Connections to Groundwater and #LIIDs
Surface Runoff in InfoSWMM and InfoSWMM SA
InfoSWMM and InfoSWMM SA offer 13 choices for modeling surface runoff (click on link to see more information on each method):
- Nonlinear Reservoir
- The Colorado Urban Hydrograph Procedure (CUHP)
- NRCS (SCS) Dimensionless Unit Hydrograph Method
- NRCS (SCS) Triangular Unit Hydrograph Method
- Delmarva Unit
Look mama. No hands! or When did hydrology become computer science?
Thanks for the interesting blog about modeling and measurements… Read the rest
General, History, Hydrology, Innovyze
AAEES 2017 Innovyze Excellence in Computational Hydraulics/Hydrology Award Presented to Dr. Qian Zhang
AAEES 2017 Innovyze Excellence in Computational Hydraulics/Hydrology Award Presented to Dr. Qian Zhang
Broomfield, Colorado, USA, May 23, 2017 – Innovyze, a leading global innovator of business analytics software and technologies for smart wet infrastructure, today announced that Dr. Qian Zhang, Research Scientist with the University of Maryland Center for … Read the rest
#INFOSWMM, Hydrology, InfoSWMM
San Diego Modified Rational Formula in InfoSWMM
San Diego Modified Rational Formula in InfoSWMM
Subject: San Diego Modified Rational Formula
San Diego Modified Rational Formula
The Rational method is a widely used technique for estimation of peak flows from urban and rural drainage basins (Maidment 1993; Mays 2001).
Stormwater modeling applications such as the design of detention … Read the rest
#INFOSWMM, Hydrology, InfoSWMM, SWMM3, SWMM4, SWMM5, SWMMLive
Graphical View of the Runoff process in #SWMM5 and #INFOSWMM
Here is a graphical view of the nonlinear runoff processes in InfoSWMM and SWMM5:
1. Three runoff surfaces
a. Impervious with Depression Storage
b. Pervious
c. Impervious without Depression Storage
2. Slope (same for all runoff surfaces)
3. Width or the Dimension of the Subcatchment (same for all runoff surfaces)… Read the rest
#INFOSWMM, Hydrology, InfoSWMM, Innovyze
… Read the rest
German Hydrology in InfoSWMM 14.5 and H2OMAP SWMM 14.5
German Hydrology in InfoSWMM 14.5 and H2OMAP SWMM 14.5
This blog describes how the German Runoff hydrology converts precipitation excess (rainfall and/or snowmelt less infiltration, evaporation, and initial abstraction) into surface runoff (overland flow). InfoSWMM is a distributed model as it allows a study area to be subdivided into any
#INFOSWMM, Hydrology, InfoSWMM, LID, Sustain
… Read the rest
Tutorial 13 How are the Costs Used in the LID Candidate Table for InfoSWMM Sustain?
Tutorial 13 How are the Costs Used in the LID Candidate Table for InfoSWMM Sustain?
There are seven type of costs associated with a LID or SuDS in InfoSWMM Sustain as shown in the following table.
| Type of Cost | Description of Cost |
| Linear Cost | Cost per linear unit of the |
#INFOSWMM, Hydrology, InfoSWMM, LID, Sustain
Tutorial 1 Creating a Simple Green Roof Optimization for InfoSWMM Sustain
Tutorial 1 Creating a Simple Green Roof Optimization for InfoSWMM Sustain
In Tutorial 1 we will use the Siting Manager to Site Green Roof LID Types for later Optimization and Export to the InfoSWMM LID Usage DB Table. Tutorial 1 is designed for first-time users of InfoSWMM Sustain and provides … Read the rest
#INFOSWMM, Hydrology, InfoSWMM, Sustain, SWMM5
Import or Export EPA SWMM 5 Files to InfoSWMM or H2OMap SWMM
Import or Export EPA SWMM 5 Files to InfoSWMM or H2OMap SWMM
Use this to import an existing EPA SWMM 5 project into InfoSWMM H2OMap SWMM , or to export InfoSWMM H2OMap SWMM project to an EPA SWMM 5 model. Up on importing EPA SWMM 5 model, InfoSWMM will create … Read the rest
#INFOSWMM, Hydrology, InfoSWMM
… Read the rest
H20Map SWMM Commands and Dialogs
H20Map SWMM Commands and Dialogs
This a table of all of the commands or Tools in H20Map SWMM along with a link to a Youtube Video showing the commands
| Category | H2OMAP SWMM | Dialog or Tool View |
| You can also look at this Youtube video to see all the dialogs in |
#INFOSWMM, Hydrology, InfoSWMM
Example 8. Combined Sewer Systems from EPA SWMM5 Applications w/InfoSWMM
Example 8. Combined Sewer Systems from EPA SWMM5 Applications w/InfoSWMM
This example demonstrates how to model systems that convey both sanitary wastewater and stormwater through the same pipes. Systems like these are known as combined sewer systems and are still quite common in older communities and cities. During periods of … Read the rest