Hydrology

Posts about runoff, groundwater, infiltration, RDII etc

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
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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):

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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

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

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

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

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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

Infiltration Trench LID Control for #LID’s in #SWMM5 and #InfoSWMM

Infiltration Trench LID Control for #LID’s in #SWMM5 and #InfoSWMM

This is an introduction along with images of the LID Control and data require3ments in InfoSWMM. Every InfoSWMM Control uses from one to 5 layers of data – each with different data requirements. You can use the Siting Manger of … Read the rest

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