Helping across the full stormwater spectrum: SWMM (50+ yrs), InfoSWMM/ESRI (20 yrs), InfoWorks ICM (15 yrs), & Autodesk AEC Collection (5 yrs) Grandpa (10 yrs)
December 14, 2025
There is quite … Read the rest
](https://www.linkedin.com/in/robertdickinson/)
Helping across the full stormwater spectrum: SWMM (50+ yrs), InfoSWMM/ESRI (20 yrs), InfoWorks ICM (15 yrs), & Autodesk AEC Collection (5 yrs) Grandpa (10 yrs)
December 6, 2025
This is a simple yet … Read the rest
](https://www.linkedin.com/in/robertdickinson/)
Helping across the full stormwater spectrum: SWMM (50+ yrs), InfoSWMM/ESRI (20 yrs), InfoWorks ICM (15 yrs), & Autodesk AEC Collection (5 yrs) Grandpa (10 yrs)
December 2, 2025
You may have been seeing … Read the rest
](https://www.linkedin.com/in/robertdickinson/)
Helping across the full stormwater spectrum: SWMM (50+ yrs), InfoSWMM/ESRI (20 yrs), InfoWorks ICM (15 yrs), & Autodesk AEC Collection (5 yrs) Grandpa (10 yrs)
June 11, 2025
A … Read the rest
If you’re serious about modeling, you’ll need to understand how the engine solves differential equations sooner or later. So the next time the engine does something strange, you’ll know what to look for.
Most people, I believe, are like me in that they cannot derive their intuition from equations; it … Read the rest
If you are new to modeling, very quickly you’ll find the peak flow can be different in your graph and your model results summary. How can that be, which one is correct?
The difference lies in how the peak flow is calculated. The engine keeps track of peak flow for … Read the rest
InfoWorks ICM has its own way of managing the different layers and the styles for the map of the model. It might take new users some time to get familiar with the conventions if coming from a CAD or GIS background.
GeoPlan is the main window showing the model and … Read the rest
InfoWorks is a powerful platform with thousands of functions. Ruby scripting is a great way to automate repeated or tedious modeling tasks.
However, getting started with Ruby scripting can feel quite intimidating.
If your job involves moving a lot of data in and out of ICM on a regular … Read the rest
The SWMM3 Weir Test File: A Historical Reference for Modern Hydraulic Modeling
This test file holds special historical significance in the development of stormwater modeling. Originally published in the 1981 EXTRAN 3 manual by CDM (now CDM Smith), it was specifically designed to validate orifice calculations in hydraulic networks. The … Read the rest
The SWMM3 or Extran3 Side Outlet Orifice Test File: A Historical Reference for Modern Hydraulic Modeling
This is a story about one inp file. It shows the continuity in stormwater modeling from 1980 to 2025 onwards. It is about Example 5 from the 1981 Extran Manual. This compact test case, … Read the rest
The SWMM3 or Extran3 Type 1 Pump Test File: A Historical Reference for Modern Hydraulic Modeling
This is a story about one inp file. It shows the continuity in stormwater modeling from 1980 to 2025 onwards. It is about Example 6 from the 1981 Extran Manual. This compact test case, … Read the rest
The SWMM3 or Extran3 Type 2 Pump Test File: A Historical Reference for Modern Hydraulic Modeling
This is a story about one inp file. It shows the continuity in stormwater modeling from 1980 to 2025 onwards. It is about Example 7 from the 1981 Extran Manual. This compact test case, … Read the rest
Autodesk Water Technologist for Storm Sewer and Flood | Expert in ICM InfoWorks ICM SWMM/Ruby | 18 Years at Innovyze/Autodesk | 52 Years with EPASWMM TAC for CIMM.ORG … Read the rest
This is a story about two inp files. It shows the continuity in stormwater modeling from 1980 to 2025 onwards. It is about Extran1 (free outfall) and Extran 2 (fixed backwater with a tide gate) from the 1981 Extran Manual. This compact test case, born in the era of punch … Read the rest
PostsCommentsVideosImagesMore
Loaded 128 Articles posts
[
The Many Avenues of Ruby Help in the ICM Online Help File—Hint for AI Usage
1/ Ruby Introduction In the ICM Online Help File You can print any of these pages and use them with most of the AIs. Or copy and paste the
](https://www.linkedin.com/in/robertdickinson/)
Autodesk Water Technologist for Storm Sewer and Flood | Expert in ICM InfoWorks ICM SWMM/Ruby | 18 Years at Innovyze/Autodesk | 51 Years with EPASWMM
February 9, 2025
… Read the rest1/ Ruby
 |
|
STORM WATER MANAGEMENT MODEL
QUALITY ASSURANCE REPORT:
Dynamic Wave Flow Routing
By
Lewis A. Rossman
Water Supply and Water Resources Division
National Risk Management Research Laboratory
Cincinnati, OH 45268
NATIONAL RISK MANAGEMENT RESEARCH LABORATORY
OFFICE OF RESEARCH AND DEVELOPMENT
U.S. ENVIRONMENTAL PROTECTION AGENCY
CINCINNATI, OH 45268
DISCLAIMER… Read the rest
As SWMM5 is a link node network, the area of a Storage Node is both the area of the Wet Well and typically ½ the surface area of the connecting links. There is no surface area for the Pump(s) downstream of the Wet Well (Storage) but the area of … Read the rest
