I've been exploring an unusual intersection: hyperbolic geometry and hydrological modeling. The result is a web-based tool that generates subcatchment tessellations for EPA SWMM5 using Möbius transformations on the Poincaré disc. It looks visually interesting, the exported work as test models … Read the rest
The problem with using 50 year old simple models or even test models that started out as real models as we did in the SWMM5 redevelopment project are they are too nice for the most (with exceptions). This app uses strange attractors to make complex visually interesting models that look … Read the rest
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
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 an app that I always wanted to make … 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)
November 30, … 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)
August 8, 2025
Introduction
As … 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)
July 28, 2025
Are you a … 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)
May 13, 2025
Introduction
Bridging Decades with AI … Read the rest
](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 | 52 Years with EPASWMM TAC for CIMM.ORG SWMM5+
April 18, 2025
This … 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
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