INFOWORKS ICM Modeling Standards, Practices, and Guidelines - Denver Department of Transportation and Infrastructure - May 2026

Oct 28, 2026

INFOWORKS ICM Modeling Standards, Practices, and Guidelines for the Denver Department of Transportation and Infrastructure establishes consistent methods for hydraulic and hydrologic modeling using InfoWorks ICM. The change-log and acknowledgements document supporting references and contributors. The guide outlines a modeling approach, database structure, data sources, governing assumptions, and recommended workflow, then specifies hydraulic modeling for 1D subsurface networks and 2D surface and hydrology, including nodes, pipes, geometry parameters, infiltration and zone setup, and key 1D-2D interaction concepts.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages76

Reading Time3 h 12 min

AccessFree to download

Change Log

Acknowledgements

Table of Contents

Tables

Figures

Abbreviations & Acronyms

1.0. Introduction

2.0. Modeling Approach Overview

2.1. InfoWorks ICM Database Structure

2.2. Data Sources

2.3. Governing Assumptions

2.4. Recommended Workflow

3.0. Hydraulic Modeling – 1D Subsurface Network

3.1. Manholes, Surface Inlets, and other Nodes

3.2. Sub-surface Pipes

4.0. 2D Surface and Hydrology

4.1. 2D Zone

4.2. Infiltration Zone

INFOWORKS ICM MODELING STANDARDS, PRACTICES, AND GUIDELINES Denver Department of Transportation and Infrastructure May 2026 CHANGE LOG This InfoWorks ICM Modeling Standards, Practices, and Guidelines document is intended to supplement the 2025 Hydraulic and Hydrologic Modeling Guidance technical memorandum (Stantec, 2025) and the Guidance for 2D Storm Drainage Modeling and Deliverables report (CCD, 2026) . ACKNOWLEDGEMENTS The City and County of Denver team wishes to acknowledge the various individuals and organizations who contributed to the preparation of this InfoWorks ICM Modeling Standard, Practices, and Guidelines document: Stantec Consulting Service Patrick Flynn, PE Josephine Sajbel, GISP Thomas Lewis, PMP Lila Fehr, PE Jeni Li, EIT Denver Department of Transportation and Infrastructure Jun Meng, PE, CFM Angelica Makuch, PE, CFM Chris Best, PE Kelly Crum, PE Kimberley Pirri, PE, CFM Ingrid Petterson, PE Brenden Marron, PE Robin Hegedus, PE The City and County of Denver would like to gratefully acknowledge the following individuals and organizations for their collaboration and feedback during the development of these guidelines. Michael Baker International Sarah Pfeifle, PE Sean Abel, PE, CFM Mile High Flood District David Anderson, PE, CFM Brik Zivkovich, PE, CFM TABLE OF CONTENTS CHANGE LOG ............................................................................................................................... i ACKNOWLEDGEMENTS ............................................................................................................... ii TABLE OF CONTENTS .................................................................................................................. iii TABLES ........................................................................................................................................ v FIGURES...................................................................................................................................... v Abbreviations & Acronyms .......................................................................................................... vii 1.0. Introduction .....................................................................................................................1 2.0. Modeling Approach Overview ............................................................................................3 2.1. InfoWorks ICM Database Structure ...................................................................................3 2.2. Data Sources ...................................................................................................................5 2.2.1. City and County of Denver GIS Data ....................................................................................5 2.2.2. Denver Regional Council of Governments Regional Data Catalog .........................................6 2.2.3. Additional Data Sources .....................................................................................................6 2.3. Governing Assumptions ....................................................................................................7 2.4. Recommended Workflow ............................................................................................... 17 3.0. Hydraulic Modeling – 1D Subsurface Network..................................................................19 3.1. Manholes, Surface Inlets, and other Nodes .....................................................................20 3.1.1. Importing GIS Assets ........................................................................................................20 3.1.2. Node Type ........................................................................................................................20 3.1.3. 1D-2D Interaction .......................................................................

FAQs

What is the purpose of the InfoWorks ICM Modeling Standards, Practices, and Guidelines document?

It provides standards, practices, and guidelines intended to supplement related hydraulic and hydrologic modeling guidance for use with InfoWorks ICM.

What topics are covered in the modeling approach overview?

It covers the InfoWorks ICM database structure, data sources, governing assumptions, and a recommended workflow.

How does the document structure hydraulic and hydrologic modeling guidance?

It separates guidance for 1D subsurface networks (including nodes and subsurface pipes) and 2D surface and hydrology (including 2D zones and infiltration zones).

Oct 28, 2026

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