Objectives

The course provides an introduction to the Hydrologic Modeling System, HEC-HMS, focusing both on using the program and performing watershed studies. The course starts with a summary and overview of the program and the mechanics of constructing watershed models. Then, components of the software are studied in detail. Major modules include GIS tools, data entry, historic precipitation approaches, computing infiltration and excess surface runoff, transforming excess precipitation to runoff, baseflow, and channel routing. Parameter estimation techniques are taught throughout with instruction about model calibration. Instruction material is supported with workshops that illustrate the basic steps of building a model for project applications.

The table below provides the schedule of instruction. Links to lectures, workshop pages located in the HEC-HMS Tutorials and Guides spaces are provided. All workshop files can be downloaded from the workshops pages. The Asynchronous table contain additional content and workshops. We highly suggest watching the YouTube video and reviewing the workshop as part of the course. You will need HEC-HMS version 4.12 or newer and HEC-DSSVue version 3.3.29 to open the workshop files. You can download the software from https://www.hec.usace.army.mil/software/hec-hms/downloads.aspx and https://www.hec.usace.army.mil/software/hec-dssvue/downloads.aspx.

Instructors

Dr. Jay Pak
David Ho

Asynchronous

Topic	Notes	Links to Materials	Supplementary Pre-recorded Lectures	Presentation Slides
HEC-HMS GIS Parameter Estimation Tools			HEC-HMS Parameter Estimation Tools Playlist	HEC-HMS_GIS_Delineation Tools.pptx
Applying HEC-HMS GIS Parameter Estimation Tools		Introduction Computing Subbasin and Reach Characteristics Estimating Parameters with GIS datasets
Model Calibration - Complex Studies				Advanced_Model_Calibration.pptx
Project	Final Project Working Session - Develop a Calibrated Model From Scratch	Basic HEC-HMS Class Final Project

Monday

Start	End	Duration (min)	Module	Topic	Instructor(s)	Links to Materials	Presentation Slides	Supplementary Pre-recorded Lectures
13:00	13:15	15	Admin	Welcome, Goals, Class Structure	David		Admin.pptx
13:15	14:00	45	L 1	Introduction to HEC-HMS L1_Introduction_to_HEC-HMS.pptx	Jay		L1_Introduction_to_HEC-HMS.pptx	Overview of Hydrologic Modeling for Studies Introduction to HEC-HMS Playlist
14:00	15:00	60	W 1	Creating a Simple Model	Jay	Creating a Simple Model
15:00	15:15	15	R 1	Review W 1	Jay
15:15	16:00	45	L 2	Shared Data Components	David		L2_Shared Data Components_2024.pptx	HEC-HMS Shared Data Components Playlist
16:00	16:45	45	W 2	Creating Shared Data Components	David	Introduction to Shared Component Data
16:45	17:00	15	R 2	Review W 2

Tuesday

Start	End	Duration (min)	Module	Topic	Instructor(s)	Links to Materials	Presentation Slides	Supplementary Pre-recorded Lectures
08:00	08:45	45	L 3	HEC-HMS GIS Delineation Tools	Jay		L3_HEC-HMS_GIS_Delineation Tools.pptx	HEC-HMS GIS Delineation Tools
08:45	10:00	75	W 3	Applying HEC-HMS GIS Delineation Tools	Jay	Creating a Georeferenced Model Using HEC-HMS GIS Tools
10:00	10:15	15	R 3	Review W 3	Jay
10:15	10:30	15		Break
10:30	11:15	45	L 4	Meteorological Models - Historic Precipitation	David		L4_Meteorologic_Models_2024.pptx	HEC-HMS Meteorologic Models Playlist
11:15	12:15	60	W 4	Setting up a Meteorological Model	David	Introduction Gage Weights Precipitation Method Gridded Precipitation Method Optional Tasks Creating an Inverse Distance Precipitation Model Using a Single Gage within the Interpolated Grid Option
12:15	13:15	60		Lunch
13:15	13:30	15	R 4	Review Meteorological Models - Historic Precipitation	David
13:30	14:15	45	L 5	Loss Rate Methods	Jay		L5_Loss_Methods.pptx	HEC-HMS Loss Rate Methods Playlist
14:15	14:30	15		Break
14:30	15:30	60	W 5	Applying Loss Methods	Jay	Introduction to the Loss Rate Tutorials Applying the Initial and Constant Loss Method Applying the Green and Ampt Loss Method Applying the Deficit and Constant Loss Method
15:30	15:45	15	R 5	Review W 5	Jay
15:45	16:30	45	L 6	Transform Methods	David		L6_Transform_Methods_2024.pptx	HEC-HMS Transform Methods Playlist
16:30	16:45		L1, L2, L3	Quiz L1, L2, L3

Wednesday

Start	End	Duration (min)	Module	Topic	Instructor(s)	Links to Materials	Presentation Slides	Supplementary Pre-recorded Lectures
08:00	09:00	60	W 6	Estimating Clark Unit Hydrograph Parameters	David	Introduction Estimating Time of Concentration and Storage Coefficient Time and Concentration and Storage Coefficient Impacts to the Hydrograph
09:00	09:15	15	R 6	Review W 6	David
09:15	10:00	45	L 7	Baseflow Simulation	Jay		L7_Baseflow_Methods.pptx	HEC-HMS Baseflow Methods Playlist
10:00	10:15	15		Break
10:15	11:15	60	W 7	Applying Linear Reservoir Baseflow	Jay	Introduction Applying the Linear Reservoir Baseflow Method Applying the Recession Baseflow Method
11:15	11:30	15	R 7	Review W 7	Jay
11:30	12:30			Lunch
12:30	13:15	45	L 8	Channel Routing	David		L8_Open_Channel_Flow_within_HEC-HMS 2024.pptx	HEC-HMS Channel Routing Methods Playlist
13:15	14:15	60	W 8	Applying Reach Routing Methods	David	Introduction Applying the Lag Routing Method Applying the Muskingum Routing Method Applying the Muskingum-Cunge Routing Method
14:15	14:30	15	R 8	Review W 8	David
14:30	14:45			Break
14:45	15:30	45	L 9	Model Calibration	Jay		L9_ Model Calibration.pptx	HEC-HMS Model Calibration Playlist
15:30	16:30	60	W 9	Calibrating a Simple Model	Jay	Introduction Populate Initial Parameters Calibrate a Basin Model to Event 1 Calibrate a Basin Model to Event 2
16:30	16:45			Review W 9
16:45	17:00	15	Q 7, 8, 9	Quiz covering L 7, L 8, L 9	Jay

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Hydrologic Modeling with HEC-HMS 3-day