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Download page Post-Wildfire Debris Flow Modeling with HEC-HMS (2023).
Post-Wildfire Debris Flow Modeling with HEC-HMS (2023)
The objective of this training material is to provide modelers information and examples for modeling the hydrologic response and estimate debris and sediment loads using the HEC-HMS software. Topics presented will include: and . Each participant will have the opportunity to prepare model input and analyze model output during course workshops. Links are provided to the workshop pages located in the HEC-HMS Tutorials and Guides space. All workshop files can be downloaded from the workshops pages as well. Finally, all PowerPoint files are included below and can be downloaded for reference. You will need HEC-HMS version 4.11 beta 16 to open the workshop files. You can download the software from https://www.hec.usace.army.mil/software/hec-hms/downloads.aspx.
An archived copy of all the workshop instructions (Workshops) and presentation files (Presentation) can be downloaded from here: .
| Lectures and Workshops | Workshop Links | PowerPoint Files |
|---|---|---|
Lecture 1: Overview of Hydrologic Modeling in HEC-HMS Discussion about different modeling methods in HEC-HMS, Hypothetical Storm development, and continuous simulation. | ||
Lecture 2: Overview of Post-Wildfire Hydrology and Debris Flow Modeling Applications Discussion of the ways post-wildfire hydrology and debris yield modeling is used in studies including post-wildfire assessments, debris yield prediction, and post-wildfire flow risk and emergency management. | ||
Lecture 3: Subbasin Debris Yield Analysis Introduction to five debris yield methods for debris yield assessment in burned mountain watershed. Discussion of appropriate use and parameter estimation. | ||
Workshop 1: Quick Debris Yield Modeling based on Field Data Estimate the parameters for each debris yield method. Enter the initial parameter values within a basin model, create a simulation run, and compute the simulation. Calibrate and compare results to measured sample data. | ||
Lecture 4: Debris Reservoir Routing Analysis Discussion of modeling rainfall, infiltration, runoff transform, and baseflow methods focused towards PMF level events. Overview of reservoir routing options within HEC-HMS | Explanation of the physical reservoir volume reduction processes at reservoir. The reservoir sediment trap efficiency is affected by the detention time of storm runoff and by factors governing sediment particle size. | |
Workshop 2: Estimating Debris Yield in Debris Basin Practice calibrating debris yield modeling without/with Debris Reservoir/Basin and compare results with measured data. | ||
Lecture 5: Debris Channel Routing Analysis Introduction of the new debris transport potential method (Sediment Delivery Ratio) and debris routing method (Muskingum) to erosion and deposition processes in the channel. | ||
Workshop 3: Debris Flow Modeling using Debris Channel Routing Method Finalize HMS debris flow model using debris methods in subbasin, and channel elements. Calibrate and compare results to measured sample data. | Task 4: Debris Flow Modeling using Debris Channel Routing Method | |
Lecture 6: Post-Wildfire Hydrologic Analysis Explanation of a surface dynamic infiltration loss method to develop a long-term post-wildfire hydrologic model for a burned watershed. Discussion of the physical basis for the parameters and procedures for post-wildfire effect. | ||
Workshop 4: Post-Wildfire Hydrology Analysis using Surface Dynamic Infiltration Loss Method Use a surface dynamic infiltration loss method to estimate parameters for the long-term post-wildfire hydrology model. Practice calibrating model and compare results with observed flow (gage data). | Applying the Dynamic Surface | Pak and Lee Method for Post-wildfire Hydrologic Modeling Parameterize the Dynamic Surface Method and Compute a Simulation Calibrate the Dynamic Surface Method Parameters Comparison of Post-fire Simulations with and without Dynamic Surface |