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The Hydrologic Modeling System (HEC-HMS) is a free program developed by the US Corps of Engineers that implements a series of hydrological methods to represent different physical processes of the water cycle.

HEC-HMS also includes procedures necessary for continuous simulation including evapotranspiration, infiltration, hydrological routing and soil moisture accounting. The tools and options of HEC HMS make it a very versatile and powerful software for the hydrological simulation of different scenarios such as extreme events in arid regions, or water balances in wet climates.

Hatarilabs offers the online course of Hydrological Modeling with HEC-HMS for students and professionals of any country. The course is focused on theory and practical to know the different HEC-HMS tools and its application to the hydrological modeling.

Objectives:

  • Know the HEC HMS environment.
  • Learn concepts about the water cycle, precipitation-runoff processes and water balance.
  • Understand the mechanism of the HEC-HMS tools.
  • Simulate hydrological models in watersheds.

Trainer

Saul Montoya M.Sc. 

Saul Montoya M.Sc. is a Hydrogeologist and Numerical Modeler. Mr. Montoya is a Civil Engineer graduated from the Catholic University in Lima with postgraduate studies in Management and Engineering of Water Resources (WAREM Program) from Stuttgart University – Germany with mention in Groundwater Engineering and Hydroinformatics. Mr Montoya has a strong analytical capacity for the interpretation, conceptualization and modeling of the surface and underground water cycle and their interaction. 

He is in charge of numerical modeling for contaminant transport and remediation systems of contaminated sites. Inside his hydrological and hydrogeological investigations Mr. Montoya has developed a holistic comprehension of the water cycle, understanding and quantifying the main hydrological dynamic process of precipitation, runoff, evaporation and recharge to the groundwater system. 

Over the last 9 years Saul has developed 2 websites for knowledge sharing in water resources: www.gidahatari.com (Spanish) and www.hatarilabs.com (English) that have become relevant due to its applied tutorials on groundwater modeling, spatial analysis and computational fluid mechanics.

Materials HEC-HMS

Session 01: Introduction to HEC HMS

In this session we learn about the water cycle. The we proceed to the installation HEC HMS 4.8 and introduction to HEC HMS 4.8. After that, we check an overview of the HEC HMS model. Then we construct a basic hydrological model where we analyze the hydrological components of the watershed and simulation of the model.

Lessons

Video of Session 01 Preview

Session 02: Creation of a model of the basin with HEC-HMS

In this session we learn about watershed modeling. In the practical part we create a model of the basin divided on two sub-basins (high and low part) where we set up and simulate the hydrologic response of 8 hour storms over a 20 hour period.

Lessons

Video of Session 02

Session 03: Construction of a Daily the hydrological model divided on 3 sub-basins

In this session we learn about the runoff generation from precipitation. In the practical part we construct an hydrological model divided on 3 sub-basins where we set up data for the Loss, Transform and Baseflow methods specifying hyetograph of each sub-basins.

Lessons

Video of Session 03

Session 04: Analysis of flow for return periods of 100 and 500 years

In this session we learn about the hydrological routing in HEC-HMS. We create a basin model with 3 sub-basins setting up the Muskingum routing method. Also we calculate hydrographs associated with a return period in a basin. The flow of avenues is defined for a return period of 100 and 500 years.

Lessons

Video of Session 04

Session 05: Base flow hydrological model and hydrological model with a reservoir

In this session we develop 2 models. First we develop a base flow hydrological model in a micro-basin with the HEC-HMS software that cover the setting up Loss method as Soil Moisture Accounting according to physical properties: Field capacity, wilting point and the infiltration speed and implementation the parameters Clark Unit Hydrograph: Time of Concentration and Storage Coefficient. In the second model, we insert data type like Storage-Discharge Functions and temporal rainfall information for analyze flow and storage results of reservoir.

Lessons

Video of Session 05

Session 06: Hydrological model in a sub-basin differentiating the main tributaries.

In this session we set up data for Loss, Transform and Baseflow methods and insert data observed flow of each hydrological element to implement an optimization trial to estimate parameters: SCS Unit Hydrograph – Lag Time and SCS Curve Number – Initial Abstraction.

Lessons

Video of Session 06

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