2014 AWRA Spring Specialty Conference - GIS and Water Resources VIII
Workshop #1



GIS Support for Hydrologic and Hydraulic Analyses

Sunday, May 11, 2014 8:00AM to 5:00PM

Dean Djokic, Ph.D., Esri Inc.
Peter J. Singhofen, P.E., Streamline Technologies


Cost: $95.00

Dean Djokic, Ph.D.
Water Resources Practice Manager
Esri Inc.
Redlands, CA 92373

Dr. Djokic is water resources practice manager for ESRI's Professional Services Division that develops Arc Hydro, HEC-GeoRAS and HEC-GeoHMS. He specializes in water, sewer, storm, and water resources GIS implementations. He is also involved in water resources development and marketing at the corporate level. As an applications designer and programmer, Dr. Djokic designs and develops GIS-based custom water resources solutions. He has extensive experience in developing GIS applications for water/wastewater and environmental resource management, particularly applications related to hydrology and hydraulics. He has an in-depth understanding of GIS and water resources that enables him to ensure that applications meet engineering requirements. Dr. Djokic has developed GIS implementation plans for several water resources agencies. The plans present an efficient and practical approach to GIS implementation and utilization in particular agency environment. He has also developed and is conducting Arc Hydro and Hydrologic and Hydraulic Modeling Using GIS classes, which present the database design, tools, and techniques for the successful implementation of GIS technology for various aspects of water resources analyses.

Peter J. Singhofen, P.E.
Streamline Technologies Inc.
Winter Springs, FL 32708

Mr. Singhofen is the president, founder and owner of Streamline Technologies, Inc., an engineering software development firm located in Winter Springs, Florida. Mr. Singhofen has been a water resources professional for over 30 years specializing in the integrated modeling of large-scale surface and groundwater systems. He has developed modeling techniques and software products that are used by thousands of engineers across the State of Florida and the United States.

Title: GIS Support for Hydrologic and Hydraulic Analyses

Objectives: Understand the key concepts in GIS support for 1D and 2D hydrologic and hydraulic modeling:

  • Differences in terrain processing for hydrologic and hydraulic analyses and for 1D and 2D modeling approaches.
  • Drainage system determination and characterization.
  • Integration of natural and man-made drainage systems into a single modeling unit.
  • Derivation of 1D and 2D H&H modeling elements: pre- and post-processing.
  • GIS as model integration and automation infrastructure.
  • Roles of GIS and numerical models - single GIS environment - support for many H&H models and follow-up analyses.

Background: As a technology for spatial data storage, processing, and visualization, GIS offers many capabilities that can be used to support 1D and 2D H&H modeling. This workshop presents GIS techniques that can be used for terrain analyses, spatial and temporal integration, hydrologic and hydraulic characteristics extraction, 1D and 2D numerical model input and output, modeling process automation, and result mapping. Esri's Arc Hydro, HEC's RAS, HMS, GeoRAS, and GeoHMS, and Streamline Technology's ICPR 4G will be used to demonstrate the key concepts and capabilities.


  • Review of spatial data for H&H analyses.
  • Representation of built and natural environments in GIS and numerical models.
  • Arc Hydro for terrain preprocessing and developing GIS infrastructure for H&H modeling support
  • Principles of model integration.
  • USGS Streamstats - GIS for statistical hydrology (peak and low flows).
  • HEC-HMS and HEC-GeoHMS - GIS and deterministic hydrology.
  • HEC-RAS and HEC-GeoRAS - GIS and 1D hydraulic modeling.
  • 2D integrated hydrologic and hydraulic modeling - ICPR 4G.
  • GIS for operational and design automation.

Outcomes: The expected outcomes from the workshop are that participants will understand the fundamental principles of GIS and H&H modeling integration, will see GIS and modeling tools in action, will gain appreciation for what GIS can and cannot do for modeling, understand differences in 1D and 2D modeling support, and understand the GIS and model limitations with respect to quality of supporting data.

Attendee Requirements: The target audience includes hydrologists, water resources engineers and managers, GIS analysts, and anyone interested in learning what GIS can do for H&H data collection, preparation, model assembly, and result processing. Attendees should have some background in GIS and/or H&H modeling. The participants will not be using computers during the workshop, so experience with particular GIS or modeling software is not required.

Number of Students: The number of students will be limited to 40 and will be enrolled in the order of their registration.

Schedule: (Subject to modification)
8:00 a.m. Introduction
8:10 Introduction to GIS and data sources for H&H modeling
9:00 Arc Hydro - the backbone for H&H modeling support
10:00 Break
10:15 Arc Hydro tools in action: from integrated terrain representation to modeling schematics

12:00 Lunch on your own

1:00 p.m. Statistical hydrologic modeling: USGS StreamStats
1:30 1D deterministic hydrologic and hydraulic modeling: HEC-GeoHMS/HMS and HEC-GeoRAS/RAS
2:30 Process integration and automation - web services
2:45 Break
3:00 2D integrated hydrologic and hydraulic modeling: ICPR 4G
4:45 Workshop summary
5:00 Adjourn

Equipment: LCD Projector, Flip chart. Students do not need to bring their equipment.