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Hydrologic Engineering Center 

IntroducingHEC-ResSim 3.1

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Outline

Program Overview

Basic Concepts & Terms

Program Structure

Files and Directories

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Is called a watershedbecause it represents allor part of a watershed.

It includes all the datathat defines the ReservoirSystem being studied.

It is stored in a directory

tree, not in a single file orfolder.

An HEC-ResSim Project…

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Modules

ResSim’s Three Parts…

Watershed Setup

“the big picture” 

Reservoir Network

“the details” 

Simulation

“the analysis” 

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Activities…

Create watershed

Draw streamalignment

Place elements Reservoirs

Diversions

Computation Points

Impact Areas

Etc.

Defineconfigurations

 Watershed Setup Module

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 Watershed Setup - Menus

File

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Edit

 Watershed Setup - Menus

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View

 Watershed Setup - Menus

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 Watershed Setup - Menus

Watershed

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 Watershed Setup - Menus

Reports

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 Watershed Setup - Menus

Tools

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Help

 Watershed Setup - Menus

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Watershed Folders & Files

maps Folder

Shapefiles, dlgs, dems,…

study Folder

 Watershed “setup” files…

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Reservoir Network Module

Activities… Establish

Connectivity

Reservoirs

Diverted Outlets

Reaches Junctions

Diversions

Define theelements Physical

Properties

OperationSchemes

CreateAlternatives

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Edit

Reservoir Network - Menus

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Network

Reservoir Network - Menus

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Alternative

Reservoir Network - Menus

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Reports

Reservoir Network - Menus

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Network files…

rss Folder

Network Files

.rsys

.dbf, .dbt, .mdx

.dss

Alternative Files

.ralt, .fits, .malt

Simulation Folders

.simperiod .simrun

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Simulation Module

Activities…

Create a Simulation

Identify Time Window

Select Alternatives

Compute

Analyze Results

Review Plots & Reports

Create Custom Output

Make Adjustments

Edit the model Perform Overrides

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Edit

Simulation - Menus

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Simulation

Simulation - Menus

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Reports

Simulation - Menus

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Simulation files…

the Simulation

folder…

Looks like a copy

of the watershed

tree

 simulation.dss

Files of selected

alternatives

(in rss subfolder)

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Points to Remember

An HEC-ResSim project is a “watershed”

A watershed encompasses a tree of files and

folders

The ResSim program has three parts calledmodules: Watershed Setup, Network, and

Simulation

Menus can change with each module.

The files created and used in each module are

stored in different places of the watershed