Case Study of the Flood Controlby the Water Management System

on the River Ohře.

Jiří Sovina,Department of Applied Geoinformatics and Spatial Planning,

Faculty of Environmental Sciences, Czech University of Life Sciences in Prague

WATER POLICY 2009

HEC-ResSim 3.0

The HEC-ResSim 3.0 is released as a freeware. The user must agree to the given termsand conditions. The HEC-ResSim was developed at the:

US Army Corps of Engineers (USACE), Hydrologic Engineering Center,

Source:

www.hec.usace.army.mil

On the occasion of the Dispatchers' Games held in November 2008 at the premises ofthe Ohře River Basin Authority, state enterprise, in Chomutov, the model of the watermanagement system control created at the Czech University of Life Sciences wastested. The model was formed with the help of the HEC-ResSim 3.0 program which iscurrently used, among others, for the students instruction in the lectures on hydroinformatics

For the sake of the presentation, the real historical flood data were selected, with theflood passage somewhat increased, in order to demonstrate enhanced impact at theflood region. The result of the attempt ought to have been to define the most effectiveflood control by means of the appropriate operations on the reservoir system Skalka, Jesenice, Horka, Březová, Stanovice and Nechranice.

This model was biuld in connection with the work on the grant project reg. n. 103/07/1620.

HEC-ResSim 3.0 The Ohře river basin:

HEC-ResSim 3.0

Module Concept:

HEC-ResSim 3.0The map basis, working with layers

(ESRI Shape-file) source: DMÚ 25, DIBAVOD

HEC-ResSim 3.0The map basis,

Visibility of the conture lines in the scale below 1 : 25 000

HEC-ResSim 3.0

Formats supported by

HEC ResSim:

Auto CAD .dxf

Rastr .img, .gif, .jpg

USGS .dlg, .dem

(US geological survey)

ASCI NetTIN .net

ArcInfo ® DEM . asc

For instance the

background map from

Google Earth (jpg) used

in the south-west part

of wateshed.

HEC-ResSim 3.0

Using ESRI Shape–file as a bacground map is possible to import selected lines

as the stream objects of the watershed directly to the watershed model.

And another watershed elements can be created:

Node

Junction

Resrvoir

Levee

Diversion

Computation point

Channel modification

Off-Channel Storage Area

Impact Area

Other project

Time-Series Icon

Watershed setup

HEC-ResSim 3.0The Reservoir Network Module provides the tools that can be used to develop

components such as the reservoirs and reaches, to set their connectivity and

properties:

Reservoir network

Routing Reaches

Resrvoirs

Diverted Outlet

Diversions

The Junction is beeing created automaticaly

HEC-ResSim 3.0 Reservoir network – on the screen

HEC-ResSim 3.0 The charakteristic of the reservoir

HEC-ResSim 3.0 Objects of the dam

Controlled Outlet

Uncontrolled

Outlet

Outlet Group

Power Plant

Pump

Tailwater Elevation

Leakage

For instance the bottom outlet of the Nechranice dam

HEC-ResSim 3.0 The rules

HEC-ResSim 3.0 The rules

HEC-ResSim 3.0 The rules

The management rules that are at disposal for the waterworks can be principally

divided into:

The rules for the release function that can be defined for the resrvoirs as a whole, for the

dam objels en masse, with the selection of priorities in their usage (e.g. the precedence of the

water power plants) and understandably for the individual manageable spillways, outlets and

take-offs (eventually their user-defined groups).

The rules dependent on the flow rate in the given profile under the waterwork (the

downstream control function), defined for the waterwork as a whole.

The tandem operations ensuring optimalization in the capacity usage on the waterworks

cascade.

The rules for the extreme flood situations (Induced Surcharge).

The rules dependent on the velocity of the changes in other data, for example inlet,

outlet, movement of the water level.

The management rules for pumping stations and power plants with the possibility of

entering several levels of time harmonograms and other specific rules.

The script-defined management rules. These can be designed above all for special

procedures of the outlet control. ResSim 3.0 has been recently equipped with the script editor

using the syntax of the Jython language.

HEC-ResSim 3.0 The rules

Logical constructions

using If-blocks:

The final rule:

HEC-ResSim 3.0 Alternative EditorT

he

co

nn

ecti

on

of

the

tim

eseri

es

data

(dss

file

)

HEC-ResSim 3.0 Setting up the simulation

Definování simulace: Spuštění simulace:

HEC-ResSim 3.0Simulation Results

HEC-ResSim 3.0

Simulation Results

HEC-ResSim 3.0Simulation Results

HEC-ResSim 3.0 The Dispatchers' Games 2008

HEC-ResSim 3.0

Conclusion:

At the conclusion, we can state that the mathematical model of the WMS of the

Ohře river basin performed by the HEC-ResSim 3.0 program, fully proved its

functionality and practical usability. HEC-ResSim proved to be a very productive

modelling instrument with the perspective of a wide use, and freely accessible, at

that. It was found suitable for the development and research purposes and for the

school instruction on hydroinformatics.

THANK YOU FOR YOUR ATTENTION.