Towards Integrated Water Resources Management of the MestaNestos Catchment by HECHMS modelling Emil

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Towards Integrated Water Resources Management of
the Mesta/Nestos Catchment by HEC-HMS modelling
Emil Bournaski, Eleni Eleftheriadou, Ivan
Ivanov Yannis MylopoulosBulgarian Academy
of Sciences Aristotle University of Institute
of Water Problems, Thessaloniki, Sofia,
Bulgaria Greece
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Water has an economic value in all its competing
uses and should be realized as an economic good
(Principle 4, Dublin Conference,
1992)Integrated water resources management
should be based on the perception of water as an
integral part of the ecosystem, a natural
resource and a social and economic good (Agenda
21, chapter 18, Rio de Janeiro, 1992)
A NEW PERCEPTION OF WATER CALLS FOR NEW APPROACHES
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Water has social, economic and environmental
values and should therefore be managed so as to
realize the most acceptable and sustainable
combination of those values (Protocol on Water
and Health, 1999) Water is not a commercial
product like any other but, rather, a heritage
which must be protected, defended and treated as
such. (Water Framework Directive, 2000)
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The catchment is divided between the two
countries with the 60 of the area belonging
to Bulgaria while the rest to Greece.
The Mesta/Nestos River basin
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Beautiful uplands and great natural wealth,
biosphere reserves protected by UNESCO
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virgin forests, and delta protected by Ramsar
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The Mesta River in Bulgaria is used for
irrigation, domestic use, fishery, tourism, waste
disposal and slightly for energy production.
River Nestos in Greece is used for energy
production, irrigation, domestic use, fishery,
waste disposal and tourism purposes.
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• ISSUES FOR COOPERATION ON MESTA-NESTOS WATER
• Rational use of water
• Pollution prevention from settlements and
  industry
• Prevention of accidental water pollution
• Common water monitoring, etc.

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The TRANSCAT project deals with optimal
management of water resources in borderland
regions. It is carried out under the FP5 of
the European Commission, program Energy,
Environment and Sustainable Development, under
the RTD priority Operational management schemes
and decision support systems.
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TRANSCAT includes 5 pilot areas in Europe
TRANSCAT project is part of CATCHMOD cluster of
EC projects
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The main goal of the TRANSCAT project is to
create an operational and integrated
comprehensive Decision Support System (DSS) for
optimal water management of catchment in
borderland regions, in context of the
implementation of the EU Water Framework
Directive.
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The DSS system includes modules that allow
numerical modelling and simulation of different
natural and socio-economic conditions,
particularly hydrological and hydro-geological
modelling.
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One of the important features of the TRANSCAT DSS
system is the realization of a connection to
hydrological and hydrogeological modelling
software. It should provide services of numerical
modelling in these areas for various tasks in
water management.
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A JOINT BULGARIAN-GREEK MESTA-NESTOS GIS WAS
DEVELOPEDArcView in BulgariaMapInfo in
Greece digitizing paper maps in scale 150 000

• Contours of relief
• Rivers, Lakes and artificial dams
• River Streamflow Monitoring stations
• Settlements
• Roads
• Land cover CORINE classification
• Forests main species
• Protected areas, etc.

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Some joint maps
Bulgaria
Mesta
Nestos
Greece
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Rivers and runoff monitoring stations
Mesta
Nestos
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Hydrologic Modeling System (HEC-HMS) models
rain-fall run-off process in a river catchment
and is suitable for continuous and event
hydrologic modeling. It is developed by
Hydrologic Engineering Center (HEC) of the US
Army Corps of Engineers.http//www.hec.usace.arm
y.mil/software/hec-hms/hechms-hechms.htmlpublic
available
HEC-HMS software
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Development of a HEC-HMS 2.2.2 hydrologic model
of the Mesta-Nestos river and calibration of the
model for continuous hydrologic modeling
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We started with selecting hydro-climatic data
for calibration and verification of the
Mesta-Nestos HEC-HMS model from available
hydro-climatic records.The Bulgarian - Greek
team is conversant with the streamflow and
precipitation regimes of the Mesta-Nestos river.
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3 main steamflow monitoring stations in
Bulgarian territory Yakoruda Momina
kula Hadjidimovo similar
in Greek territory
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For model calibration and validation in Bulgaria
we have used daily values of precipitation and
streamflow measured at respective stations for
period respectively May 2001 Sept.2002 (17
months) and Jan.2003 April 2004 (16
months).Similarly in Greece daily precipitation
was used for one year (October 2000 - September
2001) from six rain gauging station in the
catchment.
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Methodologyof Mesta-Nestos HEC-HMS model
development and its calibration 4 main steps
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1Use of Mesta-Nestos GIS for estimating the
catchments hydrologic parametersInitial
caclulationParameter values for relevant
component were averaged based on area.Sub-basin
calculation Many physical characteristics vary
spatially. With the aid of the GIS,
sub-basinaverage parameter values were
calculated. 2GeoHMS (and GIS) was used to form
a background of sub-basins
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The Mesta catchment in Bulgaria was divided into
11 sub-basins in accordance with existing
geographic and hydrologic characteristics of the
pilot area by use of Mesta GIS.
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Similarly the Nestos catchment in Greece was
divided into 4 sub-basins in accordance with
existing geographic and hydrologic
characteristics by use of Nestos GIS.
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The Combined Bulgarian-Greek HEC Model of
Mesta-Nestos
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3-aHydrologic HEC sub-models used according
the peculiarity of the territory and the
available data (Bulgaria) Loss Methods Loss
rate GreenAmpt Transform (direct runoff)
Snyder Unit Hydrograph Baseflow Constant
Monthly River Reach - Muskingum-Cunge-Standard
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3-bHydrologic HEC sub-models used according
the peculiarity of the territory and the
available data (Greece) Loss Methods
Initial and Constant Rate Loss Method Transform
Soil Conservation Service (SCS) Unit
Hydrograph Baseflow Constant Monthly River
Reach Lag Model
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4Calibration of the Mesta-Nestos HEC-HMS model
Both manual and automated calibrated methods
were used in this study
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We consider the HEC model validation as a process
of demonstrating that the site-specific model is
capable of making accurate predictions for
periods outside a calibrationperiod.
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Results
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Results
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Results
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CONCLUSIONS This study demonstrates that a
suitable HEC-HMS hydrologic model of the
Mesta/Nestos river can be developed and
parameters for relevant submodels can be derived
from historic streamflow and precipitation
records and GIS databases of the territory. It
can be used in the integrated water resources
management of the Mesta/Nestos river and in
relevant DSS.
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TRANSCAT project http//www.transcat-projects.net
 only in Bulgarian languagehttp//www.iwp.bas.
bg/projects/transcat/index.htm cTD system can
be seen onhttp//transcat.vsb.cz Thank you for
your attention.