The document discusses the creation of a geographic database for the upper Nishava catchment area. A GIS platform was established including ArcGIS software. The database includes spatial data on boundaries, rivers, infrastructure, climate, land use, and more. Layers were created from various sources and formats. Maps were produced showing potential population, environmental, and transportation risks from flooding in the catchment area, including specific maps for the towns of Godech and Dimitrovgrad.

1. IPA CBC Programme Bulgaria - Serbia
CREATION OF SPATIAL DATA BASE FOR UPPER NISHAVA CATCHMENT
The preparation of a geographical database for the upper Nishava catchment is a
major task in the creation of a digital terrain model and flood hazard and risk maps.
Design of a GIS database Basin Nishava
GIS platform: a specialized GIS platform has been created for the purposes of this
project, which includes integrated hardware and software components. ArcGIS 10
single user software has been installed and brought into operation.
The life cycle of this database for the project includes two main steps:
1) preliminary analysis and design
2) implementation and operation of the database.
The next stage of the development of the target GIS database includes logical
organization of data, carried out according to the capabilities of the GIS software and
above all the specifications used in its management system databases.
There are a number of additional requirements for the design of a GIS database,
which applies to all stages of its development. They mainly concern the
standardization of data (data format, their accuracy and quality must conform to
certain standards), to control the operations related to the introduction, deleting,
editing and updating data, the need to protect copyright data and information
procedures to prevent unauthorized access to GIS databases, etc.
The data is subjected to the so-called pre-processing procedures. Then proceed to
georeferenced data
The following activities are associated with defining the procedures for converting the
data, which include:
• Data conversion from analog to digital format (digitizing);
• Control changes resulting from the conversion.
The developed database is in Personal geodatabase format, according to the most
common type:
EUROPEAN UNION
Bulgaria – Serbia IPA Cross-border Programme
“Assessment of flood risk – a base for sustainable development in upper part of Nishava
catchment”
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2. IPA CBC Programme Bulgaria - Serbia
The contents of the database:
Section - Geographical location and boundaries of the catchment includes spatial
information about:
 boundaries of catchment area;
 river system;
 dams and lakes in the catchment area.
Section - Information security includes spatial information about:
• gauging stations and departmental backbone network;
• weather stations and rain from the backbone and the departmental network.
Section - Natural factors include spatial information about:
• Climatic factors - average annual rainfall
• Landscape factors - the geological structure, topography, soil cover,
vegetation cover, protected natural areas /Birds Directive and Habitats
Directive /
Section - Anthropogenic factors include spatial information about:
• Map of the districts and municipalities within Nishava river basin
• Settlements network
• Industrial and commercial sites in the Basin Nishava / Corine 2006 /
• Land use / Corine Corine 2000 and 2006 with excel spreadsheet for areas of
different categories for 2000 and 2006 /;
EUROPEAN UNION
Bulgaria – Serbia IPA Cross-border Programme
“Assessment of flood risk – a base for sustainable development in upper part of Nishava
catchment”
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3. IPA CBC Programme Bulgaria - Serbia
• Transport infrastructure - road and railway network
№ Layer Source Actuality Form
• Cultural sites of national and local significance
Section - Protective measures - dikes, and others. facilities;
Table 1: Structure of the Geodatabase
EUROPEAN UNION
Bulgaria – Serbia IPA Cross-border Programme
“Assessment of flood risk – a base for sustainable development in upper part of Nishava
catchment”
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4. IPA CBC Programme Bulgaria - Serbia
1 Maps М 1:50 000-Bulgaria Internet 1980-1990 raster
2 Maps М 1:50 000- Serbia Internet 1966 raster
3 Maps М 1:25 000- Bulgaria Archive Geographica 1980-1992 raster
Ltd.
4 Maps М 1:25 000- Serbia Archive Geographica 1971 raster
Ltd.
5 Maps М 1:5000- Bulgaria Archive Geographica 1970-1972 raster
Ltd.
6 Cadastre Map М 1:1000 of Contract Authority - raster
Godech town
7 Cadastre Map М 1:1000 of Contract Authority 1985 raster
Tuden Village
8 Cadastre Map М 1:1000 of Contract Authority - raster
Dimitrovgrad town
9 Cadastre Map М 1:2500 of Contract Authority - raster
Dimitrovgrad town
10 Ortophotomap of Bulgaria Internet 2006 raster
11 Ortophotomap of Contract Authority 2007 raster
Dimitrovgrad
12 Geological map М 1:100 000 Archive Geographica 1992 raster
Ltd
13 Geological map М 1:100 000 Archive Geographica 1992 vector
Ltd
14 Satellite image Archive Geographica 2008-2011 raster
Ltd
15 Municipality Borders – Archive Geographica 2012 vector
Bulgaria Ltd
16 Municipality Borders -Serbia Archive Geographica 2012 vector
Ltd
17 Borders of land belonging to Archive Geographica 2012 vector
one village - Bulgaria Ltd
18 Serbia Archive Geographica 2012 vector
Ltd
19 Borders of settlements - Map of restored 2008 vector
Bulgaria property
20 Borders of settlements - Cadastre map, satellite - vector
Serbia images
21 Natura 2000-Directive http://natura2000bg.org - vector
2009/147/EC of
theEuropeanParliamentand
of theCouncil of 30
November 2009
ontheconservation of
wildbirds
EUROPEAN UNION
Bulgaria – Serbia IPA Cross-border Programme
“Assessment of flood risk – a base for sustainable development in upper part of Nishava
catchment”
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5. IPA CBC Programme Bulgaria - Serbia
22 Natura 2000- http://natura2000bg.org - vector
CouncilDirective 92/43/EEC
of 21 May 1992
ontheconservation of
naturalhabitatsand of
wildfaunaandflora
23 Rivers Satellite images, - vector
topographic maps
24 Water areas Satellite images, - vector
topographic maps
25 History of floods Satellite images, - vector
topographic maps
26 Isolines Topographic maps - vector
27 Elevation points Topographic maps - vector
28 Concession areas Register of concession - vector
29 Roads Satellite images, - vector
topographic maps
30 Railways Satellite images, - vector
topographic maps
31 Property Map of restored - vector
property
32 Property Cadastre map - vector
33 Buildings Cadastre map - vector
34 Buffer 200 m. From Nishava Rivers - vector
35 Risk areas - - vector
Final results:
Map of the population potential risk in the Nishava basin (to Dimitrovgrad town);
Fig. 2 Map of the population potential risk in the Nishava basin
EUROPEAN UNION
Bulgaria – Serbia IPA Cross-border Programme
“Assessment of flood risk – a base for sustainable development in upper part of Nishava
catchment”
Page 5

6. IPA CBC Programme Bulgaria - Serbia
Map of the environment potential risk (according to Natura 2000 Birds directive and
Natura 2000 Habitats directive);
Fig 3.Map of the environment potential risk
EUROPEAN UNION
Bulgaria – Serbia IPA Cross-border Programme
“Assessment of flood risk – a base for sustainable development in upper part of Nishava
catchment”
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7. IPA CBC Programme Bulgaria - Serbia
Map of the transport infrastructure potential risk for Nishava basin (to Dimitrovgrad
town).
Fig. 4 Map of the transport infrastructure potential risk for Nishava basin
EUROPEAN UNION
Bulgaria – Serbia IPA Cross-border Programme
“Assessment of flood risk – a base for sustainable development in upper part of Nishava
catchment”
Page 7

8. IPA CBC Programme Bulgaria - Serbia
Map for the Flood risk in the town of Godech
Fig. 5 Flood risk in the town of Godech
EUROPEAN UNION
Bulgaria – Serbia IPA Cross-border Programme
“Assessment of flood risk – a base for sustainable development in upper part of Nishava
catchment”
Page 8

9. IPA CBC Programme Bulgaria - Serbia
Map for the Flood risk in the town of Dimitrovgrad
Fig. 6.Flood risk in the town of Dimitrovgrad
EUROPEAN UNION
Bulgaria – Serbia IPA Cross-border Programme
“Assessment of flood risk – a base for sustainable development in upper part of Nishava
catchment”
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10. IPA CBC Programme Bulgaria - Serbia
This publication was elaboraed with the assistance of the European Union, through IPA
Cross-border co-operation programme CCI No 2007CB16IPO006.
The contents of this publication is a responsibility of the SRD-SU „St. Kliment Ohridski” and
should in no way be accepted as a statement of the European Union or the Managaing
Authority of the programme.
EUROPEAN UNION
Bulgaria – Serbia IPA Cross-border Programme
“Assessment of flood risk – a base for sustainable development in upper part of Nishava
catchment”
Page 10