1. VENETO REGION
Dipartimento Territorio
Sezione Pianificazione Territoriale Strategica
e Cartografia
Eng. Maurizio De Gennaro, Dr. Silvano De Zorzi,
Arch. Massimo Foccardi, Dr. Umberto Trivelloni, Diego Truco
From the Land Use
Map to the evaluation
and management of
flood risk.
A Veneto Region
experience on
GMES/Copernicus
downstream service
and the
implementation on
Directive 2007/60 EC

2. The Veneto Region has
begun many initiatives
for the creation and the
update of the
cartographic tools, this
activity has constituted,
during these last years,
a basic support for the
planning initiatives of
the Local Authorities,
in particular, providing
appropriate tools of
territorial know-how.
THE ISTITUTIONAL CONTEXT

3. THE LAND USE COVERAGE
DATA BASE PROJECT
On the whole it is divided in four steps:
 Production of the DB of the coverage for
territories artificially modelled.
Project GSE Land – Urban Atlas
 Implementation of the DB of the coverage
of the non urban areas: agricultural
territories, forest territories, wetlands, etc.
 Production of Historic Land use maps
(reverse engineering process)
 The Veneto Land Cover Map updating
(GSE Land-Urban Atlas HR)
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

4. 1st
STEP: GSE LAND – URBAN
ATLAS PROJECT
 It is promoted and founded by
ESA (European Space Agency) –
that, in the field of the GMES
initiatives, prefigures the supply
of Services for Territory
Monitoring with satellite data at
High Resolution.
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

5. GSE Land – Urban Atlas: Satellite Images
Spot Venezia True Color 10 July 2006
Regione del Veneto
SPOT Images on file - 2006
SPOT Images on file - 2005
SPOT Images last data capture - 2007

6. 1st
STEP: GSE LAND – URBAN
ATLAS: METHODOLOGY
 The GSE Land – Urban Atlas methodology,
prefigures a classification of the territory using
the Moland Legend, in line with the directives
of the CORINE Land Cover project and with
the realization of a database at 1:10000 scale
(MMU 0.25 ha).
 The data used for the creation of the Land DB
are of different kinds:
as well as satellite images SPOT 5,
multispectral ranges (10 m.) and panchromatic
(2.5 m.), others ancillary data have been used
as: Teleatlas DB, Digital Regional Topographic
Map, DEM, Forest Map, Transport Network and
Orthoimage by “Regione del Veneto” .
 The classification is executed with the support
of software E-Cognition with an object-oriented
approach.
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

7. GSE Land – Urban Atlas: Ancillary data
From the provider:
 Tele Atlas 2006
From Regione del Veneto:
 Forest Map 2000
 Vector and Raster Regional Topographic Map
 Orthoimages 2003 – 2006
 DTM
 Administrative borders
 Census sections 2001
 DBPrior 10k (routes, railways, hydrography)
networks at the 1:10000 scale
 DB Land use of the drainage basin in the
Venice Lagoon (1:10000)
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

8. GSE Land – Urban Atlas
Class Harmonization Urban density
automatic built-up extraction - SPOT
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

9. GSE Land – Urban Atlas
Class Harmonization Urban density
evaluation built-up percentage- SPOT
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

10. GSE Land – Urban Atlas: Benefits
 The benefits of the GSE Land project,
based on the satellite images, concern the
acquisition of a Land Use Map, for the
Urban fields, realized on the whole Region,
with a quality standard validated and
certified at European level.
 This tool allows the use of a data base
structure with an extreme accuracy for the
monitoring of the Land Use (urban
expansions, Land Use changes and
transformations), mainly for the
applications and the studies based on the
accuracy geographical data (agricultural
soil, ecological corridors, drainage basin of
Venice Lagoon).
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

11. Venezia
Some detail of the Urban Atlas product……..
PadovaRovigo

12. 2nd
STEP: IMPLEMENTATION OF THE GSE LAND –
URBAN ATLAS DB, WITH THE ACQUISITION OF
THE LAND USE COVERAGE FOR THE
EXTRAURBAN AREAS
 For the applications and studies based
on the detailed geographical data
(Agricultural Land Consumption,
Ecological Corridor, drainage basin of
Venice Lagoon) we recurred to a
further in depth examination, because
the GSE Land project, for the extra
urban areas, is limited at the 2 level of
the CORINE classification.
Regional Law December 12th
2003, n.40
“New rules for the interventions in agriculture”
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

13. SUBCLASS OF DETAIL TILL THE 5°
LEVEL – GEOGRAPHICAL
ACCURACY DATA
 Agricultural Land Consumption
 Woods and Forests
 Wetlands
 Water bodies
 Ecological corridor
 Drainage basin of Venice Lagoon
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

14. The production of Historical
Land Use maps - Third Step
 The reverse engineering
process
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

15. Territorial Surface ha “Artificial Areas” Surface ha “Agricolture Areas” Surface ha “Forests and semi
natural areas ha” Surfaces
“WetLands and
Water bodies" ha Surface
4673.0 1397.3 1682.8 1526.5 66.3
Distribuzione percentuale della superficie territoriale
29.9%
36.0%
32.7%
1.4%
Sup EDIFICATO Sup AREE AGRICOLE Sup FORESTE Sup ACQUE
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

16. Ortoimage AIMA 1994 Ortoimage IT2000 NR 2006-2007
Land Use 2006Land Use 1994

17. Base Map 1983 OrtoImage AIMA 1994
Land Use 1983
Land Use 1994

18. The Veneto Land Cover Map
Updating- Urban Atlas HR -
Fourth Step
 GSE Land Urban Atlas HR
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

19. The Veneto Land Cover Map
Updating- Urban Atlas HR -
Fourth Step
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience
Land Cover Map with
the use of GeoEye1
technology

20. The Veneto Land Cover Map
Updating- Urban Atlas HR –
Fourth Step
 Process flow-chart for the creation of
the high resolution Urban Atlas
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience
Techinical Specification

21. The Veneto Land Cover Map
Updating- Urban Atlas HR - Fourth
Step
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience
Image by WorldView-
2 technology

22. The Veneto Land Cover Map
Updating- Urban Atlas HR –
Fourth Step
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience
 Each sensor of WorldView-2 is
narrowly focused on a particular
range of the electromagnetic
spectrum that is sensitive to a
particular feature on the ground or a
property of the athmosphere.

23. The Veneto Land Cover Map Updating-
Urban Atlas HR - Fourth Step
 The benefits of the 8 Spectral Bands
 Resolution 50 cm
 New spectral bands:
 Coastal
 Yellow
 Red edge
 NIR2
 Slew time: 300 Km in 9”
 Swath width: 16.4 Km at nadir
 Collection Capacity: 975,000 km2
/day
 Average Revisit: 1.1 days
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

24. The Veneto Land Cover Map Updating-
Urban Atlas HR - Fourth Step
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience
In few words

25. The Veneto Land Cover Map
Updating- Urban Atlas HR - Fourth
Step
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience

26. Land Use Map and the 2007/60/EC

27. The Realized
Activities

28. Hazard Vulnerability Risk
R = H * V * E

29. Sample Area
Sample area to
highlight the
methodological
steps for the
production of
the Flooding
Risk Maps

30. Land Use Map
Land Use Map
at the 1:10000
scale

31. Topographic DB
Data derived by
the topographic
DB (example:
Hospital,
schools,
industrial
facilities, etc).

32. DTM
Digital Terrain Model (DTM)
realized by a LiDAR survey.

33. HAZARD
Hazard map of
river flood.
The Hazard is
linked to
different
scenarios given
by the recur
time of the
event.

34. RISK Map
Risk Map
obtained
combining the
elements
subjected with
the hazard.
In the map
legend the 4
categories of
Risk

35. Risk Classes

36. Local Authority PROVINCIAR1_Perc R2_Perc R3_Perc R4_Perc No_Risk Pop_R1 Pop_R2 Pop_R3 Pop_R4 Pop_In_Ris Pop_Com Per_Pco
Ficarolo RO 88,05 10,75 1,09 0,10 0,00 0 2771 0 0 2771 2774 100
Ariano nel Polesine RO 0,00 10,47 0,80 0,76 87,97 0 4515 237 8 4760 4773 100
Frassinelle Polesine RO 92,22 7,78 0,00 0,00 0,00 0 1635 0 0 1635 1637 100
Castelmassa RO 79,24 20,37 0,33 0,05 0,00 0 4074 0 0 4074 4081 100
Taglio di Po RO 83,35 15,66 0,56 0,43 0,00 0 7473 140 16 7629 7635 100
Porto Tolle RO 0,00 14,12 0,93 1,10 83,86 0 8024 1163 75 9262 9265 100
Costa di Rovigo RO 0,00 14,00 0,00 0,00 86,00 0 2646 0 0 2646 2865 92
Villanova del Ghebbo RO 0,00 0,82 0,00 0,00 99,18 0 212 0 0 212 2165 10
Porto Viro RO 0,00 33,71 0,17 0,28 65,83 0 14065 0 62 14127 14132 100
Giacciano con Baruchella RO 0,00 1,69 0,00 0,00 98,31 0 50 0 0 50 2287 2
Melara RO 0,00 10,02 0,51 0,00 89,47 0 1758 0 0 1758 1758 100
Badia Polesine RO 0,00 0,03 0,00 0,00 99,97 0 0 0 0 0 10044 0
Castagnaro VR 0,00 8,19 0,00 0,00 91,81 0 1388 0 0 1388 4003 35
Adria RO 88,64 11,27 0,05 0,04 0,00 0 20151 0 0 20151 20180 100
Rovigo RO 0,00 9,41 0,00 0,00 90,59 0 15826 0 0 15826 49352 32
Pettorazza Grimani RO 0,00 8,42 0,00 0,00 91,58 0 1617 0 0 1617 1621 100
San Martino di Venezze RO 0,00 10,54 0,00 0,00 89,46 0 3864 0 0 3864 3875 100
Peschiera del Garda VR 0,00 1,12 0,14 0,48 98,25 0 47 0 36 83 8347 1
Castelnuovo del Garda VR 0,00 0,08 0,00 0,01 99,90 0 23 0 3 26 8499 0
Lazise VR 0,00 0,17 0,01 0,09 99,72 0 171 14 68 253 5890 4
Bardolino VR 0,00 0,24 0,02 0,10 99,64 0 199 12 87 298 6123 5
Garda VR 0,00 0,95 0,01 0,06 98,99 0 516 2 8 526 3592 15
Torri del Benaco VR 0,00 0,10 0,01 0,01 99,87 0 108 0 18 126 2562 5
Brenzone VR 0,00 0,09 0,00 0,02 99,89 0 163 0 30 193 2316 8
Malcesine VR 0,00 0,17 0,00 0,01 99,82 0 194 0 12 206 3299 6
Percentage of the Risk
Areas

38. Embankment altitude
classification
Particulary
significant the
classification
of all the
marine and
river banks in
the Delta Po
area on the
basis of the
altitude
calculated by
the DTM

39. Elements of criticality
 Not entire relation in the classifications used within
the Land Use Map among the various Italian
Regions;
 Different origins and periods of updating of the data
on the various elements (Land Use Map, Base Map,
ARPAV data (Environment data) etc.);
 Heterogeneous elevation data per period of the
survey, accuracy and origin (LiDAR, Base Map,
measure);
 Necessity to plan periodic update of the data to
execute the monitoring as provided by the Directive
2007/60/EC.

41. Thank You
Email: silvano.dezorzi@regione.veneto.it
From the Land Use
Map to the evaluation
and management of
flood risk, Veneto
Region experience