Harmonisation of geometric representation of rivers and SWBs at the level of international RBDs and transboundary catchments Personal vision and digest.

Harmonisation of geometric representation of rivers and SWBs at the level of international RBDs and transboundary catchments

Personal vision and digest from results achieved so far

Eva SovjákováIndependent specialistThe presentation is dedicated to the IMGIS EG of the ICPDR

WISE GIS workshop 7-8 May EEA Copenhagen

Geometric harmonisation of river networkConceptual designAims•To achieve a seamless reference river

network •To ensure required topological consistenceTerms and conditionsThe process of harmonisation: • should be based on bilateral activities of

countries;• should not concern the political country

borders;• should be in line with the requirements of

the EC within the framework of CIS.

2

Ref: The DanubeGIS river network – international harmonisation of transboundary waters, ICPDR, 2011_05_17, StWG

Geometric harmonisation - reflections

•The turning point was an idea that border lines are not necessary the geometric elements we must consider first.

•To be consistent withimplementation of WFDthe significant role in theconceptual design play

geographic elements as geometrical

representation of SWBsand/or river segments .

Source of map: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Alex Hoebart, ICPDR+OpenGeo tool)

3

INSPIRED

National resources

Generalised reference reporting data

Discrepancies

Border line cases influence the complexity of necessary steps

4

2 abstract features for river network harmonisation• Harmonised Point • Harmonised Stretch

5

Virtual Harmonised River Stretch• Useful solution in all

border line cases• First concept for

discrepant cases• Second concept for

zigzagging rivers

Simplification of geometric representation of rivers, SWBs, river segments

- virtual river continua- simplification of river axe- heritage of geometic

representation of border line

6

Steps towards the bilateral and common solution at the RBD level

Identified spatial problems

Visualisation of bilateral cases

Feature for harmonisation

ID and attributes

Bilateral agreement

Improving the national reporting

data sets

Data templatesReference data

sets as working layers

at RBD level

Guidance

Following up activity

Platform for further

harmonisation activities

7

Focus on needs and procedures

Ready for bilateral level

Ready for DanubeGIS 1)

Ready for follow up activities

1) Means ready for collection of data at RBDs level

8

.Ready for bilateral

discussion

9

. Collection data at RBD level

The Danube countries have at disposal:

• Concept document (see ref . on the page 6) • Guidance on geometric harmonisationin the Danube River Basin

• Data templates• Tools for upload of harmonised GI,incl. metadata (ready soon)

10

HPoint - Rules

• HPoints have to be provided by all countries involved in the harmonisation process (two in most cases, three in some) resulting in two or three matching datasets;

• Only types of harmonisation points as listed in code list, not all types as used for the bilateral level;

• There should be at least 2 HPoints for each Hstretch (type 2 and 3);

• It is not possible to have one point with double function, e.g. one point with the function "end of HStretch" and "start of HStretch“;

▫ For each function separate points have to be provided which results in points having the same coordinates.

Source: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

11

HPoint – Code List, Template Domain name Value Description

HPointType Domain 1 simple crossing

HPointType Domain2 start of the harmonised stretch

(orographically)

HPointType Domain3 end of the harmonised stretch

(orographically)

HPointType Domain4 confluence point

(within a harmonised stretch)

HPointType Domain 5 touching node

Source: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

12

See more in the Annex, pages 22-25

HStretch - Rules• HStretches have to be provided by both countries

involved in the harmonisation process resulting in two matching datasets;

• There is a 1:n relationship between HStretch and RWSeg;• HStretch and the relevant RWSeg segments have to have

the same geometry;• There is a n:1 relationship between HStretch and River;

one HStretch can not range over two rivers;• If one border river stretch is formed by two or more rivers, for

each river a seperate HStretch has to be defined (example: border river stretch between Bavaria and Austria - Salzach & Inn);

• Only two countries can be involved in a HStretch▫ If alongside a border river stretch countries at the right

bank or left bank change, a new HStretch has to be defined;

13

Source: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

HStretch – Code List, Template

14

Domain name Value Description

HStretchType Domain 1 border river stretch

HStretchType Domain 2 simple ( often virtual) stretch of connectivity

HStretchType Domain 3 lakefront stretch (segment of lakefront)

Source: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

See more in the Annex, pages 26-28

.Ready for further

activitiesAnalytical approach to the assessment of characteristic of transboundary SWBs.

Mutual position of SWBs

15

Transboundary water body– what does it really mean?

Transboundary water body ?

Border surface

water body (bSWB)

Transboudary surface

water area (tbSWA)

a) Border surface water body is a body of water that by one or more points of the coordinate image of the watercourse axis touches the state border. In the case of water bodies in lake category the border water body shall also be considered that part of the lake which is divided by virtual segment and this segment touches the state border or merges in it.

Note: By this definition and tools used for the geometric harmonisation of the river network transboundary waters / water bodies are strictly divided with regard to the interests of individual countries, and respect the requirements of the WISE electronic reporting.

Consideration why should be incorrect usage of term „transboundary water body“ was accepted from notes of Mrs. Gabriella Jelinek (from HU), member of the IMGIS of ICPDR.

16

Transboundary surface water area

b) The area of cooperation on the transboudary waters in the sense of implementation of the WFD shall mean a seamless transboundary group of border water bodies (tbSWA). If necessary, also „non-border“ surface water bodies following up with border surface water bodies may be assigned to tbSWA. In these areas, usually both states declare their interest in bilateral cooperation at the level of commissions for transboundary waters.

Merging in SWBs from different categories – lakes and rivers– is impossible.

17

Co-autors of definitons are Mr. Pavel Knotek from the Secretariat of ICPE and GIS experts from DE-BY.

See more in the Annex, pages 29-30

In the near future the synthese is possible again

bSWB tbSWA tbSWB

18

How experts from RBDs need the presented tools and procedures

ICPDR:

ICPE:

ICPO:

19

?

Contact & Information

Gabriela VinczeT: +43-(0)1-313 04/3160

20

[email protected]@[email protected]

Harmonisation of geometric representation of rivers and SWBs at the level of international RBDs and transboundary catchments

Annex Pages: 22 - 25 bound with the main page 12 26 - 28 bound with the main page 14 29 – 30 bound with the main page 17

21

WISE GIS workshop 7-8 May EEA Copenhagen

HPoint Types (1)

22

2=start point

3=end point1= simple crossing

Source: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

22

HPoint Types (2)

ATHU286, ATHU287, ATHU288• End point of HStretch HU5• Start point of Hstretch HU7• Confluence point of

„Loosbach“ into „Tauscherbach/Aubach“

3 points in the dataset with3 different IDs

23

(end point)

(start point)

HU

5

ATHU288ATHU287

HU7

Source: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

HPoint Template (1)

24

HPoint Template (1)

Source: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

HPoint Template (2)

25

Source: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

HStretch - Border River Stretch

26

HS1 HS2 HS3

River X

River X

River Z

River Z

Country A Country B

Country C

River Z

Source: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

HStretch template (1)

27

Source: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

HStretch template (2)

28

Source: 14th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

What is tbSWA ? (1)

First design of charts for harmonisation of characteristics of SWBs had prepared Mrs. Birgit Fiszkal, DE-BB, nominated German expert in the RBM planning group (GP) and Data management group (GD) of ICPO

29

What is tbSWA ? (2)

30