1. 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 Sovjáková Independent specialist The presentation is dedicated to the IMGIS EG of the ICPDR WISE GIS workshop 7-8 May EEA Copenhagen

2. Geometric harmonisation of river network Conceptual design Aims To achieve a seamless reference river network To ensure required topological consistence Terms and conditions The 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

3. 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 with implementation of WFD the significant role in the conceptual design play geographic elements as geometrical representation of SWBs and/or river segments. Source of map: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Alex Hoebart, ICPDR+OpenGeo tool) 3

4. INSPIRED National resources Generalised reference reporting data Discrepancies Border line cases influence the complexity of necessary steps 4

5. 2 abstract features for river network harmonisation Harmonised PointHarmonised Stretch 5

6. 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

7. 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 templates Reference data sets as working layers at RBD level Guidance Following up activity Platform for further harmonisation activities 7

8. 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

9. . Ready for bilateral discussion 9

10. . Collection data at RBD level The Danube countries have at disposal: Concept document (see ref. on the page 6) Guidance on geometric harmonisation in the Danube River Basin Data templates Tools for upload of harmonised GI, incl. metadata (ready soon) 10

11. 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: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT) 11

12. HPoint – Code List, Template Domain nameValueDescription HPointType Domain 1 simple crossing HPointType Domain 2 start of the harmonised stretch (orographically) HPointType Domain 3 end of the harmonised stretch (orographically) HPointType Domain 4 confluence point (within a harmonised stretch) HPointType Domain 5touching node Source: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT) 12 See more in the Annex, pages 22-25

13. 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: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

14. HStretch – Code List, Template 14 Domain nameValue Description HStretchType Domain1 border river stretch HStretchType Domain2 simple ( often virtual) stretch of connectivity HStretchType Domain3 lakefront stretch (segment of lakefront) Source: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT) See more in the Annex, pages 26-28

15. . Ready for further activities Analytical approach to the assessment of characteristic of transboundary SWBs. Mutual position of SWBs 15

16. 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

17. 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

18. In the near future the synthese is possible again bSWBtbSWAtbSWB 18

19. How experts from RBDs need the presented tools and procedures ICPDR: ICPE: ICPO: 19 ?

20. Contact & Information Gabriela Vincze T: +43-(0)1-313 04/3160 20 eva@sovjak.net alex.hoebart@unvienna.org gabriele.vincze@umweltbundesamt.at

21. 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

22. HPoint Types (1) 22 2=start point 3=end point 1= simple crossing Source: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT) 22

23. 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 with 3 different IDs 23 (end point) (start point) HU5 ATHU288 ATHU287 HU7 Source: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

24. HPoint Template (1) 24 HPoint Template (1) Source: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

25. HPoint Template (2) 25 Source: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

26. HStretch - Border River Stretch 26 HS1HS2 HS3 River X River Z Country A Country B Country C River Z Source: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

27. HStretch template (1) 27 Source: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

28. HStretch template (2) 28 Source: 14 th IMGIS EG Meeting, 26 & 27 April 2012, Bijeljina (Gabriela Vincze, Umweltbundesamt AT)

29. 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

30. What is tbSWA ? (2) 30