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WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 1 WISE GIS guidance – second edition Chapter 5.4: European Feature Coding WISE GIS Workshop.

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Presentation on theme: "WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 1 WISE GIS guidance – second edition Chapter 5.4: European Feature Coding WISE GIS Workshop."— Presentation transcript:

1 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 1 WISE GIS guidance – second edition Chapter 5.4: European Feature Coding WISE GIS Workshop Dublin 15&16 January 2008 Gabriela Vincze Ingrid Roder

2 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 2 Content Definition of terms Unique European codes Non hydrological reference features Hydrological features Application of codes Management of codes

3 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 3 Definition of terms Reference features are geographic features reported by Member States to WISE. They can be hydrological features or non hydrological features. (a) hydrological reference features are hydrological features used at European level in WISE as reference for thematic geographic data. Hydrological reference features carry a hydrological feature code (e.g. river basins, rivers, lakes) (b) non-hydrological reference features Non-hydrological reference features carry unique identifiers (e.g. water bodies, monitoring stations)

4 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 4 Unique European Codes Unique European codes will be applied to Non-hydrological reference features River basin districts, Sub-units, Water bodies, monitoring stations, discharge points, point sources, … Hydrological reference features River(sub)basins (Main)Rivers River Segments (reaching from confluence to confluence) Lakes

5 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 5 Non-hydrological identifiers Unique non-hydrological identifier are provided by the following format (see CIS Guidance doc. No. 9) MS#1#2…#22 where MS = a 2 character Member State identifier, in accordance with ISO 3166-1-Alpha-2 country codes, and #1#2…#22 = an up to 22 character feature code that is unique within the Member State. Entity types can be used to identify the types of features Non-hydrological reference features should carry the code of the hydrological feature to which they are related as a foreign key

6 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 6 Non-hydrological identifiers: entity types The list of entity types has to be managed at European level Lenght of the entity type code segement is fixed to two characters Example Hydrological features (ESTAT Coding Paper) River basinBA River segmentRS … Specifications for reporting geographical data under UWWTD Sensitive AreaSA Sensitive Area – riverRI Sensitive Area – lakeLK …

7 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 7 Coding hydrological features Based on the work of the ad-hoc coding group: Proposal for an European coding system for hydrological feature, v3, Sept. 2007 (Appendix 7) further developed by JRC: Recommendations for the creation of a coding system for surface hydrological features (Appendix 8)  Hydrological System and Sea region code  Pfafstetter commencement code  Island coding  Hydrological RBD Code

8 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 8 Elements of the hydrological code Hydrological System and Sea region code Island Code Pfafstetter commencement code River segments and elementary catchment Pfafstetter code Entity type code Lake identifier

9 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 9 Hydrological System and Sea region CodeOceans ANorth Eastern Atlantic Ocean WNorth Western Atlantic Ocean SSouth Atlantic Ocean MMediterranean Sea NArctic Ocean IIndian Ocean PNorthern Pacific Ocean BSouthern Pacific Ocean Hydrographical SystemSea Nr.Sea Name North Eastern Atlantic Ocean1Open Ocean 2Norwegian Sea 4Celtic Sea and Channels 5North Sea 6Baltic Sea North Western Atlantic Ocean1Open Ocean 2Caribbean Sea Mediterranean Sea2Western Basin 4Eastern Basin 5Black Sea Arctic Ocean7Barents Sea East 8White Sea 9Barents Sea West Indian Ocean1Open Ocean CodeEndorheic System CCaspian Sea HOrumiyeh Lake VVan Lake ZTuz Saltlake

10 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 10 Elements of the hydrological code (2) Island coding (proposal available – see Appendix 8) Pfafstetter commencement code (available with CCM2: http://agrienv.jrc.it/activities/catchments/) River segments and elementary catchment Pfafstetter code (available with CM2)  see presentation Alfred de Jager

11 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 11 Elements of the hydrological code (3) Entity types An entity type can be used to identify the type of a feature (see slide 6 – non-hydrological identifiers) Lake identifier Required for lakes that are not coneccted to a river network Has to be managed within an international river basin on European or international level

12 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 12 Elements of the hydrological code (4) AbbreviationLogical Element Relation toData typeMin., Max. Lenght H or HDM_IDCoastline, Hydrological system String1 S or SEA_IDCoastline, SeaHydrological systemNumber 1-9,1 II or Island sortLandmass, Island sort Sea and Hydrological system Hexadecimal number 2 CCCCC or Commencement Sea outlet commencement code Sea and Hydrological system and Island Number 11111 – 99999, 5 P or PfafstetterRiver-reaches Pfafstetter SeaoutletNumber1-12 E or Entity typeEntity type codeCharacter2 L or Lake identifierLake identifierCharacter0,2 Can be stored in seperate files in the database – elements can be used flexible Data exchange – elements can be concatenated The format of the code will be as follows: HSIICCCCCPPPPPPPPPPPPEELL

13 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 13 Application of the hydrological code River Basin District Code (national and international RBDs) 1. River Basin District Hydrological Code  see presentation Alfred de Jager 2. Admin. River Basin District Code International river and lake code Work in progress Element Relation toData typeMin., Max. Lenght Coastline, Hydrological system String1 Coastline, SeaHydrological systemNumber 1-9,1 Consecutive numberNumber 1-93

14 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 14 RBD Codes International RBD Codes  Appendix 9: Chapter_5.4_Feature_coding_Appendix9_v1.0_2008 014.xls

15 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 15 Application of the hydrological code (2) WISE GIS Reference dataset – EU level Requirement Topological river newtork including basins with catchment boundaries lakes Topological relation between the basin dataset and river network Option Using CCM2 and transfer codes from CCM2 to main rivers

16 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 16 Application of the hydrological code (3) MS Are invited to apply the coding system Pfafstetter commencement code: http://agrienv.jrc.it/activities/catchments/ Pilot study: Danube River Basin District

17 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 17 Management of codes It is proposed to manage the following identifiers at the European level: a) hydrological features codes of harmonised WISE Water Reference datasets: Main rivers (> 500 km²) and main lakes (>100 km²) River Basins of main rivers and large rivers b) non-hydrological identifiers of harmonised WISE Water Reference datasets : River Basin Districts Sub-Units

18 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 18 Management of codes MS will be responsible to Manage their hydrological codes and non hydrological identifiers To keep them consistent and unique

19 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 19 Recommendations Provision of unique identifiers for each of the spatial objects defined in the WISE data model Documentation of life-cycle rules when the existing object is redundant and a new object with a new identifier is created Reporting the same feature always with the same identifier (e.g. monitoring stations reported to SoE, WFD, Nitrates Directive, …)

20 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 20 Requirements (1) Uniqueness: No two spatial objects of spatial object types shall have the same identifiers The identifier shall not be used again if an object is modified. Persistence: The identifier shall remain unchanged during the life- time of an object. The definition of every spatial object type shall state which modifications (e.g. attribute changes, merging with other spatial objects) do or may change the identity of a spatial object

21 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 21 Requirements (2) Example: new identifiers shall to be created if the location of a point features changes (e.g. Monitoring station is moved upstream or downstream;); threshold 125 m in accordance to the positional accuracy recommended for GIS datasets (according to the scale 1:250.000) the location or length of a line feature changes (e.g. river water body: in any case if water bodies are divided or merged) the location or size of a polygon changes (e.g. two groundwater bodies: in any case if water bodies are divided or merged)

22 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 22 Temporal aspects The temporal aspect of the non-reference features entails the follow-up of changes in time. It will be necessary to establish a system that manages changes of features, i.e. lifetime periods and identification of predecessors and successors. See also chapter 4.2 General principles

23 WISE-GIS Workshop, Dublin, 15&16 January 2008 20.01.2016| Folie 23 Next steps Apply hydrological codes at EU level – main rivers, main lakes Develop river codes Develop entity type code list at EU level – if feasible Publish admin. RDB code proposed after checking by MS Pilot application of codes: Danube River Basin District  comments until End of January 2008

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