{
  "title": "Greek river water bodies — Ministry of Environment and Energy (WFD)",
  "provider": "Greek Ministry of Environment and Energy (ΥΠΕΝ)",
  "count": 1322,
  "bounds": [
    19.71534170876863,
    34.98309128194576,
    28.175772520655766,
    41.74123539604321
  ],
  "uniqueWaterBodyCodes": 1319,
  "sourceFeatureDesignationCounts": {
    "natural": 1128,
    "heavilyModified": 156,
    "artificial": 38
  },
  "designationClassification": {
    "method": "Derived from the final character of the original localid: N natural, H heavily modified, A artificial. No geometry or flood-event type was used to infer the designation.",
    "codeMapping": {
      "N": "Natural",
      "H": "Heavily modified",
      "A": "Artificial"
    },
    "sourceUrl": "https://wfdver.ypeka.gr/wp-content/uploads/2023/11/EL13_2REV_P4.2_Taxinomisi-EYS.pdf#page=27",
    "locator": "Second revision, Crete: Classification of surface-water systems, printed page 13, section 3.1.2, Table 3-2 (PDF page 27)",
    "countUnit": "Source features, including repeated water-body codes"
  },
  "crs": "EPSG:4326",
  "nativeCRS": "EPSG:2100",
  "encoding": "UTF-8",
  "sourceYear": null,
  "revision": "Second revision of the River Basin Management Plans",
  "sourceUrl": "https://wfdver.ypeka.gr/el/geoportal-gr/",
  "service": "https://wfdservices.ypeka.gr/geoserver/WFD_geodata_50K_greece/wfs",
  "preparedUTC": "2026-10-04T08:01:08.244195+00:00",
  "overview": {
    "file": "river-water-bodies-overview.json.gz",
    "count": 1322,
    "bytes": 607127,
    "sha256": "36c3dd646451a216e938186fc89273f9a8b811c363242b1c25e22420ac548d95",
    "bounds": [
      19.71534170876863,
      34.98309128194576,
      28.175772520655766,
      41.74123539604321
    ],
    "geometryTypes": {
      "LineString": 1222,
      "MultiLineString": 100
    },
    "vertices": 34149,
    "displayGeneralisationMetres": 50,
    "geometryMethod": "50 m topology-preserving simplification in EPSG:2100, reprojected to EPSG:4326",
    "idProperty": "gid",
    "officialCodeProperty": "localid",
    "nameProperty": "nametext",
    "internationalNameProperty": "nametxtint"
  },
  "detail": {
    "file": "river-water-bodies.json.gz",
    "count": 1322,
    "bytes": 3374007,
    "sha256": "3771feaa2bbbfa85b3b9f9924787112be24c9e07aefbb5563275ecad2bfa9842",
    "bounds": [
      19.71534170876863,
      34.98309128194576,
      28.175772520655766,
      41.74123539604321
    ],
    "geometryTypes": {
      "LineString": 1222,
      "MultiLineString": 100
    },
    "vertices": 210444,
    "displayGeneralisationMetres": 0,
    "geometryMethod": "Full source geometry reprojected to EPSG:4326; no simplification",
    "idProperty": "gid",
    "officialCodeProperty": "localid",
    "nameProperty": "nametext",
    "internationalNameProperty": "nametxtint"
  },
  "contextLayers": {
    "basins": {
      "file": "basins.json.gz",
      "count": 46,
      "bytes": 1635858,
      "sha256": "dbc022e9fba8639d9b2ae5c52b00e1aa2988e2719be6289753ed4f312d9afde1",
      "bounds": [
        19.373067129848824,
        34.801932946558544,
        29.64306317246879,
        41.74842846484897
      ],
      "geometryTypes": {
        "MultiPolygon": 40,
        "Polygon": 6
      },
      "vertices": 108124,
      "displayGeneralisationMetres": 100,
      "geometryMethod": "Coverage simplification: shared boundaries retained; 100 m tolerance in EPSG:2100",
      "idProperty": "eu_cd",
      "officialCodeProperty": "eu_cd",
      "nameProperty": "namenl",
      "internationalNameProperty": "name",
      "sourceCoverageValid": true
    },
    "districts": {
      "file": "districts.json.gz",
      "count": 14,
      "bytes": 1449682,
      "sha256": "c70c39bcfd86a83fecf7109b8c3392b3acc0584cf7e57b319dda0a2cf56e4cff",
      "bounds": [
        19.373067129848828,
        34.80193294655854,
        29.64306317246878,
        41.74842846484897
      ],
      "geometryTypes": {
        "MultiPolygon": 14
      },
      "vertices": 96581,
      "displayGeneralisationMetres": 100,
      "geometryMethod": "Coverage simplification: shared boundaries retained; 100 m tolerance in EPSG:2100",
      "idProperty": "eurbdcode",
      "officialCodeProperty": "eurbdcode",
      "nameProperty": "rbdnamenl",
      "internationalNameProperty": "rbdname",
      "sourceCoverageValid": true
    }
  },
  "downloads": {
    "rivers": {
      "file": "gr_rwb_greece_2rev.zip",
      "bytes": 2784001,
      "sha256": "aeb5c987397afc2372dba79c35be6eac15b70cead0bfbd13fd950598081a2ad2",
      "format": "Original Shapefile ZIP",
      "crs": "EPSG:2100",
      "encoding": "ISO-8859-7"
    },
    "basins": {
      "file": "egy_rb_new_2014.zip",
      "bytes": 17573200,
      "sha256": "b1545702920b353dd8361678b3142d6a2b3bb771225be4fd0c7a49bca618fb44",
      "format": "Original Shapefile ZIP",
      "crs": "EPSG:2100",
      "encoding": "ISO-8859-7"
    },
    "districts": {
      "file": "egy_rbd_2010.zip",
      "bytes": 14917132,
      "sha256": "8d56b51b002f6809875f23ce080e904492041676c68df92362d947b7b94f0eb8",
      "format": "Original Shapefile ZIP",
      "crs": "EPSG:2100",
      "encoding": "ISO-8859-7"
    }
  },
  "sources": {
    "rivers": {
      "title": "Ποτάμια Υδατικά Συστήματα – 2η Αναθεώρηση",
      "layerName": "gr_rwb_greece_2rev",
      "count": 1322,
      "nativeCRS": "EPSG:2100",
      "encoding": "ISO-8859-7",
      "browserEncoding": "UTF-8",
      "sourceYear": null,
      "revision": "Second revision of the River Basin Management Plans",
      "sourceUrl": "https://wfdver.ypeka.gr/el/geoportal-gr/",
      "service": "https://wfdservices.ypeka.gr/geoserver/WFD_geodata_50K_greece/wfs",
      "sourceRequest": "https://wfdservices.ypeka.gr/geoserver/WFD_geodata_50K_greece/wfs?REQUEST=GETFEATURE&SERVICE=WFS&VERSION=1.1.0&TYPENAMES=gr_rwb_greece_2rev&OUTPUTFORMAT=shape-zip&TIME=&STYLE=&FORMAT_OPTIONS=CHARSET:ISO-8859-7&SRSNAME=EPSG:2100",
      "downloadFilename": "gr_rwb_greece_2rev.zip",
      "downloadSHA256": "aeb5c987397afc2372dba79c35be6eac15b70cead0bfbd13fd950598081a2ad2",
      "geometryTypes": {
        "LineString": 1222,
        "MultiLineString": 100
      },
      "vertices": 210444,
      "featuresWithGreekNameCharacters": 1320,
      "idProperty": "gid",
      "nameProperty": "nametext",
      "officialCodeProperty": "localid",
      "internationalNameProperty": "nametxtint",
      "properties": [
        "gid",
        "fid",
        "localid",
        "nametxtint",
        "nametext",
        "spzonetype",
        "rzoneid",
        "ecological",
        "chemical",
        "total"
      ],
      "originalGeometryAndAttributesRoundtrip": "Exact against local GeoPackage conversion",
      "uniqueWaterBodyCodes": 1319,
      "repeatedWaterBodyCodes": {
        "EL0901R0F0208016N": {
          "featureCount": 2,
          "gids": [
            138,
            1322
          ]
        },
        "EL1209R00020800104H": {
          "featureCount": 2,
          "gids": [
            17,
            1311
          ]
        },
        "EL1209R00020800105N": {
          "featureCount": 2,
          "gids": [
            1286,
            1310
          ]
        }
      },
      "sourceCodeSuffixCounts": {
        "N": 1128,
        "H": 156,
        "A": 38
      },
      "sourceFeatureDesignationCounts": {
        "natural": 1128,
        "heavilyModified": 156,
        "artificial": 38
      },
      "designationClassification": {
        "method": "Derived from the final character of the original localid: N natural, H heavily modified, A artificial. No geometry or flood-event type was used to infer the designation.",
        "codeMapping": {
          "N": "Natural",
          "H": "Heavily modified",
          "A": "Artificial"
        },
        "sourceUrl": "https://wfdver.ypeka.gr/wp-content/uploads/2023/11/EL13_2REV_P4.2_Taxinomisi-EYS.pdf#page=27",
        "locator": "Second revision, Crete: Classification of surface-water systems, printed page 13, section 3.1.2, Table 3-2 (PDF page 27)",
        "countUnit": "Source features, including repeated water-body codes"
      },
      "sourceNamesWithoutGreekCharacters": {
        "894": "1T",
        "895": "7T"
      }
    },
    "basins": {
      "title": "Λεκάνες Απορροής Ποταμών (ΛΑΠ) Ελλάδας",
      "layerName": "egy_rb_new_2014",
      "count": 46,
      "nativeCRS": "EPSG:2100",
      "encoding": "ISO-8859-7",
      "browserEncoding": "UTF-8",
      "sourceYear": null,
      "revision": null,
      "sourceUrl": "https://wfdver.ypeka.gr/el/geoportal-gr/",
      "service": "https://wfdservices.ypeka.gr/geoserver/WFD_geodata_50K_greece/wfs",
      "sourceRequest": "https://wfdservices.ypeka.gr/geoserver/WFD_geodata_50K_greece/wfs?REQUEST=GETFEATURE&SERVICE=WFS&VERSION=1.1.0&TYPENAMES=egy_rb_new_2014&OUTPUTFORMAT=shape-zip&TIME=&STYLE=&FORMAT_OPTIONS=CHARSET:ISO-8859-7&SRSNAME=EPSG:2100",
      "downloadFilename": "egy_rb_new_2014.zip",
      "downloadSHA256": "b1545702920b353dd8361678b3142d6a2b3bb771225be4fd0c7a49bca618fb44",
      "geometryTypes": {
        "MultiPolygon": 40,
        "Polygon": 6
      },
      "vertices": 1542957,
      "featuresWithGreekNameCharacters": 46,
      "idProperty": "eu_cd",
      "nameProperty": "namenl",
      "officialCodeProperty": "eu_cd",
      "internationalNameProperty": "name",
      "properties": [
        "id",
        "eu_cd",
        "objectid",
        "name",
        "namenl",
        "ms_cd",
        "dist_cd",
        "areakm",
        "shape_leng",
        "shape_area"
      ],
      "originalGeometryAndAttributesRoundtrip": "Exact against local GeoPackage conversion"
    },
    "districts": {
      "title": "Υδατικά Διαμερίσματα Ελλάδας",
      "layerName": "egy_rbd_2010",
      "count": 14,
      "nativeCRS": "EPSG:2100",
      "encoding": "ISO-8859-7",
      "browserEncoding": "UTF-8",
      "sourceYear": null,
      "revision": null,
      "sourceUrl": "https://wfdver.ypeka.gr/el/geoportal-gr/",
      "service": "https://wfdservices.ypeka.gr/geoserver/WFD_geodata_50K_greece/wfs",
      "sourceRequest": "https://wfdservices.ypeka.gr/geoserver/WFD_geodata_50K_greece/wfs?REQUEST=GETFEATURE&SERVICE=WFS&VERSION=1.1.0&TYPENAMES=egy_rbd_2010&OUTPUTFORMAT=shape-zip&TIME=&STYLE=&FORMAT_OPTIONS=CHARSET:ISO-8859-7&SRSNAME=EPSG:2100",
      "downloadFilename": "egy_rbd_2010.zip",
      "downloadSHA256": "8d56b51b002f6809875f23ce080e904492041676c68df92362d947b7b94f0eb8",
      "geometryTypes": {
        "MultiPolygon": 14
      },
      "vertices": 1464349,
      "featuresWithGreekNameCharacters": 14,
      "idProperty": "eurbdcode",
      "nameProperty": "rbdnamenl",
      "officialCodeProperty": "eurbdcode",
      "internationalNameProperty": "rbdname",
      "properties": [
        "id",
        "objectid",
        "eurbdcode",
        "rbdname",
        "rbdnamenl",
        "area",
        "nationalre",
        "internatio",
        "internat_1",
        "internat_2",
        "primecompe",
        "othercompe",
        "otherrelev",
        "rbd_ms_cd",
        "eusubunitc",
        "ms_subunit",
        "subunitnam",
        "subunitn_1",
        "subunitare",
        "shape_leng",
        "shape_area"
      ],
      "originalGeometryAndAttributesRoundtrip": "Exact against local GeoPackage conversion"
    }
  },
  "attribution": "Greek Ministry of Environment and Energy (ΥΠΕΝ), Water Framework Directive geoportal; converted for this map.",
  "terms": {
    "sourceUrl": "https://wfdver.ypeka.gr/el/geoportal-gr/",
    "explicitReuseLicenseProvidedInDownloads": false,
    "note": "Original download packages contain geometry, attributes, CRS, charset and WFS request. No standalone reuse licence or validation report is included. Consult the official geoportal for source terms; this conversion does not create a new licence."
  },
  "limitations": [
    "The 1,322 features are officially delineated river water bodies in the second revision of the management plans, not a count of distinct rivers and not a complete inventory of every small stream or torrent.",
    "The source contains 1,319 unique water-body codes (localid). Three codes occur in two features each; all 1,322 features are preserved and identified individually by the source gid.",
    "The registry includes 1,128 natural, 156 heavily modified and 38 artificial source features, derived from the documented N/H/A code suffix. These counts include repeated water-body codes and do not describe flood-event types.",
    "Official designation does not establish that every reach was field checked, continuously flowing, or mapped without DEM assistance. No per-reach validation or geometry-lineage report was included in these downloads.",
    "Basins and water districts are separate context layers. Their source layer filenames contain 2014 and 2010 respectively; these are not asserted to be their field survey dates or the vintage of the river revision.",
    "The website overview uses generalised river geometry. The river detail and unchanged original ZIPs retain full source geometry; all attributes are preserved.",
    "No river was assigned to a flood event. River counts are independent of flood-event filters and statistics."
  ]
}
