{
  "stac_version": "1.0.0",
  "type": "Catalog",
  "id": "india-stac-catalog",
  "title": "India Open Maps STAC Catalog",
  "description": "A STAC catalog serving geospatial collections from geoparquet files",
  "links": [
    {
      "rel": "self",
      "type": "application/json",
      "href": "./stac_catalog.json"
    },
    {
      "rel": "root",
      "type": "application/json",
      "href": "./stac_catalog.json"
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./india-topo-50k",
      "title": "SOI Open series maps 50k",
      "geoparquet": "https://github.com/ramSeraph/india_topo_maps/releases/download/50k-osm-georef/SOI_OSM_50k.stac.parquet",
      "geoparquet_sha256": "a2083149ca0d531899187639d936993249b1f626dbf9c6c6a2b2a47cb373cd09",
      "collection": {
        "type": "Collection",
        "id": "india-topo-50k",
        "stac_version": "1.1.0",
        "description": "Survey of India 1:50,000 Open Series Maps. Georeferenced map sheets with original scans. Item datetime is the catalog indexing date; survey and imagery acquisition dates are unknown.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://onlinemaps.surveyofindia.gov.in/",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Catalog indexing date, not survey or imagery acquisition.",
        "item_count": 4517,
        "title": "SOI Open series maps 50k",
        "extent": {
          "spatial": {
            "bbox": [
              [
                68.25,
                6.75,
                97,
                35.5
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2026-11-01T00:00:00Z",
                "2026-11-01T00:00:00Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "SOI_OSM_50k.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./india-topo-25k-nhp",
      "title": "SOI Flood Risk Area Maps 25k",
      "geoparquet": "https://github.com/ramSeraph/india_topo_maps/releases/download/25k-nhp-georef/SOI_NHP_25k.stac.parquet",
      "geoparquet_sha256": "305a337dae5238f12b99bfcd079de4890d1b4baadf18a27499f43759ba111c65",
      "collection": {
        "type": "Collection",
        "id": "india-topo-25k-nhp",
        "stac_version": "1.1.0",
        "description": "Survey of India 1:25,000 Flood Risk Area Maps for the National Hydrology Project. Georeferenced map sheets with original scans. Item datetime is the publication date of the georeferenced collection; survey and imagery dates are unknown.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://onlinemaps.surveyofindia.gov.in/Digital_Product_Show.aspx",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Publication of the georeferenced collection, not survey or imagery acquisition.",
        "item_count": 4582,
        "title": "SOI Flood Risk Area Maps 25k",
        "extent": {
          "spatial": {
            "bbox": [
              [
                72.125,
                14.375,
                97.25,
                35.25
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2025-09-14T09:10:07Z",
                "2025-09-14T09:10:07Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "SOI_NHP_25k.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./nepal-topo-jica",
      "title": "Nepal JICA Topographic Maps",
      "geoparquet": "https://github.com/ramSeraph/nepal_survey_maps/releases/download/jica-georef/Nepal_JICA.stac.parquet",
      "collection": {
        "type": "Collection",
        "id": "nepal-topo-jica",
        "stac_version": "1.1.0",
        "description": "Georeferenced JICA and Nepal Survey Department maps sourced through The Maze and Pahar. Item datetime is the publication date of the georeferenced release, not the survey or imagery acquisition date.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://www.maze.com.np/Maps/Topo-Nepal",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Publication of the georeferenced release, not survey or imagery acquisition.",
        "item_count": 81,
        "title": "Nepal JICA Topographic Maps",
        "extent": {
          "spatial": {
            "bbox": [
              [
                82.6025808,
                27.3260287,
                84.5052219,
                28.3556148
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2025-06-22T20:38:27Z",
                "2025-06-22T20:38:27Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "Nepal_JICA.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./nepal-china-border-1979",
      "title": "Nepal\u2013China Border Alignment Maps 1979",
      "geoparquet": "https://github.com/ramSeraph/nepal_survey_maps/releases/download/border-georef/Nepal_Border_1979.stac.parquet",
      "collection": {
        "type": "Collection",
        "id": "nepal-china-border-1979",
        "stac_version": "1.1.0",
        "description": "Georeferenced maps of the 1979 Nepal\u2013China border alignment, sourced from Pahar. Item datetime is the publication date of the georeferenced release, not the survey or imagery acquisition date.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://pahar.in",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Publication of the georeferenced release, not survey or imagery acquisition.",
        "item_count": 57,
        "title": "Nepal\u2013China Border Alignment Maps 1979",
        "extent": {
          "spatial": {
            "bbox": [
              [
                80.9666667,
                27.7,
                88.25,
                30.4916667
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2025-08-13T14:28:01Z",
                "2025-08-13T14:28:01Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "Nepal_Border_1979.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./goa-czmp-2019-4k",
      "title": "Goa CZMP 2019 Maps 4k",
      "geoparquet": "https://github.com/ramSeraph/india_topo_maps/releases/download/4k-goa-2019-czmp-georef/CZMP_2019_Goa_4k.stac.parquet",
      "collection": {
        "type": "Collection",
        "id": "goa-czmp-2019-4k",
        "stac_version": "1.1.0",
        "description": "Georeferenced 1:4,000 Goa Coastal Zone Management Plan 2019 map sheets, prepared by NCESS. Item datetime is the publication date of the georeferenced release, not the survey or imagery acquisition date.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://github.com/ramSeraph/india_topo_maps/releases/tag/4k-goa-2019-czmp-orig",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Publication of the georeferenced release, not survey or imagery acquisition.",
        "item_count": 254,
        "title": "Goa CZMP 2019 Maps 4k",
        "extent": {
          "spatial": {
            "bbox": [
              [
                73.6755252,
                14.899788,
                74.1292219,
                15.8139046
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2026-02-23T17:06:59Z",
                "2026-02-23T17:06:59Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "CZMP_2019_Goa_4k.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./myanmar-topo-50k",
      "title": "Myanmar Topographic Maps 50k",
      "geoparquet": "https://github.com/ramSeraph/myanmar_survey_maps/releases/download/50k-georef/Myanmar_50k.stac.parquet",
      "geoparquet_sha256": "ef6c9845096795b0ac425392fe48f29e9df3e358f282e548a76da7a8eb17f191",
      "collection": {
        "type": "Collection",
        "id": "myanmar-topo-50k",
        "stac_version": "1.1.0",
        "description": "Georeferenced 1:50,000 maps of Myanmar from the Old Survey of India Maps Collection and the Internet Archive UTM maps of Burma / Myanmar collection. Item datetime is the publication date of the georeferenced release, not the survey or imagery acquisition date.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://github.com/ramSeraph/myanmar_survey_maps/releases/tag/50k-orig",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Publication of the georeferenced release, not survey or imagery acquisition.",
        "item_count": 1001,
        "title": "Myanmar Topographic Maps 50k",
        "extent": {
          "spatial": {
            "bbox": [
              [
                91.9973569,
                9.5018978,
                101.2461943,
                28.7503558
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2025-06-25T21:03:18Z",
                "2025-06-25T21:03:18Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "Myanmar_50k.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./nepal-topo-survey",
      "title": "Nepal Survey Department Topographic Maps",
      "geoparquet": "https://github.com/ramSeraph/nepal_survey_maps/releases/download/survey-georef/Nepal_Survey.stac.parquet",
      "geoparquet_sha256": "1428127673620e01db34108f67300d932f018c125825ac124c189b49401d5a59",
      "collection": {
        "type": "Collection",
        "id": "nepal-topo-survey",
        "stac_version": "1.1.0",
        "description": "Georeferenced Nepal Survey Department maps sourced through The Maze and Pahar. Item datetime is the publication date of the georeferenced release, not the survey or imagery acquisition date.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://www.maze.com.np/Maps/Topo-Nepal",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Publication of the georeferenced release, not survey or imagery acquisition.",
        "item_count": 619,
        "title": "Nepal Survey Department Topographic Maps",
        "extent": {
          "spatial": {
            "bbox": [
              [
                79.9983311,
                26.2503476,
                88.247283,
                30.4998791
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2025-06-22T20:46:28Z",
                "2025-06-22T20:46:28Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "Nepal_Survey.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./cartodem-v3r1-egm2008",
      "title": "CartoDEM v3r1 30m EGM2008 Elevation",
      "geoparquet": "https://github.com/ramSeraph/indian_land_features/releases/download/cartodem-30m-v3r1/Bhuvan_CartoDEM_v3r1_EGM2008.stac.parquet",
      "geoparquet_sha256": "88d0ca55ff13e132f2c695a2a100ffce36b812c34a2734e334d93a9fbf8fb4c2",
      "collection": {
        "type": "Collection",
        "id": "cartodem-v3r1-egm2008",
        "stac_version": "1.1.0",
        "description": "543 native-resolution Float32 CartoDEM v3r1 COGs in EPSG:4326, with heights converted to EGM2008, Copernicus GLO-30 ocean masking and experimental river flattening. River elevations are estimated from corrected CartoDEM; existing lake treatment is retained. NoData is -255. River flattening has documented gradient limitations. Item datetime is the catalog indexing date, not acquisition.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://github.com/ramSeraph/indian_land_features/releases/tag/cartodem-30m-v3r1",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Catalog indexing date, not survey or imagery acquisition.",
        "item_count": 543,
        "title": "CartoDEM v3r1 30m EGM2008 Elevation",
        "extent": {
          "spatial": {
            "bbox": [
              [
                59.9998611,
                8.0001389,
                97.9998611,
                39.0001389
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2026-11-01T20:51:32Z",
                "2026-11-01T20:51:32Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "Bhuvan_CartoDEM_v3r1_EGM2008.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./world-topo-american-onc",
      "title": "Operational Navigation Charts 1m",
      "geoparquet": "https://github.com/ramSeraph/american_world_topo_maps/releases/download/onc-georef/ONC.stac.parquet",
      "geoparquet_sha256": "daba49915ef1b1d73fe75664f115d1b2f450fa8890974ea5a8f95e329d92806d",
      "collection": {
        "type": "Collection",
        "id": "world-topo-american-onc",
        "stac_version": "1.1.0",
        "description": "Georeferenced Operational Navigation Charts from the Perry-Casta\u00f1eda Library Map Collection and Mapstor Archive. Item datetime is the publication date of the georeferenced release, not the survey or imagery acquisition date.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://github.com/ramSeraph/american_world_topo_maps/releases/tag/onc-orig",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Publication of the georeferenced release, not survey or imagery acquisition.",
        "item_count": 281,
        "title": "Operational Navigation Charts 1m",
        "extent": {
          "spatial": {
            "bbox": [
              [
                -180,
                -64,
                180,
                84
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2025-08-22T22:12:22Z",
                "2025-08-22T22:12:22Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "ONC.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./world-topo-american-tpc",
      "title": "Tactical Pilotage Charts 500k",
      "geoparquet": "https://github.com/ramSeraph/american_world_topo_maps/releases/download/tpc-georef/TPC.stac.parquet",
      "geoparquet_sha256": "b4ef885cf61ff7707f144a10d3a1db5a8e46b43422bf57650fbb79815612d776",
      "collection": {
        "type": "Collection",
        "id": "world-topo-american-tpc",
        "stac_version": "1.1.0",
        "description": "Georeferenced Tactical Pilotage Charts from the Perry-Casta\u00f1eda Library Map Collection and Mapstor Archive. Item datetime is the publication date of the georeferenced release, not the survey or imagery acquisition date.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://github.com/ramSeraph/american_world_topo_maps/releases/tag/tpc-orig",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Publication of the georeferenced release, not survey or imagery acquisition.",
        "item_count": 665,
        "title": "Tactical Pilotage Charts 500k",
        "extent": {
          "spatial": {
            "bbox": [
              [
                -180,
                -64,
                180,
                84
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2025-08-26T08:42:41Z",
                "2025-08-26T08:42:41Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "TPC.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./world-topo-soviet-1m",
      "title": "Soviet Genshtab 1m Topographic Maps",
      "geoparquet": "https://github.com/ramSeraph/russian_world_topo_maps/releases/download/1m-gs-georef/Soviet_GS_1m.stac.parquet",
      "collection": {
        "type": "Collection",
        "id": "world-topo-soviet-1m",
        "stac_version": "1.1.0",
        "description": "Georeferenced Soviet General Staff topographic maps at the 1m scale, with source sheet metadata and original scans where available. Item datetime is the publication date of the georeferenced release, not the survey or imagery acquisition date.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://github.com/ramSeraph/russian_world_topo_maps/releases/tag/1m-gs-orig",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Publication of the georeferenced release, not survey or imagery acquisition.",
        "item_count": 301,
        "title": "Soviet Genshtab 1m Topographic Maps",
        "extent": {
          "spatial": {
            "bbox": [
              [
                -179.9972546,
                -48.0008543,
                180,
                84.0012244
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2025-10-15T18:41:37Z",
                "2025-10-15T18:41:37Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "Soviet_GS_1m.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./world-topo-american-ams",
      "title": "Army Map Service Topographic Maps 250k",
      "geoparquet": "https://github.com/ramSeraph/american_world_topo_maps/releases/download/ams-georef/AMS_250k.stac.parquet",
      "geoparquet_sha256": "9f7bd5034f5d2d9eba36a756e8c5bef472148aa26cd0facced239836c7c9e553",
      "collection": {
        "type": "Collection",
        "id": "world-topo-american-ams",
        "stac_version": "1.1.0",
        "description": "Georeferenced Army Map Service 1:250,000 sheets from multiple series. Source scans were collected through the Perry-Casta\u00f1eda Library and Christopher Thiry\u2019s indexes. Footprints are derived from the GeoTIFF extents. Item datetime is publication of the georeferenced release, not survey or imagery acquisition.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://github.com/ramSeraph/american_world_topo_maps/releases/tag/ams-orig",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Publication of the georeferenced release, not survey or imagery acquisition.",
        "item_count": 1130,
        "title": "Army Map Service Topographic Maps 250k",
        "extent": {
          "spatial": {
            "bbox": [
              [
                31.50012,
                -12,
                154.3808649,
                54.00012
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2025-06-28T20:07:02Z",
                "2025-06-28T20:07:02Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "AMS_250k.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
            ]
          }
        }
      }
    },
    {
      "rel": "child",
      "type": "application/json",
      "href": "./world-topo-soviet-25k",
      "title": "Soviet Genshtab 25k Topographic Maps",
      "geoparquet": "https://github.com/ramSeraph/russian_world_topo_maps/releases/download/25k-gs-georef/Soviet_GS_25k.stac.parquet",
      "geoparquet_sha256": "d9775cb7e0de536a51d3ed5e102bcac38a736c5544fd9a54a4fdfb6815e922a7",
      "collection": {
        "type": "Collection",
        "id": "world-topo-soviet-25k",
        "stac_version": "1.1.0",
        "description": "Georeferenced Soviet General Staff topographic maps at the 25k scale, with source sheet metadata and original scans where available. Item datetime is the publication date of the georeferenced release, not the survey or imagery acquisition date.",
        "links": [
          {
            "rel": "derived_from",
            "href": "https://github.com/ramSeraph/russian_world_topo_maps/releases/tag/25k-gs-orig",
            "title": "Source"
          }
        ],
        "iomaps:datetime_description": "Publication of the georeferenced release, not survey or imagery acquisition.",
        "item_count": 3050,
        "title": "Soviet Genshtab 25k Topographic Maps",
        "extent": {
          "spatial": {
            "bbox": [
              [
                13.9980414,
                42.0002098,
                143.5014487,
                67.2501209
              ]
            ]
          },
          "temporal": {
            "interval": [
              [
                "2025-10-26T04:42:17Z",
                "2025-10-26T04:42:17Z"
              ]
            ]
          }
        },
        "license": "other",
        "assets": {
          "index": {
            "href": "Soviet_GS_25k.stac.parquet",
            "type": "application/vnd.apache.parquet",
            "roles": [
              "metadata"
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