{ "type": "Feature", "stac_version": "1.1.0", "stac_extensions": [ "https://stac-extensions.github.io/raster/v1.1.0/schema.json", "https://stac-extensions.github.io/eo/v1.1.0/schema.json", "https://stac-extensions.github.io/projection/v2.0.0/schema.json" ], "id": "DTM", "geometry": { "type": "Polygon", "coordinates": [ [ [ -77.12237053877654, 38.78548110756395 ], [ -77.12237053877654, 39.00174552082653 ], [ -76.90071308337018, 39.00174552082653 ], [ -76.90071308337018, 38.78548110756395 ], [ -77.12237053877654, 38.78548110756395 ] ] ] }, "bbox": [ -77.12237053877654, 38.78548110756395, -76.90071308337018, 39.00174552082653 ], "properties": { "start_datetime": "2020-06-26T00:00:00+00:00", "end_datetime": "2020-06-30T00:00:00+00:00", "created": "2026-03-19 08:06:06.673791+00:00", "license": "NLPL", "datetime": "2020-06-26T00:00:00Z" }, "links": [ { "rel": "self", "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/dem/DC_WashDC_DEM_2020_9491/stac/DTM.json", "type": "application/json" } ], "assets": { "DTM": { "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/dem/DC_WashDC_DEM_2020_9491/DTM.tif", "type": "image/tiff; application=geotiff; profile=cloud-optimized", "proj:shape": [ 24000, 19200 ], "proj:wkt2": "COMPOUNDCRS[\"NAD83 / Maryland + NAVD88 height\",\n PROJCRS[\"NAD83 / Maryland\",\n BASEGEOGCRS[\"NAD83\",\n DATUM[\"North American Datum 1983\",\n ELLIPSOID[\"GRS 1980\",6378137,298.257222101,\n LENGTHUNIT[\"metre\",1]]],\n PRIMEM[\"Greenwich\",0,\n ANGLEUNIT[\"degree\",0.0174532925199433]],\n ID[\"EPSG\",4269]],\n CONVERSION[\"SPCS83 Maryland zone (meter)\",\n METHOD[\"Lambert Conic Conformal (2SP)\",\n ID[\"EPSG\",9802]],\n PARAMETER[\"Latitude of false origin\",37.6666666666667,\n ANGLEUNIT[\"degree\",0.0174532925199433],\n ID[\"EPSG\",8821]],\n PARAMETER[\"Longitude of false origin\",-77,\n ANGLEUNIT[\"degree\",0.0174532925199433],\n ID[\"EPSG\",8822]],\n PARAMETER[\"Latitude of 1st standard parallel\",39.45,\n ANGLEUNIT[\"degree\",0.0174532925199433],\n ID[\"EPSG\",8823]],\n PARAMETER[\"Latitude of 2nd standard parallel\",38.3,\n ANGLEUNIT[\"degree\",0.0174532925199433],\n ID[\"EPSG\",8824]],\n PARAMETER[\"Easting at false origin\",400000,\n LENGTHUNIT[\"metre\",1],\n ID[\"EPSG\",8826]],\n PARAMETER[\"Northing at false origin\",0,\n LENGTHUNIT[\"metre\",1],\n ID[\"EPSG\",8827]]],\n CS[Cartesian,2],\n AXIS[\"easting (X)\",east,\n ORDER[1],\n LENGTHUNIT[\"metre\",1]],\n AXIS[\"northing (Y)\",north,\n ORDER[2],\n LENGTHUNIT[\"metre\",1]],\n USAGE[\n SCOPE[\"Engineering survey, topographic mapping.\"],\n AREA[\"United States (USA) - Maryland - counties of Allegany; Anne Arundel; Baltimore; Calvert; Caroline; Carroll; Cecil; Charles; Dorchester; Frederick; Garrett; Harford; Howard; Kent; Montgomery; Prince Georges; Queen Annes; Somerset; St Marys; Talbot; Washington; Wicomico; Worcester.\"],\n BBOX[37.97,-79.49,39.73,-74.97]],\n ID[\"EPSG\",26985]],\n VERTCRS[\"NAVD88 height\",\n VDATUM[\"North American Vertical Datum 1988\"],\n CS[vertical,1],\n AXIS[\"gravity-related height (H)\",up,\n LENGTHUNIT[\"metre\",1]],\n USAGE[\n SCOPE[\"Geodesy, engineering survey, topographic mapping.\"],\n AREA[\"Mexico - onshore. United States (USA) - CONUS and Alaska - onshore - Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming.\"],\n BBOX[14.51,172.42,71.4,-66.91]],\n ID[\"EPSG\",5703]]]", "proj:epsg": null, "proj:projjson": { "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "CompoundCRS", "name": "NAD83 / Maryland + NAVD88 height", "components": [ { "type": "ProjectedCRS", "name": "NAD83 / Maryland", "base_crs": { "type": "GeographicCRS", "name": "NAD83", "datum": { "type": "GeodeticReferenceFrame", "name": "North American Datum 1983", "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4269 } }, "conversion": { "name": "SPCS83 Maryland zone (meter)", "method": { "name": "Lambert Conic Conformal (2SP)", "id": { "authority": "EPSG", "code": 9802 } }, "parameters": [ { "name": "Latitude of false origin", "value": 37.6666666666667, "unit": "degree", "id": { "authority": "EPSG", "code": 8821 } }, { "name": "Longitude of false origin", "value": -77, "unit": "degree", "id": { "authority": "EPSG", "code": 8822 } }, { "name": "Latitude of 1st standard parallel", "value": 39.45, "unit": "degree", "id": { "authority": "EPSG", "code": 8823 } }, { "name": "Latitude of 2nd standard parallel", "value": 38.3, "unit": "degree", "id": { "authority": "EPSG", "code": 8824 } }, { "name": "Easting at false origin", "value": 400000, "unit": "metre", "id": { "authority": "EPSG", "code": 8826 } }, { "name": "Northing at false origin", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8827 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "X", "direction": "east", "unit": "metre" }, { "name": "Northing", "abbreviation": "Y", "direction": "north", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 26985 } }, { "type": "VerticalCRS", "name": "NAVD88 height", "datum": { "type": "VerticalReferenceFrame", "name": "North American Vertical Datum 1988" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 5703 } } ] }, "proj:transform": [ 1.0, 0.0, 389400.0, 0.0, -1.0, 148200.0 ], "raster:bands": [ { "data_type": "float32", "nodata": -9999.0, "unit": "metre" } ], "eo:bands": [ { "name": "b1", "description": "gray" } ] } } }