{"links":{"self":"https://hifld.publicenvirodata.org/api/collections/hifld/datasets/warning-signal-stations-usace-ienc/files/warning-signal-stations-usace-ienc","dataset":"https://hifld.publicenvirodata.org/api/collections/hifld/datasets/warning-signal-stations-usace-ienc","collection":"https://hifld.publicenvirodata.org/api/collections/hifld"},"collection":{"name":"HIFLD","slug":"hifld","id":1,"description":"HIFLD (Homeland Infrastructure Foundation-Level Data) datasets","created_at":"2026-02-13T02:52:43.921817","updated_at":"2026-02-13T02:52:43.921841"},"dataset":{"name":"Warning Signal Stations (USACE IENC)","slug":"warning-signal-stations-usace-ienc","tags":{"inventory_name":"warning-signal-stations-usace-ienc","categories":["Transportation Water","Emergency Services"]},"created_at":"2026-02-15T07:09:55.937688","updated_at":"2026-02-15T07:09:55.937713","id":3431,"description":"The USACE IENCs coverage area consists of 7,260 miles across 21 rivers primarily located in the Central United States. IENCs apply to inland waterways that are maintained for navigation by USACE for shallow-draft vessels (e.g., maintained at a depth of 9-14 feet, dependent upon the waterway project authorization). Generally, IENCs are produced for those commercially navigable waterways which the National Oceanic and Atmospheric Administration (NOAA) does not produce Electronic Navigational Charts (ENCs). However, Special Purpose IENCs may be produced in agreement with NOAA. IENC POC: IENC_POC@usace.army.mil","collection_id":1},"file":{"dataset_id":3431,"name":"warning-signal-stations-usace-ienc","id":4574,"description":"The USACE IENCs coverage area consists of 7,260 miles across 21 rivers primarily located in the Central United States. IENCs apply to inland waterways that are maintained for navigation by USACE for shallow-draft vessels (e.g., maintained at a depth of 9-14 feet, dependent upon the waterway project authorization). Generally, IENCs are produced for those commercially navigable waterways which the National Oceanic and Atmospheric Administration (NOAA) does not produce Electronic Navigational Charts (ENCs). However, Special Purpose IENCs may be produced in agreement with NOAA. IENC POC: IENC_POC@usace.army.mil","source_file_path":null,"created_at":"2026-05-19T22:12:21.785334","slug":"warning-signal-stations-usace-ienc","layer_name":null,"file_metadata":null,"updated_at":"2026-05-19T22:12:21.785357","formats":[{"format":{"name":"GeoParquet","id":1,"mime_type":"application/parquet","updated_at":"2026-02-13T02:36:11.179441","format_type":"geoparquet","description":"GeoParquet format for efficient spatial data storage and analysis","created_at":"2026-02-13T02:36:11.179416"},"file_format":{"file_id":4574,"updated_at":"2026-05-19T22:12:22.922670","id":19153,"format_id":1,"created_at":"2026-05-19T22:12:22.922649"},"sources":[{"file_format_id":19153,"id":20239,"created_at":"2026-05-19T22:12:23.103832","storage_location_id":1,"version":"v1.0.0","source_type":"file","references_source_id":null,"updated_at":"2026-06-13T14:16:46.159019","location":{"type":"file","version":"v1","path":"warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/geoparquet/warning-signal-stations-usace-ienc.parquet"},"source_metadata":{"version":"v1","description":null,"size_bytes":37716,"mime_type":null,"feature_count":510,"bounds":[-95.72181,30.836954,-79.544653,42.515641],"geometry_type":"Point","invalid_geometry_count":0,"quality_check_passed":true,"columns_hash":"fd8c1b519e95a622e3166bd2c878a5a241eedf2b488eb3d7876530caead0ce4b","columns":[{"name":"geometry","type":"geometry","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":null,"min":null,"max":null,"length":null,"possible_values":null},{"name":"OBJECTID","type":"integer","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["95","112","389","424","224"],"min":1,"max":510,"length":null,"possible_values":null},{"name":"Category_o","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["Vertical Clearance Indication","High Water Mark","Vertical Clearance Indication","Vertical Clearance Indication","Vertical Clearance Indication"],"min":null,"max":null,"length":29,"possible_values":["Depth Indication","High Water Mark","Vertical Clearance Indication"]},{"name":"Object_Nam","type":"string","description":null,"nullable":true,"num_null_values":467,"num_unique_values":null,"example_values":["Lock 25 Lower Depth Indicator","Tennessee Route 30 Bridge (517.9)","Lock 25 Upper Depth Indicator","Sebree-Beach Grove Bridge","KY 85 (Island-Centertown) Hwy Bridge"],"min":null,"max":null,"length":49,"possible_values":null},{"name":"Informatio","type":"string","description":null,"nullable":true,"num_null_values":450,"num_unique_values":null,"example_values":["Wolcott Kansas I-435 Highway Bridge (383.3)","Kansas City Mo. Hwy I-435 Bridge","Neville Island Bridge (Main Channel) (8.7)","Wolcott Kansas I-435 Highway Bridge (383.3)","Sen. Christopher S. Bond Bridge (98.0)"],"min":null,"max":null,"length":45,"possible_values":null},{"name":"Scale_Mini","type":"integer","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["45000","45000","45000","45000","45000"],"min":45000,"max":45000,"length":null,"possible_values":null},{"name":"Source_Dat","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["20180917","20180917","20140611","20140605","20150115"],"min":null,"max":null,"length":8,"possible_values":null},{"name":"Source_Ind","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["US,U3,SURVY,SWL_Field_Survey,IENC_18_058","US,U3,SURVY,SWL_Field_Survey,IENC_18_058","US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey","US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey","US,U3,SURVY,MVR_Field_Survey,IENC_15_022"],"min":null,"max":null,"length":88,"possible_values":null},{"name":"Source_D_1","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["U37AR186.000","U37AR246.000","U37TN306.000","U37TN564.000","U37IL137.000"],"min":null,"max":null,"length":12,"possible_values":null}]},"url":"https://hifld.publicenvirodata.org/storage/warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/geoparquet/warning-signal-stations-usace-ienc.parquet","storage_uri":"gs://hifld-next-datasets-prod/warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/geoparquet/warning-signal-stations-usace-ienc.parquet","storage_location":{"id":1,"slug":"gcs-hifld-next-datasets-prod","backend_type":"s3","updated_at":"2026-02-13T02:39:54.364528","name":"GCS hifld-next-datasets-prod","description":"Google Cloud Storage production bucket for dataset files","created_at":"2026-02-13T02:39:54.364506","config":{"version":"v1","type":"gcs","base_url":"https://hifld.publicenvirodata.org/storage","bucket":"hifld-next-datasets-prod"}},"links":{"download_zip":"https://hifld.publicenvirodata.org/api/collections/hifld/datasets/warning-signal-stations-usace-ienc/files/warning-signal-stations-usace-ienc/sources/20239/download-zip"}}]},{"format":{"name":"PMTiles","id":2,"mime_type":"application/x-protobuf","updated_at":"2026-02-13T02:36:11.357095","format_type":"pmtiles","description":"PMTiles format for tile serving and web mapping","created_at":"2026-02-13T02:36:11.357073"},"file_format":{"file_id":4574,"updated_at":"2026-05-19T22:12:23.376896","id":19154,"format_id":2,"created_at":"2026-05-19T22:12:23.376874"},"sources":[{"file_format_id":19154,"id":20240,"created_at":"2026-05-19T22:12:23.565109","storage_location_id":1,"version":"v1.0.0","source_type":"file","references_source_id":null,"updated_at":"2026-06-13T14:16:46.470366","location":{"type":"file","version":"v1","path":"warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/pmtiles/warning-signal-stations-usace-ienc.pmtiles"},"source_metadata":{"version":"v1","description":null,"size_bytes":72809,"mime_type":null,"feature_count":510,"bounds":[-95.72181,30.836954,-79.544653,42.515641],"geometry_type":"Point","invalid_geometry_count":0,"quality_check_passed":true,"columns_hash":"fd8c1b519e95a622e3166bd2c878a5a241eedf2b488eb3d7876530caead0ce4b","columns":[{"name":"geometry","type":"geometry","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":null,"min":null,"max":null,"length":null,"possible_values":null},{"name":"OBJECTID","type":"integer","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["95","112","389","424","224"],"min":1,"max":510,"length":null,"possible_values":null},{"name":"Category_o","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["Vertical Clearance Indication","High Water Mark","Vertical Clearance Indication","Vertical Clearance Indication","Vertical Clearance Indication"],"min":null,"max":null,"length":29,"possible_values":["Depth Indication","High Water Mark","Vertical Clearance Indication"]},{"name":"Object_Nam","type":"string","description":null,"nullable":true,"num_null_values":467,"num_unique_values":null,"example_values":["Lock 25 Lower Depth Indicator","Tennessee Route 30 Bridge (517.9)","Lock 25 Upper Depth Indicator","Sebree-Beach Grove Bridge","KY 85 (Island-Centertown) Hwy Bridge"],"min":null,"max":null,"length":49,"possible_values":null},{"name":"Informatio","type":"string","description":null,"nullable":true,"num_null_values":450,"num_unique_values":null,"example_values":["Wolcott Kansas I-435 Highway Bridge (383.3)","Kansas City Mo. Hwy I-435 Bridge","Neville Island Bridge (Main Channel) (8.7)","Wolcott Kansas I-435 Highway Bridge (383.3)","Sen. Christopher S. Bond Bridge (98.0)"],"min":null,"max":null,"length":45,"possible_values":null},{"name":"Scale_Mini","type":"integer","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["45000","45000","45000","45000","45000"],"min":45000,"max":45000,"length":null,"possible_values":null},{"name":"Source_Dat","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["20180917","20180917","20140611","20140605","20150115"],"min":null,"max":null,"length":8,"possible_values":null},{"name":"Source_Ind","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["US,U3,SURVY,SWL_Field_Survey,IENC_18_058","US,U3,SURVY,SWL_Field_Survey,IENC_18_058","US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey","US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey","US,U3,SURVY,MVR_Field_Survey,IENC_15_022"],"min":null,"max":null,"length":88,"possible_values":null},{"name":"Source_D_1","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["U37AR186.000","U37AR246.000","U37TN306.000","U37TN564.000","U37IL137.000"],"min":null,"max":null,"length":12,"possible_values":null}]},"url":"https://hifld.publicenvirodata.org/storage/warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/pmtiles/warning-signal-stations-usace-ienc.pmtiles","storage_uri":"gs://hifld-next-datasets-prod/warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/pmtiles/warning-signal-stations-usace-ienc.pmtiles","storage_location":{"id":1,"slug":"gcs-hifld-next-datasets-prod","backend_type":"s3","updated_at":"2026-02-13T02:39:54.364528","name":"GCS hifld-next-datasets-prod","description":"Google Cloud Storage production bucket for dataset files","created_at":"2026-02-13T02:39:54.364506","config":{"version":"v1","type":"gcs","base_url":"https://hifld.publicenvirodata.org/storage","bucket":"hifld-next-datasets-prod"}},"links":{"download_zip":"https://hifld.publicenvirodata.org/api/collections/hifld/datasets/warning-signal-stations-usace-ienc/files/warning-signal-stations-usace-ienc/sources/20240/download-zip"}}]},{"format":{"name":"GeoPackage","id":4,"mime_type":"application/geopackage+sqlite3","updated_at":"2026-02-15T03:18:57.332796","format_type":"geopackage","description":"GeoPackage format for geospatial data storage and exchange","created_at":"2026-02-15T03:18:57.332771"},"file_format":{"file_id":4574,"updated_at":"2026-05-19T22:12:22.469564","id":19152,"format_id":4,"created_at":"2026-05-19T22:12:22.469542"},"sources":[{"file_format_id":19152,"id":20238,"created_at":"2026-05-19T22:12:22.650444","storage_location_id":1,"version":"v1.0.0","source_type":"file","references_source_id":null,"updated_at":"2026-06-13T14:16:45.843133","location":{"type":"file","version":"v1","path":"warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/geopackage/warning-signal-stations-usace-ienc.gpkg"},"source_metadata":{"version":"v1","description":null,"size_bytes":208896,"mime_type":null,"feature_count":510,"bounds":[-95.72181,30.836954,-79.544653,42.515641],"geometry_type":"Point","invalid_geometry_count":0,"quality_check_passed":true,"columns_hash":"fd8c1b519e95a622e3166bd2c878a5a241eedf2b488eb3d7876530caead0ce4b","columns":[{"name":"geometry","type":"geometry","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":null,"min":null,"max":null,"length":null,"possible_values":null},{"name":"OBJECTID","type":"integer","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["95","112","389","424","224"],"min":1,"max":510,"length":null,"possible_values":null},{"name":"Category_o","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["Vertical Clearance Indication","High Water Mark","Vertical Clearance Indication","Vertical Clearance Indication","Vertical Clearance Indication"],"min":null,"max":null,"length":29,"possible_values":["Depth Indication","High Water Mark","Vertical Clearance Indication"]},{"name":"Object_Nam","type":"string","description":null,"nullable":true,"num_null_values":467,"num_unique_values":null,"example_values":["Lock 25 Lower Depth Indicator","Tennessee Route 30 Bridge (517.9)","Lock 25 Upper Depth Indicator","Sebree-Beach Grove Bridge","KY 85 (Island-Centertown) Hwy Bridge"],"min":null,"max":null,"length":49,"possible_values":null},{"name":"Informatio","type":"string","description":null,"nullable":true,"num_null_values":450,"num_unique_values":null,"example_values":["Wolcott Kansas I-435 Highway Bridge (383.3)","Kansas City Mo. Hwy I-435 Bridge","Neville Island Bridge (Main Channel) (8.7)","Wolcott Kansas I-435 Highway Bridge (383.3)","Sen. Christopher S. Bond Bridge (98.0)"],"min":null,"max":null,"length":45,"possible_values":null},{"name":"Scale_Mini","type":"integer","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["45000","45000","45000","45000","45000"],"min":45000,"max":45000,"length":null,"possible_values":null},{"name":"Source_Dat","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["20180917","20180917","20140611","20140605","20150115"],"min":null,"max":null,"length":8,"possible_values":null},{"name":"Source_Ind","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["US,U3,SURVY,SWL_Field_Survey,IENC_18_058","US,U3,SURVY,SWL_Field_Survey,IENC_18_058","US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey","US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey","US,U3,SURVY,MVR_Field_Survey,IENC_15_022"],"min":null,"max":null,"length":88,"possible_values":null},{"name":"Source_D_1","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["U37AR186.000","U37AR246.000","U37TN306.000","U37TN564.000","U37IL137.000"],"min":null,"max":null,"length":12,"possible_values":null}]},"url":"https://hifld.publicenvirodata.org/storage/warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/geopackage/warning-signal-stations-usace-ienc.gpkg","storage_uri":"gs://hifld-next-datasets-prod/warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/geopackage/warning-signal-stations-usace-ienc.gpkg","storage_location":{"id":1,"slug":"gcs-hifld-next-datasets-prod","backend_type":"s3","updated_at":"2026-02-13T02:39:54.364528","name":"GCS hifld-next-datasets-prod","description":"Google Cloud Storage production bucket for dataset files","created_at":"2026-02-13T02:39:54.364506","config":{"version":"v1","type":"gcs","base_url":"https://hifld.publicenvirodata.org/storage","bucket":"hifld-next-datasets-prod"}},"links":{"download_zip":"https://hifld.publicenvirodata.org/api/collections/hifld/datasets/warning-signal-stations-usace-ienc/files/warning-signal-stations-usace-ienc/sources/20238/download-zip"}}]},{"format":{"name":"Shapefile","id":5,"mime_type":"application/zip","updated_at":"2026-02-15T03:18:57.546794","format_type":"shapefile","description":"ESRI Shapefile format for geospatial vector data","created_at":"2026-02-15T03:18:57.546771"},"file_format":{"file_id":4574,"updated_at":"2026-05-19T22:12:23.860346","id":19155,"format_id":5,"created_at":"2026-05-19T22:12:23.860282"},"sources":[{"file_format_id":19155,"id":20241,"created_at":"2026-05-19T22:12:24.247116","storage_location_id":1,"version":"v1.0.0","source_type":"file","references_source_id":null,"updated_at":"2026-06-13T14:16:46.773555","location":{"type":"file","version":"v1","path":"warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/shapefile/warning-signal-stations-usace-ienc.zip"},"source_metadata":{"version":"v1","description":null,"size_bytes":16235,"mime_type":null,"feature_count":510,"bounds":[-95.72181,30.836954,-79.544653,42.515641],"geometry_type":"Point","invalid_geometry_count":0,"quality_check_passed":true,"columns_hash":"fd8c1b519e95a622e3166bd2c878a5a241eedf2b488eb3d7876530caead0ce4b","columns":[{"name":"geometry","type":"geometry","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":null,"min":null,"max":null,"length":null,"possible_values":null},{"name":"OBJECTID","type":"integer","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["95","112","389","424","224"],"min":1,"max":510,"length":null,"possible_values":null},{"name":"Category_o","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["Vertical Clearance Indication","High Water Mark","Vertical Clearance Indication","Vertical Clearance Indication","Vertical Clearance Indication"],"min":null,"max":null,"length":29,"possible_values":["Depth Indication","High Water Mark","Vertical Clearance Indication"]},{"name":"Object_Nam","type":"string","description":null,"nullable":true,"num_null_values":467,"num_unique_values":null,"example_values":["Lock 25 Lower Depth Indicator","Tennessee Route 30 Bridge (517.9)","Lock 25 Upper Depth Indicator","Sebree-Beach Grove Bridge","KY 85 (Island-Centertown) Hwy Bridge"],"min":null,"max":null,"length":49,"possible_values":null},{"name":"Informatio","type":"string","description":null,"nullable":true,"num_null_values":450,"num_unique_values":null,"example_values":["Wolcott Kansas I-435 Highway Bridge (383.3)","Kansas City Mo. Hwy I-435 Bridge","Neville Island Bridge (Main Channel) (8.7)","Wolcott Kansas I-435 Highway Bridge (383.3)","Sen. Christopher S. Bond Bridge (98.0)"],"min":null,"max":null,"length":45,"possible_values":null},{"name":"Scale_Mini","type":"integer","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["45000","45000","45000","45000","45000"],"min":45000,"max":45000,"length":null,"possible_values":null},{"name":"Source_Dat","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["20180917","20180917","20140611","20140605","20150115"],"min":null,"max":null,"length":8,"possible_values":null},{"name":"Source_Ind","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["US,U3,SURVY,SWL_Field_Survey,IENC_18_058","US,U3,SURVY,SWL_Field_Survey,IENC_18_058","US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey","US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey","US,U3,SURVY,MVR_Field_Survey,IENC_15_022"],"min":null,"max":null,"length":88,"possible_values":null},{"name":"Source_D_1","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["U37AR186.000","U37AR246.000","U37TN306.000","U37TN564.000","U37IL137.000"],"min":null,"max":null,"length":12,"possible_values":null}]},"url":"https://hifld.publicenvirodata.org/storage/warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/shapefile/warning-signal-stations-usace-ienc.zip","storage_uri":"gs://hifld-next-datasets-prod/warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/shapefile/warning-signal-stations-usace-ienc.zip","storage_location":{"id":1,"slug":"gcs-hifld-next-datasets-prod","backend_type":"s3","updated_at":"2026-02-13T02:39:54.364528","name":"GCS hifld-next-datasets-prod","description":"Google Cloud Storage production bucket for dataset files","created_at":"2026-02-13T02:39:54.364506","config":{"version":"v1","type":"gcs","base_url":"https://hifld.publicenvirodata.org/storage","bucket":"hifld-next-datasets-prod"}},"links":{"download_zip":"https://hifld.publicenvirodata.org/api/collections/hifld/datasets/warning-signal-stations-usace-ienc/files/warning-signal-stations-usace-ienc/sources/20241/download-zip"}}]},{"format":{"name":"GeoJSON","id":6,"mime_type":"application/geo+json","updated_at":"2026-02-15T03:18:57.713833","format_type":"geojson","description":"GeoJSON format for encoding geographic data structures","created_at":"2026-02-15T03:18:57.713811"},"file_format":{"file_id":4574,"updated_at":"2026-05-19T22:12:21.999273","id":19151,"format_id":6,"created_at":"2026-05-19T22:12:21.999252"},"sources":[{"file_format_id":19151,"id":20237,"created_at":"2026-05-19T22:12:22.188981","storage_location_id":1,"version":"v1.0.0","source_type":"file","references_source_id":null,"updated_at":"2026-06-13T14:16:45.530024","location":{"type":"file","version":"v1","path":"warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/geojson/warning-signal-stations-usace-ienc.geojson"},"source_metadata":{"version":"v1","description":null,"size_bytes":185060,"mime_type":null,"feature_count":510,"bounds":[-95.72181,30.836954,-79.544653,42.515641],"geometry_type":"Point","invalid_geometry_count":0,"quality_check_passed":true,"columns_hash":"fd8c1b519e95a622e3166bd2c878a5a241eedf2b488eb3d7876530caead0ce4b","columns":[{"name":"geometry","type":"geometry","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":null,"min":null,"max":null,"length":null,"possible_values":null},{"name":"OBJECTID","type":"integer","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["95","112","389","424","224"],"min":1,"max":510,"length":null,"possible_values":null},{"name":"Category_o","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["Vertical Clearance Indication","High Water Mark","Vertical Clearance Indication","Vertical Clearance Indication","Vertical Clearance Indication"],"min":null,"max":null,"length":29,"possible_values":["Depth Indication","High Water Mark","Vertical Clearance Indication"]},{"name":"Object_Nam","type":"string","description":null,"nullable":true,"num_null_values":467,"num_unique_values":null,"example_values":["Lock 25 Lower Depth Indicator","Tennessee Route 30 Bridge (517.9)","Lock 25 Upper Depth Indicator","Sebree-Beach Grove Bridge","KY 85 (Island-Centertown) Hwy Bridge"],"min":null,"max":null,"length":49,"possible_values":null},{"name":"Informatio","type":"string","description":null,"nullable":true,"num_null_values":450,"num_unique_values":null,"example_values":["Wolcott Kansas I-435 Highway Bridge (383.3)","Kansas City Mo. Hwy I-435 Bridge","Neville Island Bridge (Main Channel) (8.7)","Wolcott Kansas I-435 Highway Bridge (383.3)","Sen. Christopher S. Bond Bridge (98.0)"],"min":null,"max":null,"length":45,"possible_values":null},{"name":"Scale_Mini","type":"integer","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["45000","45000","45000","45000","45000"],"min":45000,"max":45000,"length":null,"possible_values":null},{"name":"Source_Dat","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["20180917","20180917","20140611","20140605","20150115"],"min":null,"max":null,"length":8,"possible_values":null},{"name":"Source_Ind","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["US,U3,SURVY,SWL_Field_Survey,IENC_18_058","US,U3,SURVY,SWL_Field_Survey,IENC_18_058","US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey","US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey","US,U3,SURVY,MVR_Field_Survey,IENC_15_022"],"min":null,"max":null,"length":88,"possible_values":null},{"name":"Source_D_1","type":"string","description":null,"nullable":false,"num_null_values":0,"num_unique_values":null,"example_values":["U37AR186.000","U37AR246.000","U37TN306.000","U37TN564.000","U37IL137.000"],"min":null,"max":null,"length":12,"possible_values":null}]},"url":"https://hifld.publicenvirodata.org/storage/warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/geojson/warning-signal-stations-usace-ienc.geojson","storage_uri":"gs://hifld-next-datasets-prod/warning-signal-stations-usace-ienc/warning-signal-stations-usace-ienc/v1.0.0/geojson/warning-signal-stations-usace-ienc.geojson","storage_location":{"id":1,"slug":"gcs-hifld-next-datasets-prod","backend_type":"s3","updated_at":"2026-02-13T02:39:54.364528","name":"GCS hifld-next-datasets-prod","description":"Google Cloud Storage production bucket for dataset files","created_at":"2026-02-13T02:39:54.364506","config":{"version":"v1","type":"gcs","base_url":"https://hifld.publicenvirodata.org/storage","bucket":"hifld-next-datasets-prod"}},"links":{"download_zip":"https://hifld.publicenvirodata.org/api/collections/hifld/datasets/warning-signal-stations-usace-ienc/files/warning-signal-stations-usace-ienc/sources/20237/download-zip"}}]}]}}