Schema
Obstruction Lines (USACE IENC) / Obstruction Lines (USACE IENC) / v1.0.0
Schema from obstruction-lines-usace-ienc.parquet, gcp-portolan-published, v1.0.0.
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
| Column | Type | Nullable | Nulls | Unique | Description | Examples / Values |
|---|---|---|---|---|---|---|
| geometry | geometry | No | 0 | — | — Range: —Length: — | Examples: — Values: — |
| OBJECTID | integer | No | 0 | — | — Range: 1 to 16Length: — | Examples: 2, 7, 9, 10, 14 Values: — |
| Category_o | string | No | 0 | — | — Range: —Length: 13 | Examples: Boom, Diffuser, Diffuser, Boom, Boom Values: Boom, Diffuser, Ground Tackle |
| Value_of_S | string | No | 0 | — | — Range: —Length: 7 | Examples: Unknown, Unknown, Unknown, Unknown, Unknown Values: Unknown |
| Water_Leve | string | Yes | 1 | — | — Range: —Length: 30 | Examples: Partly Submerged at High Water, Always Dry, Always Dry, Always Dry, Always Under Water/Submerged Values: Always Dry, Always Under Water/Submerged, Partly Submerged at High Water |
| Natural_Su | string | Yes | 16 | — | — Range: —Length: — | Examples: — Values: — |
| Nature_of_ | string | Yes | 16 | — | — Range: —Length: — | Examples: — Values: — |
| Exposition | string | Yes | 15 | — | — Range: —Length: 61 | Examples: Shoaler Than The Range of Depth of the Surrounding Depth Area Values: Shoaler Than The Range of Depth of the Surrounding Depth Area |
| Object_Nam | string | Yes | 8 | — | — Range: —Length: 26 | Examples: London Dam, Winfield Dam, Brenntag Industrial Intake, Trash Deflector, Winfield Dam Values: Brenntag Industrial Intake, Clearon Corp., London Dam, Marmet Dam, Trash Deflector, Winfield Dam |
| Informatio | string | Yes | 10 | — | — Range: —Length: 17 | Examples: Trash Deflector, metal, metal, wooden, Trash/Debris Boom Values: Trash Deflector, Trash/Debris Boom, metal, wooden |
| Scale_Mini | integer | No | 0 | — | — Range: 30000 to 30000Length: — | Examples: 30000, 30000, 30000, 30000, 30000 Values: — |
| Source_Dat | string | No | 0 | — | — Range: —Length: 8 | Examples: 20141210, 20120706, 20130225, 20130304, 20120707 Values: 20120706, 20120707, 20130225, 20130304, 20131114, 20141210, 20170315, 20230109, 20230506 |
| Source_Ind | string | No | 0 | — | — Range: —Length: 69 | Examples: US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey, US,U3,SURVY,2012_SEAS_LIDAR_Mapping_Survey, US,U3,SURVY,2013_SEAS_LIDAR_Mapping_Survey, US,U3,SURVY,2013_SEAS_LIDAR_Mapping_Survey, US,U3,SURVY,2012_SEAS_LIDAR_Mapping_Survey Values: US,U3,SURVY,2012_SEAS_LIDAR_Mapping_Survey, US,U3,SURVY,2013_SEAS_LIDAR_Mapping_Survey, US,U3,SURVY,2014_SEAS_LIDAR_Mapping_Survey, US,U3,SURVY,CELRN Hydrographic Survey IENC-23-014, US,U3,SURVY,NWK_Field_Survey,IENC_23_023, US,U3,SURVY,USACE Louisville McAlpine Pool Field Check - IENC-17-0007 |
| Source_D_1 | string | No | 0 | — | — Range: —Length: 12 | Examples: U37CR149.000, U37KA024.000, U37KA050.000, U37KA065.000, U37OH312.000 Values: U37CR149.000, U37KA024.000, U37KA050.000, U37KA065.000, U37MO000.000, U37OH312.000, U37OH534.000, U37TN005.000 |
| SHAPE_Leng | float | No | 0 | — | — Range: 0.000044050940433 to 0.003168279677492Length: — | Examples: 0.000272919402027, 0.001233368043472, 0.000504415155675, 0.000995345988565, 0.003168279677492 Values: — |
| id | integer | No | 0 | — | — Range: 1 to 16Length: — | Examples: 2, 7, 9, 10, 14 Values: — |