Schema
Landmark Locations (USACE IENC) / Landmark Locations (USACE IENC) / v1.0.0
Schema from landmark-locations-usace-ienc-2.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 552Length: — | Examples: 86, 491, 97, 108, 264 Values: — |
| Category_o | string | No | 0 | — | — Range: —Length: 18 | Examples: Tower, Monuments, Tower, Tower, Tower Values: Chimney, Flagstaff/Flagpole, Flare Stack, Monuments, Obelisk, Radar Scanner, Tower, Windmill |
| Visually_C | string | No | 0 | — | — Range: —Length: 20 | Examples: Visually Conspicuous, Visually Conspicuous, Visually Conspicuous, Visually Conspicuous, Unknown Values: Unknown, Visually Conspicuous |
| Object_Nam | string | Yes | 341 | — | — Range: —Length: 74 | Examples: Unlit Lighthouse, CommNet Cellular Inc./Sioux City MSA Limited Partnership, United States Cellular Operating Company of Knoxville, Cellco Partnership, Cellco Partnership Values: — |
| Function | string | Yes | 529 | — | — Range: —Length: 13 | Examples: Church, Church, Radio, Church, Radio Values: Church, Clock, Cooling, Light Support, Power Station, Radio |
| Height | string | Yes | 552 | — | — Range: —Length: — | Examples: — Values: — |
| Informatio | string | Yes | 312 | — | — Range: —Length: 53 | Examples: Cell Tower, Cell Tower, Antenna, Cell Tower, Cell Tower Values: ANTENNA, Antenna, Cell Tower, Cooling Tower, Historical Landmark of the Lewis and Clark Expedition, Radio/Cell Tower, SMOKESTACK, two chimneys |
| Scale_Mini | integer | No | 0 | — | — Range: 60000 to 60000Length: — | Examples: 60000, 60000, 60000, 60000, 60000 Values: — |
| Source_Dat | string | No | 0 | — | — Range: —Length: 8 | Examples: 20050408, 20221014, 20050412, 20050414, 20240124 Values: — |
| Source_Ind | string | No | 0 | — | — Range: —Length: 49 | Examples: US,U3,graph,USACE_Nashville_SDS, US,U3,SURVY,MVS_Field_Survey,IENC_23_003, US,U3,graph,USACE_Nashville_SDS, US,U3,graph,USACE_Nashville_SDS, US,U3,SURVY,HIFLD_FCC_Datasert_IENC_24_030 Values: — |
| Source_D_1 | string | No | 0 | — | — Range: —Length: 12 | Examples: U37CR149.000, U37UM218.000, U37CR221.000, U37CR307.000, U37OH032.000 Values: — |
| id | integer | No | 0 | — | — Range: 1 to 552Length: — | Examples: 86, 491, 97, 108, 264 Values: — |