---
id: "us_nid_dam_id"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["environment", "geo"]
country: ["US"]
langs: ["common"]
quality: 90
url: "https://registry.apicrafter.io/datatype/us_nid_dam_id"
---

# US National Inventory of Dams ID (NID ID) (`us_nid_dam_id`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Identifier of a dam in the National Inventory of Dams of the US Army Corps of Engineers, assigned by the state dam safety coordinator and never reused. It is the two-letter postal code of the state or territory where the dam lies followed by five characters, usually digits; Virginia uses six digits and South Carolina a letter D and five digits. Saddle dams and dikes share the NID ID of their dam and add a separate other structure ID such as S001.

- Personal data (PII): no
- Categories: Environment (protected areas, biodiversity, water, weather, emissions, waste) (environment), Geographic identifiers (geo)
- Countries: United States (US)
- Languages: Common to most languages (common)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^[A-Z]{2}[0-9A-Z]{5,6}$
```

## Examples

- `NV10122` — Hoover Dam, Nevada; National Inventory of Dams
- `WI00803` — Mississippi River Lock and Dam 8, Wisconsin; Wikidata example
- `VA155002` — Claytor Dam, Virginia; National Inventory of Dams
- `SCD04576` — Lee Nuclear Dam 2, South Carolina; National Inventory of Dams
- `CT00005S02` (invalid example) — NID ID with the other structure ID of a saddle dam appended

## Mappings

- wikidata: `P9439`

## Translations

- ru: Идентификатор плотины в Национальном реестре плотин США (NID ID): Идентификатор плотины в Национальном реестре плотин Инженерных войск армии США. Двухбуквенный код штата и пять или шесть символов.

## Sources

- wikipedia: <https://en.wikipedia.org/wiki/National_Inventory_of_Dams>
- wikidata: <https://www.wikidata.org/wiki/Property:P9439>
- doc: <https://nid.sec.usace.army.mil/>

## Quality

Score 90/100. Missing: detector coverage.

JSON: <https://registry.apicrafter.io/api/v1/datatypes/us_nid_dam_id.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/US/environment/us_nid_dam_id.yaml>