Dams (NID)
Dams with owner type, hazard class, condition and storage.
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About this data
- Method
- Downloaded from the publisher and trimmed to Montana.
- Update frequency
- Periodic
- Last updated
- Oct 6, 2026
- Records
- 3,025
- Coverage
- Statewide.
Records in 55 of 56 counties.
Known gaps
No known gaps beyond what the publisher notes.
Preview
The newest or first 500 records. Click a column heading to sort. Use the filter to find a place or a name.
Fields
| Field | Column | Description |
|---|---|---|
| Fema id | fema_id | |
| Category | category | Data 4 MT category. |
| Name | name | |
| Dam id | dam_id | |
| Nid id | nid_id | |
| Owner | owner | Companies and governments by name; people as “Private individual”. |
| Owner type | owner_type | |
| Hazard class | hazard | NID downstream hazard potential. |
| Condition | condition | |
| County | county | |
| State | state | |
| Year built | year_built | |
| Height ft | height_ft | |
| Storage ac ft | storage_ac_ft | |
| Purpose | purpose | |
| Source link | fema_url | The record on the publisher’s site. |
| Longitude | lon | WGS84 degrees. |
| Latitude | lat | WGS84 degrees. |
Downloads and links
Data 4 MT is an index of public records. It republishes only what Montana and federal agencies make public, with a link to the source on each record. People are shown as “Private individual” on public pages and downloads; companies, trusts held by institutions, and governments keep their names. No document images, sale prices, voter, MVD or wildlife-telemetry data are stored. Verify any record against the publisher’s copy before relying on it.