---
title: "Access U.S. Geological Survey 3DEP raster datasets including 1m, 1/3 arc-second (10m), 1 arc-second (30m) Digital Elevation Model. Note: 1m DEM is currently restricted to academic users. Requests are limited to 225,000 km² for USGS30m, 25,000 km² for USGS10m, 250 km² for USGS1m data. This API service relies on USGS resources. OpenTopography does not control the availability or performance of this service."
method: GET
path: "/usgsdem"
tags: ["Public"]
---

# Access U.S. Geological Survey 3DEP raster datasets including 1m, 1/3 arc-second (10m), 1 arc-second (30m) Digital Elevation Model. Note: 1m DEM is currently restricted to academic users. Requests are limited to 225,000 km² for USGS30m, 25,000 km² for USGS10m, 250 km² for USGS1m data. This API service relies on USGS resources. OpenTopography does not control the availability or performance of this service.

`GET /usgsdem`

## Request

- Base URL: `https://portal.opentopography.org/API`
- URL: `https://portal.opentopography.org/API/usgsdem`
- Auth: none declared
- TypeScript: <https://skmtc.dev/opentopography/apis/opentopography-api/docs/usgsdem/get.ts> (a function with typed inputs; its response is checked against the schema)

## Query parameters

- `datasetName` 'USGS30m' | 'USGS10m' | 'USGS1m', required
- `south` number, required
- `north` number, required
- `west` number, required
- `east` number, required
- `outputFormat` 'GTiff' | 'AAIGrid' | 'HFA'
- `API_Key` string, required

## Response `200`

OK

## Other responses

- `204`: No Data
- `400`: Bad request
- `401`: Unauthorized
- `500`: Internal error

---

[API](https://skmtc.dev/opentopography/apis/opentopography-api.md) - [All operations](https://skmtc.dev/opentopography/apis/opentopography-api/llms.txt) - [OpenAPI document](https://skmtc.dev/opentopography/apis/opentopography-api/revisions/32d54a7631c9?raw)