Blue Lake Crater, United States

Maar · 1,136 m (3,727 ft) · US-Oregon

Blue Lake Crater is a maar in the United States, 1,136 m (3,727 ft) high. Its last known eruption: bC (Holocene). NOAA records no significant eruption here.

Blue Lake Crater on the map

Blue Lake Crater and the volcanoes within 300 km, colored by when each last erupted.

Since 1964
1900 to 1963
1800s
AD 1 to 1799
Before AD 1, or undated

Open the live map with volcanic ash advisories and webcams

Now

From the USGS Volcano Hazards Program, read 05:06 UTC. USGS threat ranking: Low Threat.

Unassigned / Unassigned Cascades Volcano Observatory rates Blue Lake Crater at alert level Unassigned, aviation color code Unassigned.

The observatory’s page

The volcano

Type: Maar
Elevation: 1,136 m (3,727 ft)
Country: United States
Region: US-Oregon
Summit: 44.413° N, 121.769° W
Last known eruption: BC (Holocene)
Holocene activity known from: Radiocarbon
Smithsonian volcano number: 322030

Significant eruptions

NOAA records eruptions that killed, did damage, were very large, or set off a tsunami or earthquake.

None on record.

Around it

The volcanoes within 300 km.

Earthquakes near Blue Lake Crater Ash advisories and webcams on the live map

Sources

Volcanoes and significant eruptions from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. Alert levels, color codes and notices from the USGS Volcano Hazards Program and its observatories, public domain. Volcano numbers are the Smithsonian Institution’s Global Volcanism Program’s.