Davis Lake

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 43.57°N
  • 121.82°W

  • 2163 m
    7095 ft

  • 322100
  • Latitude
  • Longitude

  • Summit

  • Volcano

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Basic Data

Volcano Number

Last Known Eruption



2790 BCE

2163 m / 7095 ft


Volcano Types

Volcanic field

Rock Types

Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone
Continental crust (> 25 km)


Within 5 km
Within 10 km
Within 30 km
Within 100 km

Geological Summary

The Davis Lake area contains three andesitic Holocene cinder cones and associated fresh-looking lava flows along a N-S line at the feet of a group of Pleistocene basaltic-andesite shield volcanoes east of the crest of the Cascade Range, south of the Mount Bachelor volcanic chain. The northernmost lava flow created a natural barrier forming Davis Lake and lies at the western base of the Pleistocene Davis Mountain shield volcano and at the SW end of Wickiup Reservoir. The two southern flows are located in a flat-lying area straddling Crescent Creek between Hamner and Odell Buttes. The middle lava flow was erupted from a small breached cinder cone on the lower southern flank of Hamner Butte and was radiocarbon dated at 4740 years before present. The southernmost lava flow originated from a cone at the ENE base of Odell Butte. All three lava flows were probably erupted at about the same time.


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Luedke R G, Smith R L, 1982. Map showing distribution, composition, and age of late Cenozoic volcanic centers in Oregon and Washington. U S Geol Surv Map, I-1091-D.

Smith R L, Shaw H R, Luedke R G, Russell S L, 1978. Comprehensive tables giving physical data and thermal energy estimates for young igneous systems of the United States. U S Geol Surv Open-File Rpt, 78-925: 1-25.

Wood C A, Kienle J (eds), 1990. Volcanoes of North America. Cambridge, England: Cambridge Univ Press, 354 p.

Eruptive History

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
2790 BCE (?) Unknown Confirmed   Radiocarbon (uncorrected) S flank of Hamner Butte (Black Rock)

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.


Feature Name Feature Type Elevation Latitude Longitude
Cryder Butte Shield volcano 1670 m 43° 46' 0" N 121° 43' 0" W
Davis Mountain Shield volcano 2019 m 43° 38' 0" N 121° 46' 0" W
Hamner Butte Shield volcano 2163 m 43° 34' 0" N 121° 49' 0" W
Little Odell Butte Pyroclastic cone 1689 m 43° 27' 0" N 121° 54' 0" W
Odell Butte Shield volcano 2137 m 43° 28' 0" N 121° 52' 0" W
Pine Butte Pyroclastic cone 1597 m 43° 40' 0" N 121° 51' 0" W
Ringo Butte Shield volcano 1853 m 43° 33' 0" N 121° 45' 0" W
Royce Mountain Shield volcano 1874 m 43° 31' 0" N 121° 54' 0" W

Photo Gallery

A steep-sided, blocky andesitic lava flow from a cinder cone at the north end of Davis Lake is skirted by a road in Deschutes National Forest. This and two other nearby lava flows mark the only known Holocene eruptive activity in the Cascades between Mount Bachelor and Crater Lake.

Photo by Lee Siebert, 1982 (Smithsonian Institution).
The northernmost of the three Davis Lake lava flows originated from the forested cinder cone in the background. The blocky lava flow spread out over a broad area, creating a natural barrier that formed Davis Lake about 4740 years ago.

Photo by Lee Siebert, 1995 (Smithsonian Institution).
Three small cinder cones oriented along a N-S line produced large andesitic lava flows near Davis Lake. The northernmost flow formed the natural dam that created Davis Lake (right). Two other lava flows are located behind Hamner Butte in the background. The middle flow has been radiocarbon dated at about 4740 years ago, and the other two flows are considered to have been erupted at about the same time.

Photo by Lee Siebert, 1995 (Smithsonian Institution).
The middle of three cinder cones and flat-lying andesitic lava flows near Davis Lake is seen here from Black Rock Butte, the southernmost cinder cone, with the Pleistocene andesitic shield volcano of Hamner Butte in the background. The middle lava flow has a radiocarbon age of 4740 years. The cinder cone vent of the middle flow has a flat summit that has been quarried for road aggregate.

Photo by Lee Siebert, 1995 (Smithsonian Institution).
The southernmost of three blocky andesitic lava flows near Davis Lake originated from Black Rock Butte and banks up against the slopes of the Pleistocene andesitic shield volcano Odell Butte. The lava flow is considered to have erupted at about the same time as a nearby lava flow with a radiocarbon age of 4740 years.

Photo by Lee Siebert, 1995 (Smithsonian Institution).
The middle of three flat-lying andesitic lava flows erupted from vents near Davis Lake has been radiocarbon dated at 4740 years. The Pleistocene andesitic shield volcano Odell Butte is in the background, and the southernmost of the three lava flows can be seen in the distance below its left skyline.

Photo by Lee Siebert, 1995 (Smithsonian Institution).

Smithsonian Sample Collections Database

The following 1 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections. Catalog number links will open a window with more information.

Catalog Number Sample Description
NMNH 116702 Andesite

Affiliated Sites

Large Eruptions of Davis Lake Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.