Crater Lake Oregon

CURRENT 1997 HAZARDS REPORT: Volcano and Earthquake Hazards in the Crater Lake Region, Oregon -- 1997 Hazards Assessment Report ... [Read More]

CVO Menu - Crater Lake National Park, Oregon
Generous amounts of winter snow, averaging 533 inches(1,354 cm) per year, supply the lake with water. There are noinlets or outlets to the lake. Crater Lake, at 1,958 feet (597meters) deep, is the seventh deepest lake in the world and thedeepest in the United States. Evaporation and seepageprevent the lake from becoming any deeper.The lake averages more than five miles (8 km) in diameter,and is surrounded by steep rock walls that rise up to 2000 feet(600 meters) above the lake's surface. ... [Read More]

CVO Website - Crater Lake, Oregon
Crater Lake Caldera and Mount Mazama Volcano Geographic Setting Geologic Setting Crater Lake History Mount Mazama Pre-Climactic Eruption - Mount Mazama The Climactic Eruption - Formation of Crater Lake Caldera Mazama Ash Post-Climactic Eruption Activity - Wizard Island and Merriam Cone Hydrothermal Activity Volcano and Hydrologic Monitoring Crater Lake National Park Crater Lake National Park - Points of Interest ...

William Gladstone Steel devoted his life and fortune to the establishment andmanagement of Crater Lake National Park. His preoccupation with the lake began in1870. In his efforts to bring recognition to the park, he participated in lake surveys thatprovided scientific support. He named many of the lake's landmarks, including WizardIsland, Llao Rock, and Skell Head. Steel's dream was realized on May 22, 1902 whenPresident Theodore Roosevelt signed the bill giving Crater Lake national park status.And because of Steel's involvement, Crater Lake Lodge was opened in 1915 and theRim Drive was completed in 1918. ... [Read More]

CMG Maps Bottom of Crater Lake, Oregon
Jim Gardner, Pete Dartnell, and post-doc Laurent Hellequin (MPFC) completed a high-resolution multibeam map of the bathymetry of Crater Lake, in Crater Lake National Park, Ore, in early August. They worked with Larry Mayer of the University of New Hampshire, four contractors from C&C Technologies, Inc., of Lafayette, La, and two rangers from Crater Lake National Park. The plan to map the lake bottom was initiated last year by Mac Brock of the National Park Service, which partnered with the USGS to fund the mapping. ... [Read More]

EO Newsroom: New Images - Crater Lake, Oregon
Crater Lake, a volcanic caldera in South Central Oregon’s Cascade Mountains, boasts breathtaking scenery, created about 7,700 years ago with the volcanic eruption and subsequent collapse of the summit of Mt. Mazama. Today, the crater, about 8 km wide, contains the deepest lake in the United States — nearly 600 m (2000 ft) deep. The main source of the water in the lake is the annual snowfall of over 1300 cm (500 inches). When this image was taken from the International Space Station on January 6, 2003, nearly 180 cm (70 inches) of snow covered the ground. ... [Read More]

CRATER LAKE NATIONAL PARK: Expanded Home Page
Few places on earth command overwhelming awe from observers, butCrater Lake, in south central Oregon, certainly does. Even in a regionof volcanic wonders, Crater Lake can only be described in superlatives.Stories of the deep blue lake can never prepare visitors for their firstbreathtaking look from the brink of this 6 mile wide caldera which wascreated by the eruption and collapse of Mt. Mazama almost 7,000 yearsago. Even seasoned travelers gasp at the twenty-mile circle of cliffs,tinted in subtle shades and fringed with hemlock, fir, and pine: allthis in a lake of indescribable blue. ... [Read More]

Crater Lake National Park: Klamath Indians (Introduction)
Crater Lake ...

Klamath territory centered on Upper Klamath Lake, Klamath Marsh, andthe Williamson River. Here most of the permanent villages were found,with some additional settlements located in the uplands to the east,along the Sprague River Seasonal camps, in contrast, were "establishedover a much wider territory, as far, it would seem, as the naturallimits of [the Klamath Basin] drainage area" (Spier 1930:8). To thenorth the Klamath ranged to the headwaters of the Deschutes River, tothe east some seventy miles to the escarpment above Summer and SilverLakes, and to the west to the peaks of the Cascades (Stern n.d.:8).Spier noted that "the wide plain south of Klamath Falls seems to havebeen unoccupied," though during the spring fishing the Klamath and Modoctribes met on Lost River, the Klamath occupying the northern, and theModoc occupying the southern bank of that river (Spier 1930:9). ... [Read More]

CVO Website - Bacon, et.al., 1997,Volcano and Earthquake Hazards in the Crater Lake Region
Crater Lake National Park is visited by about500,000 people each year, with heaviest use during thesummer months. Crater Lake partially fills a type ofvolcanic depression called a caldera that formed bycollapse of a 12,000 foot volcano known as MountMazama during an enormous pyroclastic eruptionapproximately 7,700 years ago. Although this Cascadevolcano does not directly threaten large populationcenters, it does pose a hazard to facilities and people atCrater Lake National Park and to the majortransportation corridor east of the Cascades. Theultimate causes of volcanic activity at all Cascadevolcanic centers are linked by common processes.However, Crater Lake is unique in many regards, andpotential effects of future activity cannot be anticipatedby analogy with past eruptions there or at other Cascadevolcanoes. Profound changes occurred at Crater Lakeabout 7,700 years ago that affect the type of eruptionsthat can occur and the consequences of such events forthe surrounding area. This r ... [Read More]

Crater Lake National Park: Klamath Indians (Belief and Ritual of Crater Lake)
"Crater Lake and the Two Hunters" emphasizes the lake as a realminhabited by spirits of the dead, dangerous to the living, and safelyaccessible only to powerful shamans. Two hunters, defying this taboo,travel to Crater Lake, and are destroyed (Clark 1953:58-60). "AnotherCrater Lake Legend" has much the same theme. A group of huntersdiscovers the lake. One man is greatly drawn to it, returning again andagain to swim in its waters and to camp on the overlooking cliffs. Inthis way he acquires great spirit power. Ultimately, however, he iskilled by one of the spirit creatures which dwells in the lake (Clark1953:60-61). ... [Read More]

The Crater Lake Lodge at Crater Lake National Park
The National Park Service acquired ownership of Crater Lake Lodge in 1967, but the building continued to deteriorate. Despite being listed on the National Register of Historic Places, the National Park Service felt that it was too expensive to fix and maintain. The agency failed to implement a proposal to demolish the building once it found public opinion to save the lodge too strong. Consequently, the agency approved a plan to save Crater Lake Lodge as part of the comprehensive Rim Village Redevelopment Program in 1988. ... [Read More]