How did a mountain become a lake? A massive volcanic eruption 7,700 years ago left a deep basin in the place where a mountain peak once stood. Centuries of rain and snow filled the basin, forming a deep blue lake whose waters are of unmatched color and clarity. It's the deepest lake in the United States. Your trip to the rim to view the lake is a climb up the flank of this transformed volcano.

A Long Line of Cascade Range Volcanoes

Mount Mazama is one of a line of volcanoes ranging from northern California into British Columbia. Along this zone, two of the Earth's crustal plates collide. As the denser plate of oceanic crust is forced deep into the Earth's interior beneath the continental plate, it encounters high temperatures and pressures that partially melt solid rock. About 7 million years ago the Cascades began to rise, where the molten rock surfaced as volcanic vents. This process continues. Lassen Peak and Mount St. Helens have erupted within the last century. Future eruptions may destroy the lake and fill the caldera with new rock.

FORMATION

1 GREW For 400,000 years, repeated volcanic eruptions built 12,000-foot Mount Mazama. Thick lava oozed from vents on the mountain. Thinner lava burst to the surface in more spectacular displays of volcanic power. Glaciers formed and receded more than once.

2 BLEW The most violent eruption began 7,700 years ago. A huge column of pumice and ash erupted skyward from a vent northeast of the summit, powered by expanding gas released from rising magma under great pressure in a chamber beneath the mountain.

3 FELL New vents encircling the subsiding peak brought hot flows of pumice, ash, and gas down its flanks. As the magma chamber emptied, the mountain could not support its own weight and collapsed, forming a deep caldera where the snow-capped volcano once stood.

4 FILLED The deep basin filled with centuries of rain and snowfall. No streams run into the lake, so very little sediment clouds its pure waters. Precipitation, balanced with evaporation and seepage, keeps the lake level consistent. Wizard Island erupted after the lake began to fill.

5 FUTURE? It may now be asleep, but Mazama is not an extinct volcano. It may awaken with a new eruptive phase some day as the geologic processes that built the Cascade Range continue. Perhaps the violence of its past will return to once again transform this peaceful landscape.

JUST THE FACTS

How big is Crater Lake?

Did a meteor form the crater?

Why is the lake so blue?

EXPLORATION

Surprising Secrets of the Nation's Deepest Lake

Research on the lake floor in Deep Rover, the submersible, found thick mats of bacteria thriving in the absence of light. Hydrothermal pools, unknown before, indicate the volcanic heat source beneath the lake. Thick bands of moss ring the walls at depths over 400 feet. Much remains to be learned; only two percent of the lake bottom has been explored.

A PRISTINE BENCHMARK FOR CHANGE

(click for larger maps)

Crater Lake's purity makes it an indicator of human-induced change. Studies here show possible impacts of air pollution, climate change, and invasive species.

After his first visit here in 1885 William Gladstone Steel campaigned to protect Crater Lake, which he first heard about as a schoolboy. Steel's work met success with the park's creation in 1902.

The first attempt to determine lake depth, in 1886, was surprisingly accurate. Headed by Clarence Dutton of the U.S. Geological Survey, the Cleetwood Expedition was named for its boat.

A finding of 1,996 feet was taken that used a simple wooden sounding device to lower a section of pipe attached to piano wire. Sonar equipment now records the lake's depth as 1,943 feet.

Park aquatic biologists explored the lake floor in Deep Rover, in the research tradition that the Cleetwood Expedition launched. Moss beds discovered to encircle the lake and Wizard Island may weigh 50 times more than the rest of the lake's living matter.

A Science and Learning Center supports research and education efforts, connecting students, artists, scientists, and the public to share the results of recent investigations. The scientists share their findings and contribute to the education work. An Artists-in-Residence program enables participants to offer the artistic expression of their encounter with Crater Lake.

INSPIRATION

A Place of Power

Local tribes' oral traditions of the cataclysmic eruption closely parallel known geologic details, indicating tribal ancestors witnessed the event. After the eruption, the area became a prominent ritual site to the tribes in this region. The tribes perceive that spirits and particular powers inhabit the volcanic terrain. Private ceremonial activities, including vision quests, take place here today as they have for countless generations.

Archaeologists uncovered 75 sagebrush sandals from a cave near Fort Rock, Oregon, buried beneath a layer of Mount Mazama's ash. This find suggests that ancestral peoples witnessed the great eruption.

Taking in the Beauty of Crater Lake

Rim Village provides information, ranger programs, lodging, and meals from early June through September. A small cafe and gift store is open there year-round. Mazama Village is the summer season center for food, gifts, gasoline, lodging, camping, groceries, and supplies. Park Headquarters offers visitor services like information, first aid, backcountry permits, and map and book sales. Service animals are welcome. See your free Crater Lake Reflections Visitor Guide for details on these services.

Pullouts, viewpoints, and trails along 33-mile Rim Drive offer changing views of the sweeping curve of the caldera wall, massive cliffs overhanging the lake, and the extravagant beauty of the lake itself. Annual snowfall averaging 44 feet closes Rim Drive from mid-October to late June. In summer allow two to three hours to travel around the lake and enjoy its features. Stop at beautiful Vidae Falls along East Rim Drive. View the mysterious island named Phantom Ship. A side trip down Pinnacles Road leads to the wheelchair-accessible Plaikni Falls Trail and the Pinnacles, eerie spires of volcanic ash sculpted by erosion. Other viewpoints offer expansive landscape vistas. Look for Pumice Castle, a narrow tower of reddish rock on the eastern caldera wall. It survives after centuries of erosion. Enjoy a strenuous hike to the lake on the Cleetwood Cove Trail, access point for Crater Lake Boat Tours (advance ticket purchase required). Back at Rim Village, climb the Garfield Peak Trail near historic Crater Lake Lodge.

Safety and Regulations Park roads are often steep and winding. Drive safely, using common sense. Read other safety tips and regulations found in your free visitor guide. Please do not feed or disturb wildlife. For firearms regulations see the park website or ask a ranger. With your help we can preserve this national park unimpaired for future generations to enjoy. In an emergency call 911.

Source: NPS Brochure (2018)

Establishment Crater Lake National Park — May 22, 1902

For More Information Please Visit The OFFICIAL NPS WEBSITE

The contents of brochures, site bulletins and trading cards (denoted with a colored caption) can be viewed by clicking on the cover. Most modern-day brochures, however, are cover only (denoted by a white caption) due to photograph copyrights. These items are historical in scope and are intended for educational purposes only; they are not meant as an aid for travel planning. The dates under each brochure do not reflect the complete range of years that a particular brochure was issued.

1912		1913		1914
1916		1916 (HTML)		1917 (HTML)
cover only 1919		1920 (HTML)		cover only 1921
1922		1923		1924
cover only 1925		1926		1927
1928		1929		1930
1931		1932		1933
1934		1935		1936
1937		1938		1939
1939		1940 (HTML)		1941
1942 (HTML)		1948	cover only 1949	1950
1951		1952		cover only 1953
1954		1955		1957
1958		cover only 1959	1960	cover only 1962	1963
cover only 1964	1965	cover only 1965	1965 2nd ed.	1966	cover only 1969
1970	cover only 1972	1973	1974	1976	1978
1979	1981
1982-1984		cover only 1988		cover only 1990-1995
cover only 1996-1997		cover only 1998-2000		cover only 2001
cover only 2002-2007		cover only 2008-2011		cover only 2011-2022
United States Railroad Administration National Park Booklet 1919		Motorists Guide 1933		A Centennial Celebration 2002	cover only Date Unknown
Backcountry Use 1993		Summer Backcountry Use Date Unknown		Date Unknown
Day Hikes Date Unknown		Fish/Fishing Regulations Date Unknown		History Date Unknown
Lake Research Date Unknown		Pacific Crest Trail Date Unknown		Snowmobile Use Date Unknown
Stock Use 1993		Summer, 1996 1996		Weather Date Unknown
Winter Backcountry Use Date Unknown		Winter Use Date Unknown		Accessible Facilities and Trails in Crater Lake National Park February 2016
Bicycling July 2012		Checklist of Birds December 2001		Climate Change at Crater Lake 2013
The Crater Lake Lodge August 2001		Fishing February 2010		Geology December 2001
History September 2001		Introduction to Crater Lake July 2002		Checklist of Mammals December 2001
Lodging & Camping (Summer) October 2017		Lodging & Camping (Summer) October 2017		The National Park System September 2001
Reptiles and Amphibians December 2001		Cross-Country Ski and Snowshoe Rentals October 2017		Trees September 2001
The World's Deepest Lakes 2017		Centennial Celebration Weekend, August 22-26, 2002 2002		cover only 1991
Backcountry Use Date Unknown	Boat Trips Date Unknown	Fishing Date Unknown	Ski Service 1983	South Rim Village Date Unknown	cover only Garfield Peak Trail 2004
Date Unknown	Date Unknown	Crater Lake Lodge Rates 1984	Crater Lake Lodge Date Unknown	Crater Lake Lodge Date Unknown	Crater Lake Lodge Date Unknown
cover only A Trail Guide to Annie Creek Date Unknown		cover only A Trail Guide to Castle Crest Date Unknown		cover only A Trail Guide to Godfrey Glen Date Unknown
Grayback Ridge Motor Nature Trail 1976		Rhapsody in Blue: Historic Rim Drive 2004		Walking Tour of Rim Village 2016
Lady of the Woods Loop Trail Guide 1999		Lady of the Woods Loop Trail Guide 2007		La Señora del Bosque Guía del Sendero Circular 2007
cover only Trail Guide to the Castle Crest Wildflower Trail Date Unknown	A Tapestry of Inspiration 2002	Southern Pacific Lines 1930
Trading Cards
(©Jefferson National Parks Association)

A Chronology of Planning, Development, and Controversy in the Upper Rogue River Basin (undated)

A Comparison of Cinder Cones in the Crater Lake National Park Area With Those in the Lassen National Park Area (K.R. Cranson, June 7, 1967)

A National Park for Oregon: Crater Lake Reservation, 1886-1902 (Stephen R. Mark, undated)

A Study of the Chemical and Physical Characteristics of Pumice from Glacier Peak, Washington and Mt. Mazama (Crater Lake), Oregon: Report of Progress, June 16-September 7, 1963 WSU Department of Anthropology Reports of Investigations 24 (Virginia C. Steen, 1963)

Accessibility and Self-Evaluation and Transition Plan, Crater Lake National Park, Oregon (April 2024)

Administrative History: Volume I of II, Crater Lake National Park (Harlan D. Unrau, March 1988)

Administrative History: Volume II of II, Crater Lake National Park (Harlan D. Unrau, 1988)

Administrative History — Chapter 17: Planning and Development at Rim Village, Crater Lake National Park (Stephen R. Mark, 1991)

Administrative History — Chapter 18: Research, Crater Lake National Park (Stephen R. Mark, 2003)

Administrative History — Chapter 19: Trails at Crater Lake National Park (Stephen R. Mark, 2013)

Administrative History, Crater Lake National Park (HTML edition) (Harlan D. Unrau and Stephen R. Mark, 1988, 1991, 2003, 2013)

Annie Creek Vegetation Action Plan (undated)

Apparent Predation by Gray Jays, Perisoreus canadensis, on Long-toed Salamanders, Ambystoma macrodactylum, in the Oregon Cascade Range (Michael P. Murray, Christopher A. Pearl and R. Bruce Bury, extract from The Canadian Field-Naturalist, Vol. 119 No. 2, 2005, ©The Ottawa Field-Naturalists' Club)

Archaeological and Ethnological Studies of Southwest Oregon and Crater Lake National Park: An Overview and Assessment (John Mairs, Kathryn R. Winthrop and Robert H. Winthrop, May 1, 1994)

Backcountry Permit System (undated)

Backcountry Water (undated)

Bathymetry of Crater Lake, Oregon (John V. Byrne, extract from The Ore Bin, Vol. 24 No. 10, October 1962)d

Boy Scouts at Crater Lake (Walter Prichard Eaton, 1922)

Cattle Trespass (undated)

Checking Crater Lake's Vital Signs Information Brief (May 19, 2021)

Chemical analyses of rocks and glass separates from Crater Lake National Park and vicinity, Oregon USGS Open-File Report 87-57 (P.E. Bruggman, C.R. Bacon, P. J. Aruscavage, R.W. Lerner, L.J. Schwarz and K.C. Stewart, 1987)

Code-A-Site (1977)

Crater Lake (Howel Williams, undated)

Crater Lake: An Ecosystem Study (Ellen T. Drake, Gary L. Larson, Jack Dymon and Robert Collier, eds., 1990, ©Pacific Division of the American Association for the Advancement of Science)

Crater Lake Digital Research Collection (Oregon Tech Libraries)

Crater Lake Institute

Crater Lake Legends (William Gladstone Steel, Steel Points Junior, Vol. 1 No. 3, May 1927)

Crater Lake Limnological Studies

Crater Lake Limnological Studies 1982 (Douglas W. Larson, February 1983)

Crater Lake Limnological Studies: 1984 Annual Report (Gary L. Larson, July 1985)

Crater Lake Limnological Studies: 1986 Annual Report (Gary L. Larson, August 1987)

Crater Lake Long-Term Limnological Monitoring Program: State of the Lake Report 2014 (Scott Girdner, Mark Buktenica, Jeff Runde and Gary Larson, 2014)

Crater Lake Long-term Limnological Monitoring Program: State of the Lake Report 2018 (Scott Girdner, Mark Buktenica and Jeremy Mack, March 2019)

Crater Lake Long-term Limnological Monitoring Program: State of the Lake Report 2020 (Scott Girdner, March 2021)

Crater Lake Limnological Studies Final Report Technical Report NPS/PNROSU/NRTR-93/03 (G.L. Larson, C.D. McIntire and R.W. Jacobs, eds., 1993)

Crater Lake Lodge Historic Structure Report, Crater Lake National Park, Oregon (David Arbogast, Linda W. Greene, Catherine H. Blee and James M. Ellis, April 1984)

Crater Lake National Park (United States Railroad Administration, 1919)

Crater Lake National Park Historic Headquarters Landscape Restoration & Management (Iain Robertson, March 2010)

Crater Lake National Park, Oregon (Swem's Studio, Date Unknown)

Crater Lake National Park, Oregon (Crater Lake National Park Company, Date Unknown)

Crater Lake National Park: Scenic Values Study (Rebecca L. Johnson, David B. Rolloff and Yeon Su Kim, April 1999)

Crater Lake Research Library (Crater Lake Institute)

Crater Lake: Seventeen Years to Success Stephen R. Mark, undated)

Crater Lake: The Campaign to Establish a National Park in Oregon Steve Mark, undated)

Crater Lake, Yesterday, Today and Tomorrow (William Gladstone Steel, Steel Points Junior, Vol. 1 No. 2, August 1925)

Cultural Landscapes Inventory: Castle Crest Wildflower Trail (2001)

Cultural Landscapes Inventory: Rim Drive Historic District (2011)

Cultural Landscapes Inventory: Rim Village (2004)

Cultural Landscapes Inventory: Superintendent's Residence, Crater Lake National Park (2000)

Cultural Landscapes Inventory: The Watchman (2001)

Cultural Landscape Recommendations: Park Headquarters at Munson Valley Crater Lake National Park (Summer 1991)

Decisions of the United States Geographic Board: Crater Lake National Park, Oregon No. 32 — January 4, 1933 (1934)

Deterioration of the Littoral-Benthic Ecosystem Following Recent Expansion of Signal Crayfish (Pacifastacus leniusculus) in the World’s Clearest Large Lake (Facundo Scordo, Scott F. Girdner, Aldo San Pedro, Carina Seitz and Sudeep Chandra, extract from Ecosystems, Vol. 26, 2023)

Development Concept Plan Environmental Assessment, Amendment to the General Management Plan, Crater Lake National Park (1984)

Did Crater Lake, Oregon, Originate by a Volcanic Subsidence or an Explosive Eruption? (J.S. Diller, extract from The Journal of Geology, Vol. 31 No. 3, April-May 1923)

Documentation related to planning and compliance for actions taken to rehabilitate the Cafeteria (building #570) in Rim Village, Crater Lake National Park (Stephen R. Mark, February 2014)

Draft General Management Plan / Environmental Impact Statement, Crater Lake National Park (May 2004)

Ecology Of Elk Inhabiting Crater Lake National Park And Vicinity (HTML edition) CPSU/OSU 88-2 (Kurt Jenkins, Kevin Cooper and Edward Starkey, 1988)

Ecology of the Pumice Desert, Crater Lake National Park (Elizabeth Mueller Horn, extract from Northwest Science, Vol. 42 No. 4, November 1968)

Effects of Prescribed Fire in Mixed Conifer Forest, Crater Lake National Park, Oregon (R.J. and J.D. Mastrogiuseppe, 1999)

Enabling Legislation: H.R. 4393 (April 29, 1902)

Feeding of Golden-Mantled Ground Squirrels By Park Visitors at Crater Lake National Park NPS Cooperative Park Studies Unit CPSU/OSU 84-9 (S. Kent Schwarzkopf, May 1984)

Final Development Concept Plan/ Amendment to the General Management Plan, Environmental Impact Statement - Crater Lake National Park (June 1995)

Final General Management Plan / Environmental Impact Statement, Crater Lake National Park (May 2005)

Fire History of the Northeastern Portion of Crater Lake National Park, Oregon (R.J. and J.D. Mastrogiuseppe, undated)

Fire Ring Eradication (Evangelina Rubalcava, 1979)

Fish Liberations in Crater Lake (undated)

Forest Structure Patterns across Crater Lake National Park from LiDAR Data (Van R. Kane, Calvin Farris, Jonathan T. Kane, Miles LeFevre, Sean Jeronimo, James. A. Lutz and Derek J. Churchill, February 29, 2016)

Forests of Crater Lake National Park (J.F. Pernot, 1916)

Foundation Document, Crater Lake National Park, Oregon (August 2015)

Foundation Document Overview, Crater Lake National Park, Oregon (January 2015)

General Management Plan, Crater Lake National Park (December 1977)

General Volcanology (Paul W. Rose, undated)

Geologic History of Crater Lake (HTML edition) (J.S. Diller, 1912)

Geologic Resources Inventory Report, Crater Lake National Park NPS Natural Resource Report NPS/NRPC/GRD/NRR-2013/719 (K. KellerLynn, November 2013)

Geology Synopsis (undated)

Geology Training Manual, Crater Lake National Park (Bob Lillie, June 9, 1995)

Historic American Engineering Record

Crater Lake National Park Roads HAER No. OR-107

Crater Lake National Park Roads, Goodbye Creek Bridge HAER No. OR-107-A

Historic Resource Study, Crater Lake National Park (Linda Greene, June 1984)

Historic Structure Report & Rehabilitation Guide: Employee Stone Houses #24, 25, 28, 30, 31, 32, Crater Lake National Park (Patience Churchward, September 4, 2009)

Historical Background and Fact Sheet of the Watchman (L. Smith, undated)

History of Rim Drive (undated)

Horse Regulations, Crater Lake National Park (July 13, 1981)

Impacted Site Reclamation (1977)

Impacts of Visitor Spending on the Local Economy: Crater Lake National Park, 2001 (Daniel J. Stynes and Ya-Yen Sun, November 2002)

In the Footprints of Gmukamps: A Traditional Use Study of Crater Lake National Park and Lava Beds National Monument (Douglas Deur, 2008)

Information Sheets

Backcountry Hiking and Camping (undated)

Camping Outside Park (undated)

Crater Lake Ski Routes (December 1983)

Entrance Fees and General Information (November 1978)

Entrance Fees and General Information (March 1983)

Fish of Crater Lake National Park (undated)

Fishing (undated)

General Information (German) (undated)

Headquarters Map (undated)

Snow Depth (undated)

The Origin of Crater Lake (undated)

The World's Deepest Lakes (undated)

Weather Summary (1930-1976) (c1977)

Integrated Aquatic Community and Water Quality Monitoring of Mountain Ponds and Lakes in the Klamath Network — Annual Data Report: 2013 results from Lassen Volcanic National Park, Crater Lake National Park, and Redwood National Park NPS Natural Resource Data Series NPS/KLMN/NRDS—2016/1055 (Eric C. Dinger, September 2016)

Interim Development Concept Plan / Amendment to the General Management Plan, Crater Lake National Park (April 1985)

Invasive Vegetation Management: 2019 Annual Report, Crater Lake National Park (Delacey R.A. Randall, Elena L. Olsen, Jennifer S. Hooke, Hamilton L. Hasty, Sarah E. Hogan, Vance J. McNees and Matthew W. Jelinske, April 2020)

Invasive Vegetation Management: 2020 Annual Report, Crater Lake National Park (Hamilton L. Hasty, Jennifer S. Hooke and Scott E. Heisler, April 2021)

Junior Ranger Activity Book (Ages 6-12), Crater Lake National Park (2017)

Klamath Network Landbird Monitoring Annual Report: 2010 Results from Crater Lake National Park, Lassen Volcanic National Park, and Oregon Caves National Monument NPS Natural Resource Data Series NPS/KLMN/NRDS—2011//175 (Jaime L. Stephens, John D. Alexander and Sean R. Mohren, June 2011)

Klamath Network Landbird Monitoring Annual Report: 2013 results from Crater Lake National Park and Oregon Caves National Monument NPS Natural Resource Data Series NPS/KLMN/NRDS—2014/689 (Jaime L. Stephens, August 2014)

La Señora del Bosque Guía del Sendero Circular (Stephen R. Mark, 2007)

Lady of the Woods (William Gladstone Steel, Steel Points Junior, Vol. 1 No. 1, July 1925)

Lady of the Woods Loop Trail Guide (Steve Mark, 2007)

Legislation: Southern Extension (Panhandle) (M1y 14, 1932)

Lepidoptera of Crater Lake National Park: Results from the 2015 Surveys (Dana N.R. Ross, May 2015)

Limnology Synopsis (1974)

Limnology Synopsis (1974)

Lodgepole Pine at Crater Lake: History and Management of the Forest Structure (HTML edition) (Donald B. Zobel and Robert S. Zeigler, undated)

Long-Range Aquatic Resources Management Plan, Crater Lake National Park: 1969-1978 (Larry L. Hakel and Glen Kaye, 1969)

Mabel Hedgpeth Crater Lake National Park Oral History Program Monograph No. 1 (Royal G. Jackson, CPSU/OSU 87-4, Fall 1987)

Mixed Severity Fire Regimes & Forest Structure at Crater Lake National Park (Alison Forrestel and Scott Stephens, February 2012)

Mount Mazama and Crater Lake: Growth and Destruction of a Cascade Volcano USGS Fact Sheet 092-02 (Ed Klimasauskas, Charles Bacon and Jim Alexander, August 2002)

Mount Mazama: Explosion versus Collapse (Warren D. Smith and Carl R. Swartzlow, December 1936)

Munson Valley's Designed Landscape Historic American Buildings Survey No. OR-144 (Stephen R. Mark, January 24, 1990)

Museum Management Plan (Mary Benterou, Kent Bush, Kelly Cahill, Rock Cronenberger and Scott E. Foss, 2007)

National Park in the State of Oregon (HTML edition) House of Representatives Report No. 613, 55th Congress, 2d session. (March 3, 1898)

National Register of Historic Places Nomination Forms

Crater Lake Lodge (Henry G. Law, November 12, 1980)

Historic Resources of Crater Lake National Park (Patricia Erigero and Stephanie Toothman, 1984/1988)

Munson Valley Historic District (Boundary Decrease) (Stephen R. Mark, May 12, 1997)

Rim Drive Historic District (Stephen R. Mark, July 31, 2007)

Rim Village Historic District (Stephen R. Mark, May 12, 1997)

Superintendent's Residence (Laura Soulliere Harrison, 1985)

Natural and Cultural Resources Management Plan and Environmental Assessment - Crater Lake National Park (1986)

Natural Resource Condition Assessment, Crater Lake National Park NPS Natural Resource Report NPS/NRSS/WRS/NRR-2013/724 (Paul R. Adamus, Dennis C. Odion, Gregory V. Jones, Lorin Groshong and Ryan Reid, November 2013)

Nature Notes: Crater Lake National Park (1928-2002)

North Junction Overlook Revegetation Project: 2019 Annual Report, Crater Lake National Park (Carolyn S. Wyler, Scott E. Heisler and Jennifer S. Hooke, April 2020)

Notes on Revegetation (Phil Barnes, 1978)

Observation on Black Bears at the Munson Dump, Crater Lake National Park (Stephen Herrero, 1969)

Pacific Crest Well Pipeline Revegetation Project: 2019 Annual Report, Crater Lake National Park (Scott E. Heisler, Carolyn S. Wyler and Jennifer S. Hooke, April 2020)

Park Headquarters Historic Walking Tour (Steve Mark, 1999)

Park Newspaper (Reflections) (1986-2019)

Peregrine Falcons Soar Crater Lake Cliffs (Scott Stonum, undated)

Pika Monitoring at Crater Lake National Park, Craters of the Moon National Monument and Preserve, Lassen Volcanic National Park, and Lava Beds National Monument: 2010 Annual Monitoring Report (Mackenzie R. Jeffress, Lisa K. Garrett and Thomas J. Rodhouse, December 2010)

Pika Monitoring at Crater Lake National Park, Craters of the Moon National Monument and Preserve, Lassen Volcanic National Park, and Lava Beds National Monument: 2010-2014 Status Report NPS Natural Resource Data Series NPS/UCBN/NRDS-2015/782 (Thomas J. Rodhouse and Matthew Hovland, April 2015)

PNRO Inventory

Administration Building #1 (James A. Miller and A.P. DiBenedetto, August 24, 1984)

Comfort Station #68 (Patricia C. Erigero, July 27, 1984)

Comfort Station #72 (Patricia C. Erigero, July 27, 1984)

Sinnott Memorial Building #67 (Patricia C. Erigero, July 27, 1984)

The Watchman Lookout Station #168 (Patricia C. Erigero, July 27, 1984)

Policy Statement for Use of Horses (July 30, 1980)

Preservation Guide for Stone Masonry and Dry-Laid Resources (Abby Glanville, Summer 2008)

Proposal for Food Habits Study for Sierra Nevada Red Fox (Vulpes vulpes necator), and Pacific Fisher (Martes pennanti) at Crater Lake National Park, Oregon: 2018 Report (Daniel Gumtow-Farrior and Catherine Gumtow-Farrior, 2018)

Pumice Desert Revegetation Project: 2019 Annual Report, Crater Lake National Park (Scott E. Heisler, Carolyn S. Wyler and Jennifer S. Hooke, April 2020)

Rehabilitation of Historic Crater Lake Lodge: Comprehensive Design Program, Historic Character/Documentation (extract) (NPS, Fletcher Farr Ayotte, Architects and CH2MHill, Consulting Engineers, March 30, 1990)

Rehabilitate Superintendent's Residence Project Environmental Assessment (engineering-environmental Mangement, Inc., November 2003)

Replace Rim Village Barriers Revegetation Project: 2019 Annual Report, Crater Lake National Park (Scott E. Heisler, Jennifer S. Hooke and Carolyn S. Wyler, April 2020)

Report of Capt. C. E. Dutton (C.E. Dutton, extract from 8th Annual Report 1886-7, Part1 July 1, 1887)

Report of the Superintendent of Crater Lake National Park to the Secretary of the Interior: 1910 (HTML edition) (A.F. Arant, 1911)

Report of the Superintendent of Crater Lake National Park to the Secretary of the Interior: 1913 (HTML edition) (Will G. Steel, 1914)

Report of the Superintendent of Crater Lake National Park to the Secretary of the Interior: 1914 (HTML edition) (Will G. Steel, 1915)

Report of the Superintendent of Crater Lake National Park to the Secretary of the Interior: 1915 (HTML edition) (Will G. Steel, 1916)

Report on the Bear Problem at Crater Lake National Park (Joseph Dixon, December 14, 1944)

Research and Management of Black Bears in Crater Lake National Park, Oregon RSP CRLA-N-2A (Michael T. McCollum, January 20, 1974)

Research Opportunities, Crater Lake National Park (1999)

Revegetation at Crater Lake National Park: A Progress Report for 1979 (Martin Goebel)

Rhapsody in Blue: Historic Rim Drive (Stephen R. Mark, 2004, ©Crater Lake Natural History Association)

Rim Drive Cultural Landscape Report, Crater Lake National Park, Oregon Pacific West Region: Social Science Series Publication No. 2009-01 (Stephen R. Mark and Jerry Watson, 2009

Rim Drive Rehabilitation Revegetation Project: 2014 Annual Report, Crater Lake National Park (Jennifer S. Beck, Elena K. Thomas, Kathryn M. Willams and Melody C. Frederic, April 2015)

Rim Drive Rehabilitation Revegetation Project: 2016 Annual Report, Crater Lake National Park (Jennifer S. Beck, Andrew H. Fraser, Carolyn S. Wyler, Melody C. Frederic and Kathryn M. Willams, May 2017)

Rim Drive Rehabilitation Revegetation Project: 2017 Annual Report, Crater Lake National Park (Carolyn S. Wyler, Tara L. Chizinski, Scott E. Heisler, Melody C. Frederic and Jennifer S. Hooke, April 2018)

Rim Drive Rehabilitation Revegetation Project: 2018 Annual Report, Crater Lake National Park (Carolyn S. Wyler, Tara L. Chizinski, Scott E. Heisler, Melody C. Frederic and Kaylin M. Scott, February 2019)

Rim Drive Rehabilitation Revegetation Project: 2019 Annual Report, Crater Lake National Park (Carolyn S. Wyler, Scott E. Heisler, Jennifer S. Hooke, Melody C. Frederic, Carson R.T. Ralls and Benjamin D. Wright, April 2020)

Rim Drive Rehabilitation Revegetation Project: 2020 Annual Report, Crater Lake National Park (Carolyn S. Wyler, Scott E. Heisler and Jennifer S. Hooke, April 2021)

Rim Drive Rehabilitation Revegetation Project: 2021 Annual Report, Crater Lake National Park (Carolyn S. Wyler, Scott E. Heisler and Jennifer S. Hooke, April 2022)

Rim Drive Rehabilitation Revegetation Project: 2022 Annual Report, Crater Lake National Park (Carolyn S. Wyler, Scott E. Heisler and Jennifer S. Hooke, April 2023)

Rim Trail Revegetation Project: 2019 Annual Report, Crater Lake National Park (Scott E. Heisler, Carolyn S. Wyler and Jennifer S. Hooke, April 2020)

Rock Dates at Crater Lake Geologist Note #7 (KRC, July 24, 1982)

Saving Bull Trout in Sun Creek (Mark Buktenica, undated)

Shaded Relief Map: Crater Lake National Park & Vicinity, OR, Side Two, Crater Lake National Park Scale: 1:62,500 (USGS, 1984)

Simulation of deep ventilation in Crater Lake, Oregon, 1951-2099 USGS Scientific Investigations Report 2016-5046 (Tamara M. Wood, Susan A. Wherry, Sebastiano Piccolroaz and Scott F Girdner, 2016)

Social Impacts of Design Alternatives — Crater Lake National Park CPSU Report 81-2 (Bo Shelby and Donald W. Wolf, 1981)

Soil Survey of Crater Lake National Park, Oregon (October 2002)

Some Ghosts at Crater Lake (Stephen R. Mark, extract from Journal of the Shaw Historical Library, Vol. 31, 2020)

Status of White Pines Across Five Western National Park Units: Initial Assessment of Stand Structure and Condition NPS Natural Resource Report NPS/KLMN/NRR—2021/2232 (Matthew J. Reilly, Jonathan C. B. Nesmith, Sean B. Smith, Devin S. Stucki and Erik S. Jules, February 2021)

Steel Points: Crater Lake (William Gladstone Steel, Vol. 1 No. 2, January 1907)

Steel Visitor Center Rehabilitation Revegetation Project: 2020 Annual Report, Crater Lake National Park (Scott E. Heisler, Carolyn S. Wyler and Jennifer S. Hooke, April 2021)

Steel Visitor Center Rehabilitation Revegetation Project: 2021 Annual Report, Crater Lake National Park (Scott E. Heisler, Carolyn S. Wyler and Jennifer S. Hooke, April 2022)

Steel Visitor Center Rehabilitation Revegetation Project: 2022 Annual Report, Crater Lake National Park (Carolyn S. Wyler, Scott E. Heisler and Jennifer S. Hooke, April 2023)

Sun Creek Bull Trout Restoration Environmental Assessment, Crater Lake National Park (April 17, 1992)

Supplement to the 1984 Environmental Assessment, Development Concept Plan, Amendment to the General Management Plan: Mazama Campground/Rim Village Corridor, Crater Lake National Park, Oregon (October 1987)

The Battle Against Bark Beetles in Crater Lake National Park: 1925-34 Forest Service General Technical Report PNW-GTR-259 (Boyd E. Wickman, June 1990)

The caves of Crater Lake National Park (John Eliot Allen, extract from Oregon Geology, Vol. 46 No. 1, January 1984)

The Geologic History of the Diamond Lake Area (William B. Purdom, undated)

The Geology and Petrography of Crater Lake National Park USGS Professional Paper 3 (Joseph Silas Diller and Horace Bushnell Patton, 1902)

The History of Crater Lake National Park (undated)

The impact of introduced crayfish on a unique population of salamander in Crater Lake, Oregon (M.W. Buktenica, S.F. Girdner, A.M. Ray, D.K. Hering and J. Umek, extract from Park Science, Vol. 32 No. 1, Summer 2015)

The Lady of the Woods, Crater Lake, Oregon (undated)

The Legends of Crater Lake (W. Craig Thomas, undated)

The Making and Use of Sugar Pine Shakes (Mary Lou Neville King, September 2003)

The Mountains of Oregon (©W.G. Steel, 1890)

The Pumice Desert: Nature with a Human Face (Stephen R. Mark, extract from Journal of the Shaw Historical Library, Vol. 32, 2021)

The Rim Road: A Wonder Drive (C.G. Thomson and Fred H. Kiser, c1920)

The Rustic Landscape of Rim Village, 1927-1941 (Cathy A. Gilbert and Gretchen A. Luxenberg, 1990)

The Smith Brothers' Chronological History: Crater Lake National Park 1832 to 1982, with 1984 Addendum (Larry B. Smith and Lloyd C. Smith, 1968-1984)

The Smith Brothers' Chronological History: Crater Lake National Park 1832-2020 (Larry B. Smith and Lloyd C. Smith, 2020)

Topographic Map: Crater Lake National Park & Vicinity, OR, Side Two, Crater Lake National Park Scale: 1:62,500 (USGS, 1988)

Trail Management Plan/Environmental Assessment, Crater Lake National Park (Appendixes) (September 2021)

Volcano and Earthquake Hazards in the Crater Lake Region, Oregon USGS Open-File Report 97-487 (Charles R. Bacon, Larry G. Mastin, Kevin M. Scott and Manuel Nathenson, 1997)

Walking Tour of Rim Village: Historic District at Crater Lake National Park (Rawson Baylor Pino, 2016)

Water-resources appraisal of Crater Lake National Park, Oregon USGS Open-File Report 69-95 (F.J. Frank and A.B. Harris, 1969)

Weather System (1977)

Wetlands of Crater Lake National Park: An Assessment of Their Ecological Condition NPS Natural Resource Technical Report NPS/KLMN/NRTR-2008/115 (Paul R. Adamus and Cheryl L. Bartlett, April 2008)

Whitebark Pine Community Mapping at Crater Lake National Park (Matt Noone, Date Unknown)

Whitebark Pine in Crater Lake and Lassen Volcanic National Parks: Initial Assessment of Stand Structure and Condition NPS Natural Resource Report NPS/KLMN/NRR—2017/1459 (Erik S. Jules, Jenell I. Jackson, Sean B. Smith, Jonathan C. B. Nesmith, Leigh Ann Starcevich and Daniel A. Sarr, June 2017)

Whitebark Pine Monitoring: 2015 results from Crater Lake National Park and Lassen Volcanic National Park NPS Natural Resource Report NPS/KLMN/NRR—2016/1319 (Sean B. Smith and Alice Chung-MacCoubrey, October 2016)

Whitebark Pine Monitoring: 2016 results from Crater Lake National Park and Lassen Volcanic National Park NPS Natural Resource Report NPS/KLMN/NRR—2017/1484 (Sean B. Smith, July 2017)

Whitebark Pine Monitoring at Crater Lake and Lassen Volcanic National Parks: Fiscal Years 2012–2014 Project Report NPS Natural Resource Report NPS/KLMN/NRR—2015/1052 (Jenell Jackson, Erik S. Jules, Sean B. Smith, E. April Sahara and Daniel A. Sarr, October 2015)

Wilderness Recommendations, Crater Lake National Park (September 1972)

Wildland Fire Resource Advisor Guide, Crater Lake National Park (July 2003)

Wildland Fire Resource Advisor Guide, Crater Lake National Park (2007)

For an extensive collection of materials pertaining to Crater Lake National Park, please consult the excellent Crater Lake Institute Website.

Crater Lake National Park Ranger Talk

The following visual bibliography is just a sampling of the handbooks and books which have been published for this park. NPSHistory.com does not endorse these, but are merely presenting them for informational purposes only. As most are copyrighted, we are only able to provide the covers, and not contents, of these publications.

Geological History of Crater Lake 1912	Forests of Crater Lake National Park 1916	Boy Scouts at Crater Lake Walter Prichard Eaton 1922	Lady of the Woods William Gladstone Steel July 1925
Crater Lake Yesterday, Today and Tomorrow William Gladstone Steel August 1925	Crater Lake Legends William Gladstone Steel May 1927	cover only The Enchanted Lake Stanton C. Lapham 1931	cover only Blue Interval: Poems of Crater Lake Ernest G. Moll 1935
cover only Blue Enchantment: The Story of Crater Lake Wayland A. Dunham 1942	cover only The Birds of Crater Lake National Park Donald S. Farner 1952	cover only Along Crater Lake Highways George C. Ruhle 1953	cover only Crater Lake: The Story of its Origin Howell Williams 1957
cover only 101 Wildflowers of Crater Lake National Park Grant and Wendonah Sharpe 1959	cover only Along Crater Lake Roads George R. Ruhle 1964	cover only Shrubs of Crater Lake National Park Charles F. Yocom 1964	cover only Crater Lake: The Story of its Origin Howell Williams 1970
cover only Ancient Tribes of the Klamath Country Carrol B. Howe 1968	cover only The Story of Crater Lake National Park Howard and Marian Place 1974	cover only Exploring Crater Lake Country Ruth Kirk 1975	cover only Crater Lake National Park Bob and Ira Spring and Harvey Manning 1975
cover only Crater Lake: A Photographic Journal Terry Van Marshall 1979	cover only Birds of Crater Lake National Park Dick Follett 1979	cover only Crater Lake: Gem of the Cascades K.R. Cranson 1980	cover only Crater Lake National Park and Vicinity Jeffrey P. Schaffer 1983
cover only Crater Lake National Park Trails Connie Toops 1983	cover only A Guide to Crater Lake: The Mountain That Used To Be Ronald G. Warfield 1985	Crater Lake: An Ecosystem Study Ellen T. Drake, Gary L. Larson, Jack Dymond, Robert Colier, eds. 1990	cover only Crater Lake National Park Trails Connie Toops 1990
cover only Lodge of the Imagination: The Crater Lake Lodge Story Lee Juillerat 1995	cover only Crater Lake: The Story Behind the Scenery Ronald G. Warfield, Lee Juillerat and Larry Smith 1996	cover only Crater Lake in Pictures: The Continuing Story Stephen R. Mark 1996	cover only Crater Lake National Park: Wild and Beautiful Charles A. Blakeslee 2001
cover only Crater Lake National Park: A History Rick Harmon 2002	cover only Crater Lake National Park: A Global Treasure Ann and Myron Sutton 2002	cover only Calendar 2003	cover only Rhapsody in Blue: Historic Rim Drive Stephen R. Mark 2004
cover only Crater Lake: Gem of the Cascades K.R. Cranson 2005	cover only Why is Crater Lake So Blue? A Novel Michael LaLumiere 2007	cover only Trails of Crater Lake National Park & Oregon Caves National Monument William L. Sullivan 2014