The Crater Lake National Park Maps consist of topographic, shaded relief, and bathymetric maps of Crater Lake, Oregon, and vicinity; most of the maps were prepared and published by the U.S. Geological Survey. The bulk of the maps are topographic maps at 1:62,500 scale. These include an early series of maps issued in 1903, 1911, 1925, and 1931 as well as a later series issued in 1946 and 1956. Multiple copies of some editions are available. In addition to topographic contours, the maps depict streams, roads, trails, boat landings, Ranger stations, and campgrounds in the vicinity. The earliest topographic maps reference the 1886 survey and depth soundings conducted by Mark B. Kerr for the U.S. Geological Survey. The topographic maps have text and photographs of Crater Lake on the verso.
The collection also includes a color shaded relief map, Panoramic View of the Crater Lake National Park. The map is undated, but was produced during the time that Franklin K. Lane was Secretary of the Department of Interior (1913-1920).
A bathymetric map of Crater Lake prepared in the early 1960s by John V. Byrne is also part of the collection. This large scale map (3 in = 0.5 mile) depicts the lake depths with contour intervals of 10 fathoms. This map may have been prepared for the Lunar Geological Field Conference in Bend, Oregon in 1965 and published with the conference guidebook.
- Series 1: Crater Lake National Park, 1903-1962 Add to Shelf
- Folder-Item 1.1: Crater Lake National Park, Oregon, 1903-1931 Add to Shelf
- Extent: 10 sheets
- Folder-Item 1.2: Panoramic View of the Crater Lake National Park, Oregon, circa 1915 Add to Shelf
- Extent: 3 sheets
- Folder-Item 1.3: Crater Lake National Park and Vicinity, Oregon, 1946-1956 Add to Shelf
- Extent: 3 sheets
- Folder-Item 1.4: Crater Lake, Oregon Bathymetric Map, 1962 Add to Shelf
- Prepared by John Byrne.