Annie Spring
Annie Spring flows at 77°F within Crater Lake National Park at 5,983 feet elevation, discharging 1.71 cubic feet per second at 37 degrees above ambient temperature under permanent National Park Service protection. Recent USGS measurements documented 2.9°C water temperature, suggesting the spring exhibits significant seasonal variation from the listed 77°F figure.
The spring emerges in the densely forested mountain landscape of Jackson County where the park receives 50.7 inches of annual precipitation including 227.5 inches of snow annually. The surrounding terrain consists of volcanic soils supporting mountain hemlock, lodgepole pine, and Shasta red fir forests characteristic of the high Cascades. Munson Valley Road provides access 615 feet from the spring in the southwest portion of Crater Lake's protected landscape, with Rim Drive and the caldera lake itself lying at higher elevations to the north.
The spring's name honors Anna Spring, though specific biographical details remain unclear in accessible documentation. The feature predates the 1902 establishment of Crater Lake National Park and flows today within permanently protected landscape maintained in natural state by the National Park Service. The spring represents one of numerous thermal and non-thermal water features fed by precipitation and snowmelt percolating through the volcanic edifice.
Access follows National Park Service regulations including entrance fees and seasonal road closures; heavy snow closes park roads from late October through late June most years. The short walk from Munson Valley Road presents no difficulty during open seasons, but elevation and weather demand preparedness for rapid changes. Combine visits with Crater Lake rim attractions and park interpretive programs. Imnaha Guard Station provides overnight accommodations 23.1 kilometers distant for those seeking backcountry stays.
Is Annie Spring worth visiting?
Best for
- Overnight camping trips
Overview Imnaha Guard Station is located in the southwest portion of Oregon's Cascade Range, at an elevation of 3,800 feet. The facility offers a remote setting and most of the amenities needed for a comfortable stay. This cabin does not feature indoor lighting so guests will need to bring lanterns or flashlights. Recreation Hiking and Birdwatching are popular activities among guests visiting this cabin. Bird songs from nuthatches, chickadees, and Steller's jays are common at Imnaha Guard S...