Vehicle-Free Days on East Rim Drive
The park will host two vehicle-free days on East Rim Drive, September 20 and 27, 2014. Although East Rim Drive will be closed for these events, all other roads through the park will remain open to vehicular traffic. More »
Lost Creek Campground CLOSED Nights of 9/19 and 9/26
Lost Creek Campground will be CLOSED from 3:00 PM Friday, 9/19 until 5:00 PM Saturday, 9/20 because of the temporary road closure to vehicles on East Rim Drive. It will also be CLOSED from 3:00 PM Friday, 9/26 until 5:00 PM Saturday, 9/27.
Stage 1 Fire Restrictions in Effect
To ensure public safety and to provide the highest degree of protection to park resources, restrictions on campfires, smoking, and fireworks are in effect. More »
The CTD water monitoring sensor packages
A CTD is an instrument used in oceanography that contains multiple sensors attached to a single unit. The CTD is attached to a cable that is raised and lowered in the water column. Visit this site for additional information on CTD's.
Crater Lake owns two CTD units, one unit is deployed from the research boat Neuston and the other unit is permanently moored in the lake and takes a top to bottom measurement once per day.
Crater Lake biologists prepare the CTD for deployment by turning the power on and cleaning the sensor heads.
Getting the CTD ready for deployment.
The CTD sensor package is visible about 15 feet below the boat.
The unit is approximately 5 meters (15 feet) under the boat in the picture.
Did You Know?
Seven different trees live on Phantom Ship, an island in Crater Lake. There are also colonies of violet green swallows, and several varieties of wildflowers and lichens living there.