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Opportunity for public comment on proposal to expand the lahar detection system within Mount Rainier National Park

October 5, 2020

Public input will be accepted from October 5-30, 2020 on a proposal to expand the lahar detection system inside Mount Rainier National Park.  

Geophysicist works at station PR05, part of the Mount Rainier lahar detection network.
USGS-Cascades Volcano Observatory geophysicist Rebecca Kramer works on station PR05, which is part of the Mount Rainier lahar detection network (Mount Rainier is pictured in the distance). The purpose of the site visit was to upgrade the power system and deploy infrasound equipment. 

"The proposed lahar detection system would help us to install a world-class, real-time monitoring network to detect the earliest signs of unrest," said Seth Moran, Scientist-in-Charge at the USGS Cascade Volcano Observatory (USGS-CVO).

The USGS-CVO currently monitors Mount Rainier volcanic activity along with the Pacific Northwest Seismic Network using a network of monitoring stations consisting of 13 seismic and 6 GPS installations located within 12 miles of the summit. The proposal expands the system to improve overall volcano monitoring and lahar detection capacity and provides more rapid notification to the immediate area and surrounding communities in the event of a volcanic event or mudflow.  

Information on the process and how to submit comments is on the NPS Planning, Environment, and Public Comment website, The public comments will assist the National Park Service in identifying concerns, potential alternatives, and suggested mitigations for this proposal. 

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