Just Released: Geologic Map of the De Lamar and Swisher Mountain Quadrangles

Just Released: Lamprophyre dikes of northern Idaho and northeastern Washington

Just Released: 2020 Idaho Annual Mining Review

Just Released: Technical Report 20-03, 20-04

Technical Report 20-03 Geologic Map of the Northern Part of the Leadore Quadrangle, Lemhi County, Idaho


Technical Report 20-04 Geologic Map of the Butte City 7.5' Quadrangle, Butte County, Idaho


IGS Annual Report, Fiscal Year 2020

M6.5 earthquake reported northwest of Stanley, 3/31/20

See the IGS Stanley Earthquake webpage for more information. Did you feel it? If so, report it here.

Just released!

Technical Report 20-01 Geologic Map of the Bayhorse Anticline, Custer County, Idaho


Technical Report 20-02 Geologic Map of the Southern Portion of the Clayton Quadrangle, Custer County, Idaho