Landslides

Idaho Geologic Survey is the primary agency for investigating landslide activity in Idaho.

February 20, 2004
Timber Point Slide - Banks-Lowman Road (Boise County): Acting Governor Jim Risch today (2/23/04) declared a section of the Banks to Lowman Road in Boise County a state disaster area allowing state emergency funds and resources to be used for removing a major rockslide from the road. (full Press Release)

KTVB: GARDEN VALLEY -- Highway 17 remain closed.
The rockslide is located at milepost 25 along the Banks to Lowman road. It will not be easy to clear off because the rockslide measures about 100 feet high and 100 feet wide. The road literally disappeared under the rockslide; huge rocks even took out the guard rail, sending it down an embankment. Fortunately, no one was hurt during the slide.

KIVI: Boise

March 8, 2004 update - ITD Banks Lowman Road to reopen after rockslide cleanup. Estimated to cost $400,000

January 30, 2004
KTVB: Boise – A powerful storm blew through the Treasure Valley this morning, uprooting trees, causing rockslides, downing power lines and wreaking havoc with motorists.
Idaho 55 was closed between Banks and Cascade for about three hours due to a rock and snow slide that left one person hospitalized. The Boise County Sheriff reports that 64-year-old Kenneth Pattan had to be Life-Flighted from an accident near Banks after a rockslide slammed into his vehicle. Pattan's wife was not injured. Idaho 55 was reopened shortly after noon Friday. Reporter - John Masters

ITD: Idaho 55 closed between Horseshoe Bend and Banks
ITD: Idaho 55 closed between Banks and Cascade
ITD: Idaho 55 reopens, accessible from Boise to New Meadows

August 3, 2003
Idaho Statesman: Inkom, Idaho: wave of mud caused a 1976 Chevrolet Suburban to sweep down a barren hillside and onto the Interstate.

August 25, 2003
Idaho Statesman: Inkom, Idaho A third mudslide in less than a month closed northbound Interstate 15 for two hours.

April 22, 2003 - Boise
Idaho Statesman: Two Boise families were forced from their homes after a mudslide damaged their duplex.
Red Cross: Red Cross helps mudslide victims in Boise's North end neighborhood.

Idaho Statesman: Busted sprinkler likely culprit in Boise mudslide

January 2000
Cape Horn Rockslide: Bayview, Idaho
Governor Dirk Kempthorne signed a state disaster declaration as a result of an imminent threat to life and property caused by a rock slide that closed Cape Horn Road near Bayview in Kootenai County.
The slide isolated approximately 75 homes in Kootenai and Bonner Counties. Engineers assessing the situation indicate the area remains unstable,

October 16, 1998
Boundary County
The mudslide wiped out two miles of Highway 95 and the Union Pacific Railroad. It forced a 110 mile detour for vehicles.

Transport Topics News: Mudslide Multiplies Costs for Idaho Business

September 4, 1997
ITD: U.S. 95 closed due to a rockslide between Riggins and White Bird. updates: 9/5, 9/5, 9/6, 9/8, 9/8, 9/9, 9/12,

July 30, 1997
ITD: Idaho 55 near Lower Banks, and Idaho 52 at milepost 49, both closed by mudslides after a deluge of rain.

July 1, 1997
ITD: Idaho 7 closed at milepost 51 between Ahsahka and Orofino until rocks can be removed from slope above the road. update

June 18, 1997
ITD: Idaho 55 open to traffic; road kept open despite three minor rockslides near Banks

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Bureau of Homeland Security
4040 Guard Street
Building 600
Boise, Idaho 83705
(208) 334-3460