Event no. |
Date |
Type of landslide |
Reference area or town |
Estimated volume (m3) |
Elevation |
Reference |
1* |
6/23/25 |
Debris avalanche |
Jackson Hole, Wyoming |
40 x 106 |
2740 |
Voight, 1978 |
2 |
4/19/79 |
Debris slide/flow |
Mesa Verde National Park, Colorado |
<1 x 103 |
2375 |
Montezuma Valley Journal, 4/20/79 |
3 |
4/29/79 |
do. |
do. |
2 x 103 |
2390 |
do. |
4 |
4/30/79 |
do. |
do. |
1.2 x 103 |
2375 |
do. |
5* |
5/24/79 |
Debris flow |
Pagosa Springs, Colorado |
2 x 103 |
2990 |
The Pagosa Springs Sun, 5/31/79 |
6 |
5/21/82 |
do. |
Steamboat Springs, Colorado |
<1 x 103 |
2286 |
Steamboat Pilot, 5/27/82 |
7 |
5/27/83 |
do. |
Redstone, Colorado |
<1 x 103 |
2710 |
Glenwood Post, 5/31/83 |
8* |
5/30/83 |
Rock and soil slide |
Glenbrook, Nevada |
7.2 x 105 |
2500 |
Watters, 1983 |
9* |
5/30/83 |
Debris flow |
Farmington, Utah |
? |
2110 |
Kaliser, 1983; Wieczorek, 1989 |
10 |
5/12/84 |
do. |
Steamboat Springs, Colorado |
<1 x 103 |
2075 |
Steamboat Pilot, 5/17/84 |
11* |
5/13/84 |
do. |
Fairview, Utah |
? |
2620 |
Fleming and Schuster, 1985 |
12 |
5/13/84 |
Debris flow |
Telluride, Colorado |
? |
2925 |
Telluride Times, 5/17/84 |
13 |
5/14/84 |
Slide/flow |
Oak Creek, Colorado |
<1 x 103 |
2225 |
Steamboat Pilot, 5/17/84 |
14* |
5/14/84 |
Slide/debris flow |
Layton, Utah |
1 x 103 |
2225 |
Olson, 1985 |
15* |
5/23/84 |
do. |
Farmington, Utah |
<9 x 103 |
2110 |
McCarter and others, 1985 |
16 |
6/1/84 |
Slide/debris flow |
Silverthorne, Colorado |
? |
2680 |
Summit County Journal, 6/14/84 |
17 |
4/16/85 |
Slump/debris flow |
Granby, Colorado |
4 x 103 |
2490 |
Schuster, 1986 |
18 |
4/26/85 |
Slump/earthflow |
DeBeque, Colorado |
? |
1950 |
Umstot, 1989 |
19 |
4/30/87 |
Slides/debris flows |
Telluride, Colorado |
2.5 x 104 |
2745 |
Stover and others, 1987 |
20 |
5/19/93 |
Debris flow |
Steamboat, Colorado |
? |
2500 |
Steamboat Pilot, 5/27/93 |
21 |
5/27/93 |
do. |
Aspen, Colorado |
? |
2925 |
Aspen Daily News, 5/28/93 |
22 |
5/8/96 |
do. |
Silverthorne, Colorado |
4 x 103 |
2650 |
Chleborad, unpublished field notes, 1996 |
23 |
5/13/96 |
Debris flow |
Aspen, Colorado |
3.8 x 103 |
2955 |
Chleborad, 1996; Chleborad and others, 1997 |
24* |
4/29/97 |
do. |
Clark, Colorado |
<1 x 103 |
2205 |
Steamboat Pilot, 4/30/97 |
25* |
5/18/97 |
Slump/debris flow |
Jackson Hole, Wyoming |
4.6 x 105 |
2180 |
G. Michael Hager, Wyoming Department of Transportation personal comm., 1997 |
26* |
5/26/97 |
Earthflow |
Moran, Wyoming |
1.1 x 105 |
2500 |
U.S. Forest Service, internal memorandum, 5/28/97 |
27* |
5/26/97 |
Debris flow |
Aspen Colorado |
<1 x 103 |
2940 |
Chleborad and others, 1997 |
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