Recent Landslides in Salmon Creek Canyon, Idaho

Analysis of LiDAR-derived topographic information for characterizing and differentiating landslide morphology and activity

“…Lee (1938) proposed that the 1937 slide was caused by Salmon Falls Creek deepening its channel and undercutting the toe. Like the Salmon Falls landslide, fractures are present along the upper portion of the landslide; several basalt masses broke away from the canyon rim at those fractures and slid into the canyon (Fig.…”

Application of multi-temporal high-resolution imagery and GPS in a study of the motion of a canyon rim landslide

“…In 1937, large blocks of the canyon wall and floor materials totaling approximately 6 km 2 in area slid several tens of meters into the canyon. Rapids and small ponds were formed in Salmon Falls Creek by the encroachment of the slide material (Lee, 1938). The current, 2 km 2 bSalmon Falls landslideQ (also called the Bluegill landslide) developed about 1 km to the south of the 1937 activity, developing on pre-existing canyon-rim fractures.…”

New insights on the Salmon Falls Creek Canyon landslide complex based on geomorphological analysis and multitemporal satellite InSAR techniques

“…The uplifted toe material forms a contractional fold that exhibits extensional fracturing on its outer arc. The earliest recorded event was the 1937 landslide (Lee 1938) and is the northern slide complex (Fig. 1).…”

“…Numerous landslides have widened Salmon Falls Creek Canyon in this area; however, this study focuses on the two most recent events: the Sinking Canyon landslides that were first reported in 1937 [referred to hereafter as the 1937 landslide complex, Lee (1938)] and the Salmon Falls Creek landslide, also referred to as the Bluegill landslide (Ellis et al 2004), that initiated in 1990 and continued as late as 2008 (Morris et al 2007;Kenney et al 2009). …”