Sentinel Hill - Montana weatherby mountain columbia river gorge

Sentinel Hill in Montana shows the strand lines of Glacial Lake Missoula and the Clark Fork River

The strand lines that are visible on the slope of Sentinel Hill in Montana are alleged to be evidence that there were multiple Glacial Lake Missoula Ice Age Floods. The river at the base of the hill is the Clark Fork River that was dammed during the Ice Age creating Glacial Lake Missoula.Each of the individual lines are alleged to mark the shoreline for each of up to 100 multiple lake levels. One the most obvious fallacies of this hypothesis is that the strand lines are evenly spaced. If the strand lines were in fact multiple shorelines of the lake it is very unlikely that the strand lines would be evenly spaced. The more likely scenario is that the evenly spaced strand lines were created by diurnal fluctuations as the lake rose behind the ice dam. There are numerous examples in the path of the flood in Eastern Washington as Glacial Lake Lewis rose behind Wallula Gap in Washington including Burlingame Canyon in the Touchet Formation in the Walla Walla River Valley.

Weatherby Mountain - Oregon

Weatherby Mountain in Eastern Oregon shows the strand lines laid down by the Lake Bonneville Flood

Weatherby Mountain is located south of LaGrande in Eastern Oregon along I-84 East. The strand lines that appear on the slope of the mountain are similar to those that are visible on Sentinel Hill in Montana. The lines were created by flood waters of Glacial Lake Bonneville in Utah after the earthen dam broke at Red Rock Pass Spillway south of Pocatello, Idaho. The resulting lake in Idaho and Oregon was backed up by the narrow gap at the southern end of Hells Canyon on the Snake River north of Ontario, Oregon. The gap at Hells Canyon is analogous with Wallula Gap in Washington during the Glacial Lake Missoula Flood. Geologists agree that there was only one Glacial Lake Bonneville Ice Age Flood. Therefore, the strand lines on the slope of Weatherby Mountain and elsewhere in Idaho and Oregon could not have been created as multiple lake shorelines as the lake(s) filled. The only possible scenario is that the strand lines were formed as diurnal deposits in only one lake.