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Tonka Mountain slide poses low risk


January 21, 2021

A portion of Tonka Mountain was stripped down to the bedrock in a landslide on Nov. 1, as a result of heavy rainfall and soil saturation, according to District Ranger Ted Sandhofer, with the United States Forest Service.

The normal amount of rainfall over Petersburg for Nov. 1 is .48 inches, according to the National Oceanic and Atmospheric Administration but on Nov. 1, 2020, 4.17 inches fell. The above average rainfall led to increased soil saturation on Tonka Mountain and ultimately the landslide.

Because of the limited amount of field work being done by the USFS as a result of the pandem...

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