Tag
geologic hazard
6 Porch Notes tagged “geologic hazard,” from counties across Colorado.
Home and property - Arapahoe County
Expansive soils are a normal home question along Arapahoe County's Front Range
Much of the Front Range urban corridor that includes Arapahoe County sits on clay-rich soils that can swell and shift, which is why foundations get extra attention here.
Read note ->Home and property - Douglas County
In parts of Douglas County, the ground under a house can move
Some areas of Douglas County sit on steeply tilted, swelling bedrock that can heave and damage foundations, which is why the state geological survey maps it.
Read note ->Home and property - Boulder County
In the Boulder County foothills, the creek and the hillside both carry hazard
Steep foothills drainages in Boulder County can produce debris and mud flows in heavy rain, sometimes well beyond the mapped floodplain.
Read note ->Home and property - Garfield County
After a wildfire near Glenwood Springs, the slopes can stay dangerous
Burn scars above Glenwood Springs and Glenwood Canyon can send debris flows and mud during heavy rain for years after a fire, which is a real consideration for nearby property and travel.
Read note ->Home and property - Hinsdale County
The Slumgullion Earthflow is a slow landslide you can see from the road
A slow-moving earthflow near Lake City dammed a river to form Lake San Cristobal and parts of it are still moving today.
Read note ->Home and property - Mesa County
Reading the layered plateau country above the Grand Valley in Mesa County
The high plateaus above the Grand Valley are dramatic, layered geology worth understanding. The Colorado Geological Survey maps where the ground can move, including the 2014 West Salt Creek landslide near Collbran that took three lives.
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