Land Use Regulations

Rockfall cartoon

Colorado’s great diversity of rocks, geologic structures, soil types, topography, and climatic conditions combine to create vigorous and diverse geologic processes. When humans move into this dynamic environment, these natural processes can become problematic as geologic hazards.

For example, naturally occurring, inactive landslides may be triggered into renewed activity by the construction of roads or buildings that disrupt the stability of the slope. In addition, many of Colorado’s geologic hazards, such as heaving bedrock, swelling soils, and collapsible soils are commonly triggered by human activity that could have been mitigated though proper land-use practices.

Other geologic hazards, like earthquakes, rockfall, mudslides, and avalanches are naturally occurring. These can wreak havoc on buildings, roads, and other engineered structures.

The Colorado Geological Survey is directed by statute to review geologic reports for new developments in unincorporated areas of the state with lot sizes less than 35 acres.We supply a report to the counties stating whether the geologic hazards present on the site have been properly identified and that the proposed plan of mitigation is adequate. Our goal is to reduce the impact of geologic hazards on the lives and property of our citizens.

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