Calling Emergency Supplies. Home Emergency Preparedness. Out-of-Area Contacts. Preparedness Topics A-Z. Vehicle Preparedness. Water Heaters How to secure them. Section: Publications Publications. Before a landslide Get a ground assessment of your property. Your county geologist or county planning department may have specific information on areas vulnerable to landslides. Consult a professional geotechnical expert for advice on corrective measures you can take.
Minimize home hazards Plant ground cover on slopes to stabilize the land, and build retaining walls. Build channels or deflection walls to direct the flow around buildings. Make evacuation plans Plan at least two evacuation routes since roads may become blocked or closed. Learn to recognize the landslide warning signs Doors or windows stick or jam for the first time.
New cracks appear in plaster, tile, brick or foundations. Outside walls, walks or stairs begin pulling away from the building. Slowly developing, widening cracks appear on the ground or on paved areas. Underground utility lines break.
Natural Disasters and Severe Weather. Section Navigation. Facebook Twitter LinkedIn Syndicate. Minus Related Pages. What landslides and debris flows are. What causes landslides and debris flows. On This Page. Health threats from landslides and debris flows. Mudslides often do have the movement of soil in a specific channel. A landslide can happen quite slowly or quite quickly. A mudslide is almost always a quick process that happens suddenly.
Types of landslides include lateral spread, rock fall, mudslide, rotational, and translational forms. Examples of landslides include the rock falls and landslides in Kwazulu-Natal regions in , and Mount St. Helens in Examples of mudslides include Venezuela in , Uttarakhand in , and Sierra Leone in Difference Between Landslide and Mudslide. Difference Between Similar Terms and Objects. MLA 8 Osborn, Dr. Name required. Email required. Please note: comment moderation is enabled and may delay your comment.
There is no need to resubmit your comment. Notify me of followup comments via e-mail. Written by : Dr. Rae Osborn. Chapter 3-Landslide types and processes. Geological Survey and U.
User assumes all risk of use, damage, or injury. You agree that we have no liability for any damages. What is Landslide? Definition: A landslide can be defined as a fairly large-scale movement of rocks and soil debris down a slope or sideways across the land.
Land movement related to landslides, mud and debris flows, and rockfalls occurs naturally across Colorado on a continuous basis, and can also be triggered through human activity primarily related to mining, land development, and other disturbances.
These events can occur at any time of the year from almost any location along a slope; however, because they are correlated with elevation change, these hazards largely occur in the mountainous region from the Front Range to the West Slope. According to READY Colorado , it is estimated that there are thousands of landslides in Colorado each year, with varying degrees of frequency and severity.
A deadly rockfall in September claimed five lives of a vacationing family following heavy rains near a popular hiking location near Buena Vista, Colorado Shoichet, et al. Additionally, drought conditions may lead to soil compaction, and severe wildfire events may leave slopes denuded and hydrophobic. Rockfalls are often caused by erosion of earth around larger rocks that then become loose and fall. Earthquakes can also lead to landslides and rockfalls. Nearly all geologic and soil hazards are highly localized events.
In fact, much of what helps determine the level of hazard risk at a precise location are the features and process that lie underground. These variables make the identification, assessment, and mapping of geologic and soil hazards more difficult, especially for the purpose of designing and implementing planning tools or strategies. In recognition of this fact, the Colorado Geological Survey CGS provides a range of services and resources to assist and advise local planners on geologic hazards, including the review of preliminary plans or reports for new development as well as conducting studies, collecting geologic information, and publishing maps, reports, and bulletins with regard to land use activities.
Still, while a variety of relevant national and statewide data exists to determine hazard risk in a very general sense including geologic, topographic, and soil maps , most Colorado communities do not have readily accessible information or detailed maps necessary for implementing local regulations.
Doing so often requires field surveys and even geotechnical tests by trained earth scientists to identify specific problems associated with land development and public safety.
Consultation with geologists and other experts familiar with local conditions is an important first step for local planners seeking to assess the risk of their community and specific areas that are susceptible to geologic and soil hazards. The CGS and other official sources can provide map information on levels of risk, past hazard events, and the probability of future events. More site-specific data and mapping, however, will need to be obtained through technical studies for specific areas of concern.
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