1. Geologic Hazards--Landslides (USGS) National Landslide Hazards Mitigation StrategyA Framework for. Loss Reduction USGS Circular 1244. National Landslide Mitigation http://landslides.usgs.gov/

National Landslide Hazards Mitigation StrategyA Framework for Loss Reduction - USGS Circular 1244 National Landslide Mitigation Strategy Wildfire-Induced Debris Flows National Landslide Hazards Program National Landslide Information Center ... U.S. Geological Survey, a bureau of the U.S. Department of the Interior Comments and feedback: Webmaster Our home web address is: http://geohazards.cr.usgs.gov/index.html Page last modified/created: 23 March, 2004 FOIA Privacy Statement

2. Landslides landslides. Grand Ditch and Poudre Pass Mosaic, Rocky Mountain National Park Colorado. The image above shows part of the Grand Ditch http://www.rsr.org/landslides.html

Landslides Grand Ditch and Poudre Pass Mosaic, Rocky Mountain National Park Colorado The image above shows part of the Grand Ditch in Rocky Mountain National Park. This ditch carries water from the Colorado River Basin across the Continental Divide and irrigates farms in northeast Colorado. The city of Thornton, located near Denver, recently purchased rights to half the water flowing through the ditch to support future city growth. The Department of the Interior asked RSR to provide aerial photography of water diversions in Rocky Mountain National Park. These photos establish a data base to record changes and direct restoration efforts in the Park. These photos were entered as evidence in a water rights trial to demonstrate effects of water diversion from federal lands. South Portion of the Grand Ditch The above mosaic show about 10 miles of the ditch corridor. The map below depicts the area covered in the mosaic. These images show a portion of the ditch that was damaged by a landslide. The image on the left was taken with a wide-angle lens, while the other image was made with a normal lens. They were used by the U.S. Departments of Interior and Agriculture in a landmark water rights trial to show the effects of water diversion. The water is carried through a culvert beneath the road visible in the photo on the right. All the images were taken from an RPV that was launched and landed on this road. The image on the left shows a failure of the Grand Ditch. The ditch is visible along the left edge of the the photo on the left. A landslide filled the ditch, causing it to fail. The water in the ditch overflowed its banks and caused the gully that goes from left to right in the image. This gully can be seen in the photo on the right, indicated by the arrow. The ditch overflow drained into the headwaters of the Colorado River, which is also visible in the right image.

3. Landslides Geologic Hazards Information landslides. Inventory of landslides Triggered by the 1994 Northridge, CA Earthquake http://www.usgs.gov/themes/landslid.html

Effects of El Nino Geologic Hazards Information Landslides Inventory of Landslides Triggered by the 1994 Northridge, CA Earthquake National Landslide Information Center ... USGS Programs in Nebraska: Landslide Hazard Hazard-Related Fact Sheets Return to Hazards Home Page Return to Thematic Approach home page Content Information Contact: Hazards Theme Coordinator Privacy Statement Accessibility FOIA ... U.S. Geological Survey URL: http://www.usgs.gov/themes/landslid.html Ask USGS Last modified: 03-Sep-2002@09:41

4. FEMA: Landslides landslides. What Is A Landslide? landslides are a serious geologic hazard common to almost every state in the United States. It http://www.fema.gov/hazards/landslides/

Hazards Assistance Flood Maps NPSC ... Hazards Landslides Search FEMA Hazards Dam Safety Earthquakes Extreme Heat ... Mitigation Division Landslides What Is A Landslide? Landslides are a serious geologic hazard common to almost every state in the United States. It is estimated that nationally they cause up to $2 billion in damages and from 25 to 50 deaths annually. Globally, landslides cause billions of dollars in damage and thousands of deaths and injuries each year. Individuals can take steps to reduce their personal risk. Know about the hazard potential where you live, take steps to reduce your risk, and practice preparedness plans. Some landslides move slowly and cause damage gradually, whereas others move so rapidly that they can destroy property and take lives suddenly and unexpectedly. Gravity is the force driving landslide movement. Factors that allow the force of gravity to overcome the resistance of earth material to landslide movement include: saturation by water, steepening of slopes by erosion or construction, alternate freezing or thawing, earthquake shaking, and volcanic eruptions. Landslides are typically associated with periods of heavy rainfall or rapid snow melt and tend to worsen the effects of flooding that often accompanies these events. In areas burned by forest and brush fires, a lower threshold of precipitation may initiate landslides.

5. GEOLOGIC HAZARDS TEAM (Earthquakes/Geomagnetic/Landslides) USGS (Geological Survey) team page, covering geologic hazards, specifically earthquakes, landslides, and geomagnetism. http://geohazards.cr.usgs.gov/

Earthquakes Geomagnetism Landslides Seismic Hazards ... Volcanoes U.S. Geological Survey, a bureau of the U.S. Department of the Interior Comments and feedback: Webmaster Our web address is: http://geohazards.cr.usgs.gov/ Last modified: 12 March, 2004 USGS Privacy Statement FOIA Accessibility

6. Protecting Our Ports And Harbors Introduction To Landslides Vulnerability. Mitigation Options. Port/Harbor Atlas. Planning Tool. Resources. landslides in the Pacific Northwest. Introduction. Landslide is a general term which encompasses all types of downward http://www.csc.noaa.gov/products/tsunamis/htm/cascadia/ld_intro.htm

Earthquakes and Tsunamis . . . building more resilient port and harbor communities Overview Hazards Vulnerability Mitigation Options ... Resources Landslides in the Pacific Northwest Introduction Landslide is a general term which encompasses all types of downward movement of material. Landslides usually start on steep slopes and move downward by the force of gravity, accelerating to speeds of up to 35 miles per hour. Landslides occur in every state of our country and are annually responsible for an estimated 25 to 50 deaths and $1 to $2 billion in property damage (FEMA 1995). Researchers suggest that approximately 40 percent of the United States' population is either directly or indirectly affected by landslide events. What Are the Characteristics of a Landslide? The Pacific Northwest is particularly susceptible to landslides due to the significant amount of precipitation and the earthquake potential of the Cascadia region. These two natural agents act as triggering events for landslides. The principal natural factors, which play a role in landslide potential, are topography, geology, and precipitation. Areas with steep slopes are more susceptible to landslides than flat areas. In general the more precipitation an area experiences the greater the potential for landslides. The type of material that is most prone to landslides, especially in the Pacific Northwest, is a loose type of sediment composed of silt, sand, gravel, and cobble stones called colluvium. This type of material is characteristic of areas with high precipitation and steep slopes.

7. Printer-Friendly Format The Problem. What Are landslides? Types of landslides. Causes of landslides. See Simulation. Related Links. landslides in the US. See simulation of a slide. Contacts. http://www.planning.org/landslides/

document.location.replace('/landslides/docs/main.html'); Printer-Friendly Format Research Landslide Hazards and Planning document.write(document.title); Last Updated: 06/04/2003 Search Landslides All of APA Project Home The Problem What Are Landslides? Types of Landslides ... Landslides in the US See simulation of a slide Contacts Researchers Join mailing list (c) APA

8. National Landslide Information Center -- NLIC -- Home Page landslides 101 Recent landslides Events Landslide Images Pubs State Local Info. What is a landslide? landslides 101. Firerelated debris flows, http://landslides.usgs.gov/html_files/nlicsun.html

Landslides 101 Current Projects About Us Search ... Home Menu options are available from navigational links that came just before here. Menu options are available from navigational links that came just before here. Significant Landslide Events in the United States Prototype System for Forecasting Precipitation-Induced LandslidesSeattle Area Post-Fire Advisory Flood Hazard Maps for California Available from the Emergency Management Agency (FEMA) - potential debris-flow hazard. Updated Information for other areas also available. Landslides 101 Current Projects About Us ... U.S. Geological Survey a bureau of the U.S. Department of the Interior Comments and feedback: Webmaster Our home web address is: http://landslides.usgs.gov/html_files/nlicsun.html Page last modified/created: 14 April, 2004 10:17 FOIA Privacy Statement Accessibility

9. FEMA: Fact Sheet: Landslides And Mudflows Home » Hazards » Fact Sheet landslides and Mudflows. Fact Sheet landslides and Mudflows. Landslide and mudflows usually strike without warning. http://www.fema.gov/hazards/landslides/landslif.shtm

Hazards Assistance Flood Maps NPSC ... Hazards Fact Sheet: Landslides and Mudflows Search FEMA Hazards Dam Safety Earthquakes Extreme Heat ... Mitigation Division Fact Sheet: Landslides and Mudflows Landslide and mudflows usually strike without warning. The force of rocks, soil, or other debris moving down a slope can devastate anything in its path. Take the following steps to be ready. BEFORE Get a ground assessment of your property. Your county geologist or county planning department may have specific information on areas vulnerable to landsliding. Consult a professional geotechnical expert for opinions and advice on landslide problems and on corrective measures you can take. Minimize home hazards. Plant ground cover on slopes and build retaining walls. In mudflow areas, build channels or deflection walls to direct the flow around buildings. Remember: If you build walls to divert debris flow and the flow lands on a neighbor's property, you may be liable for damages. Learn to recognize the landslide warning signs.

10. Landslides DiscoverySchool.com landslides DiscoverySchool.com Junior high lesson plan to help students understand the design and controlled variables in an experiment so that they can produce their own. The objective of the http://rdre1.inktomi.com/click?u=http://school.discovery.com/lessonplans/program

11. USGS National Landslide Information Center USGS National Landslide Information Center United States Geological Survey (USGS) scientists are working to reduce longterm losses and casualties from landslide hazards through better http://rdre1.inktomi.com/click?u=http://landslides.usgs.gov/html_files/nlicsun.h

12. Landslides!--Earth Science Lesson Plan (grades 6-8)--DiscoverySchool.com Students learn how different soil materials can produce varying types of landslides; how scientists can predict where landslides could occur. http://school.discovery.com/lessonplans/programs/landslides/

Grades K-5 Grades 6-8 Grades 9-12 Astronomy/Space ... Health History Ancient History U.S. History World History Life Science Animals Ecology Human Body The Microscopic World ... Weather For our newsletter and special teacher promotions. 6-8 > Earth Science Grade level: 6-8 Subject: Earth Science Duration: One to two class periods Objectives Materials Procedures Adaptations ... Credit Find a video description, video clip, and discussion questions. Erosion: Landslide Use our free online Teaching Tools to create custom worksheets, puzzles and quizzes on this topic! Students will understand the following: How to design an experiment and how to control different variables in an experiment. How different soil materials can produce varying types of landslides. How scientists can predict where landslides could occur. For this lesson, you will need: Stream table or a container to act as a stream table (milk carton with one side cut away) Materials to line stream table: sand, soil, pebbles, diatomaceous earth, clay, mixture of material Graduated cylinder Watering can (soda bottle) Plastic sheeting or newspaper to cover lab tables or floor Scale or balance to measure amount of material in landslide (optional) Introduce the different types of landslides that occur. Discuss the different conditions that trigger each type and the resulting damage wrought by each type.

13. Volcano Landslides Volcano landslides Information given in this United States Geological Survey (USGS) publication includes a description of volcano landslides, how they are generated, and their effects on http://rdre1.inktomi.com/click?u=http://volcanoes.usgs.gov/Hazards/What/Landslid

14. Landslides Aerial Photography landslides specializes in illustrative aerial photography and works throughout the United States for clients in the fields of advertising and editorial design http://www.landslides.com/

Landslides specializes in illustrative aerial photography and works throughout the United States for clients in the fields of advertising and editorial design, land-use planning and architecture, environmental protection, and historic preservation, among others. Our mission is to create and distribute artistic and meaningful images that help our clients bring understanding and beneficial results to our natural and built environments. During the last 25 years we have developed a library of over 350,000 aerial photographs. Our images not only provide representations of specific places, but also clearly illustrate complex ideas and concepts. We distribute these images from our office in Cambridge, Massachusetts, and insure their lasting value and proper use by way of licensing agreements that are customized to our clients' needs. RECENT EVENTS: Forum Universal de les Cultures: Barcelona, Spain Inhabiting the World: May 9th - September 26th, 2004 MacLean's Prints have been included in the Universal Forum of Cultures, which is the first edition of a large-scale international event that will bring people from all over the world together in the city of Barcelona. The Forum is intended to promote study, reflection and research through a process of dialogue involving all of the agents and all of the cultures that make up today's world. The purpose of the event is to contribute to building a culture based on peace, diversity, and sustainability.

15. Puget Sound Landslides: Home Page This is the home page of Puget Sound landslides, a Web site by the Washington State Department of Ecology. Heavy rains bring landslides. Be prepared. More http://www.ecy.wa.gov/programs/sea/landslides/

Winter in the Northwest brings rain. Heavy rains bring landslides. Be prepared. More... Landslides are common on Puget Sound. Reduce your risks. Many slides occur after heavy rain. Check your drainage. Buying property? Investigate slope stability. home about slides warning signs what to do prevention ... ecology home

16. Puget Sound Landslides: Slope Stability Maps Shorelines and steep slopes are dynamic areas and many landslides have occurred since that time that are not reflected on these maps. http://www.ecy.wa.gov/programs/sea/landslides/maps/maps.html

Uses and limitations These maps are intended to educate the public about Washington's shoreline and to guide regional land use decisions. These maps should not be used as a substitute for site-specific studies carried out by qualified geologists and engineers. The Department of Ecology assumes no liability for the data depicted on these maps. For additional information, contact the Shorelands and Environmental Assistance Program, Washington State Department of Ecology. Not all slides have been mapped Designations, delineations, and boundaries were based on the best judgement of geologists and their depiction on the maps reflects the mapping and cartographic methods applied at the time. Due to either lack of geological evidence or to cartographic limitations, some unstable areas may not be fully identified on these maps. The Department of Ecology can make no warranty of the accuracy, completeness, or fitness for use of this information. Background The maps presented at this site were originally published in the Coastal Zone Atlas of Washington between 1978 and 1980. Although the Atlas has been out of print for many years, the maps contain useful information and remain the basis for many local planning decisions. The maps indicate the relative stability of coastal slopes as interpreted by geologists based on aerial photographs, geological mapping, topography, and field observations. Such methods are standard, but may occasionally result in some unstable areas being overlooked and in some stable areas being incorrectly identified as unstable. Important land use or building decisions should always be based on detailed geotechnical investigations.

17. Landslides Aerial Photography landslides specializes in illustrative aerial photography and works throughout the United States for clients in the http://www.landslides-aerials.com/

Landslides specializes in illustrative aerial photography and works throughout the United States for clients in the fields of advertising and editorial design, land-use planning and architecture, environmental protection, and historic preservation, among others. Our mission is to create and distribute artistic and meaningful images that help our clients bring understanding and beneficial results to our natural and built environments. partners: novafex.com fathead blue Mortgages lower payments The Mortgages online mortgages.com Loan Comparison.net ... american loans Debt Sites debt free management American Debt Reduction lower rate site. debt control professionals Fast Cash Loans fast cash application express cash one click cash pay day cash ... fast funds online store

18. SpringerLink - Publication italian landslides photos and I often go to work on landslide sites. On this page I want to show you some of the landslides I met during the last 10 years. http://www.springerlink.com/link.asp?id=110832

19. Landslides In BC In fact, in British Columbia the loss of life and damage to property caused by landslides is greater than losses caused by other natural hazards such as http://www.em.gov.bc.ca/Mining/Geolsurv/Surficial/landslid/default.htm

Landslides in BC The Hope slide, 18 kilometres east of Hope, was one of the largest slides in Canadian history. The southwestern slope of Johnson Peak, collapsed on January 9, 1965, spreading 47 million cubic metres of debris, 85 metres thick, over a 3 kilometre stretch of the Hope-Princeton highway. The slide occurred in an unpopulated area in early morning hours and resulted in four deaths (photo courtesy of the Ministry of Environment, Lands and Parks). What do we mean by the word "landslide"? Landslide is a general term used to describe the down-slope movement of soil, rock and organic materials under the influence of gravity. It also describes the landform that results. British Columbia's steep, mountainous terrain, its complex geology, its high precipitation, both as rain and snow, its abundance of unconsolidated glacial sediments , and its geographic position astride the earthquake zone that surrounds the Pacific Ocean, all combine to make our province particularly susceptible to landslide activity. In fact, in British Columbia the loss of life and damage to property caused by landslides is greater than losses caused by other natural hazards such as earthquakes and flooding. As our cities, towns, roads and highways steadily encroach onto steeper slopes and mountainsides, landslide hazards become an increasingly serious threat to life and property. However, by understanding the answers to the following questions, we may be able to lessen the effects of landslides.

20. What Causes Landslides? Some slopes are susceptible to landslides whereas others are more stable. landslides often occur along planes of weakness that may parallel the hill slope. http://www.em.gov.bc.ca/Mining/Geolsurv/Surficial/landslid/ls1.htm

What causes landslides? Some slopes are susceptible to landslides whereas others are more stable. Many factors contribute to the instability of slopes, but the main controlling factors are the nature of the underlying bedrock and soil, the configuration of the slope, the geometry of the slope, and ground-water conditions . Three distinct physical events occur during a landslide: the initial slope failure, the subsequent transport, and the final deposition of the slide materials. Landslides can be triggered by gradual processes such as weathering , or by external mechanisms including: Undercutting of a slope by stream erosion, wave action, glaciers, or human activity such as road building, Intense or prolonged rainfall , rapid snowmelt, or sharp fluctuations in ground-water levels, Shocks or vibrations caused by earthquakes or construction activity, Loading on upper slopes, or A combination of these and other factors. Once a landslide is triggered, material is transported by various mechanisms including sliding flowing and falling . Landslides often occur along planes of weakness that may parallel the hill slope. In bedrock, planes of weakness are usually

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