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Landslides are the down-slope movement of unconsolidated material under
the influence of gravity and are widespread in the province. The
introduction of excess quantities of water to the slope, either from
rainfall or snowmelt commonly is the trigger for such events. Excess
water loads the slope material beyond its shear strength, at which point
movement occurs. The water may also act as a lubricant and movement is
commonly rapid. These landslides are known as debris flows or debris
torrents. The slope angle and sediment texture (grain-size of material
involved) are other important factors that control drainage from a slope.
Areas on the slope with better drainage, commonly near the top, may fail
by rotational slumping (where a block of sediment slowly rotes downward)
during failure of the lower slope by flowage.
Map
indicating landslide locations.
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The list below is somewhat slanted toward incidents in the Humber -
Corner Brook area; the main source of information was the Western Star,
which tended to report local events in more detail. Although this area
is highly landslide prone, many other similar incidents elsewhere in the
province remain to be documented.
bold text indicates fatal incident.
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Bay de Verde, December 9, 1912
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Bell Island, Feb 13, 1914
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Betts Cove, May 15, 1883
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Branch, 1869
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Bishops Falls, Apr 16, 1986
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Cape Cove, 1860
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Cape Cove, Jun 4, 1911
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Corner Brook - Humber Arm area
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Corner Brook, Apr 22, 1906
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Corner Brook, Nov 6, 1945
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Corner Brook, Nov 14, 1954
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Corner Brook, Oct 16, 1958
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Corner Brook, Nov 8, 1958
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Corner Brook, Apr 10, 1962
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Corner Brook, May 1, 1967
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Corner Brook, May 20, 1974
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Corner Brook, Sep 28, 1975
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Corner Brook, Dec 26, 1977
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Curling, Jan 4, 2004
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Cox's Cove, Feb 19, 1996
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Crow Gulch, Corner Brook, May 5, 1930
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Crow Gulch, Corner Brook, Aug 6, 1935
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Between Cook's Brook and Benoits Cove, Nov 28, 1906
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Curling, Oct 27, 1914
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Duncans Rock, 3 miles east of Corner Brook, Oct 27, 1914
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Humbermouth, Corner Brook, Apr 20, 1940
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Irishtown, Apr 4, 1969
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Irishtown, Feb 17, 1969
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Irishtown, Sep 28, 1975
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Mount Moriah, Bay of Islands, Jan 29, 1901
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Mount Moriah, Jan 7, 1909
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Mount Moriah, Oct 20, 1914
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Mount Moriah, Jun 12, 1915
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Port Blandford, April 11, 1951
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Pouch Cove, August 1903
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Quarry Hill, Curling Road, Dec 2, 1982
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Riverside Drive, Corner Brook, Apr 19, 1994
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Riverside Drive, Corner Brook, Sep 27, 2005
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Voy's Beach, Humber Arm, Nov 29, 1935
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Beaches, Humber Arm, Apr 19, 1892
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Shellbird Island, Humber River, May 19, 1985
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Shellbird Island, Humber River, Dec 1, 1930
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Deer Arm, May 10, 1980
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Gillams, May, 1979
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John's Beach, Apr 15, 1993
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Petries Crossing, Curling, May 22, 1950
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Little Port, Bay of Islands, Jul 7, 1994
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Middle Arm, Nov 29, 1935
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Daniel's Harbour, Oct 20, 2006
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Daniel's Harbour, April 15-20, 2007
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Daniel's Harbour, June 18, 2008
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Englee, Oct 15, 1993
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Francois, 1960s
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Gambo, Oct 23, 1953
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Georges Lake, March 30, 2003
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Gaultois, Sep 15, 1992
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Gull Rocks, Gros Morne Park, Jun 3, 1980
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Harbour Breton, Aug 1, 1973
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Harbour Grace, 1838
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Little Bay, Burin Peninsula, September 11, 1995
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Little Grand Lake, Jun 8, 1995
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Little River, near Stephenville Crossing (location unsure), Jul 14, 1903
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Manuels, August 19, 1889
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Middle Arm, Baie Verte Peninsula, April 18, 2006
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Outer Cove, Avalon Peninsula, Jun 26, 1930
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Pierres Brook near Bay Bulls, Oct 31, 1949
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Placentia area, July 24, 1888
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Placentia area, Oct 3, 1923
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Placentia-Argentia road, Sep 15, 1948
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Pynn's Brook, May 2, 1970
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Romaines, Port au Port, May 25, 1994
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Southport, Trinity Bay, May 9 2003
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St. Fintans, Mar 11, 1949
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St. John's
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South Side Road, St. John's, Jul 26, 1912
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Petty Harbour, Jul 26, 1912
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St. John's, Oct 13, 1934
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South Side Road, St. John's, Feb 23, 1936
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South Side Road, St. John's, Sep 15, 1948
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Mill Bridge near St. John's rail yard, Oct. 1953
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Portugal Cove, Jun 27, 1930
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Stephenville, May, 1957
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Table Mountains, Mar 9, 1950
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Tilton, 1887
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For more information on landslides we recomend the following external web
sites:
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