CRREL Ice Jam Database
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Map View and Spatial Query
Map View Options
Water year
All (Slow)
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1972
1971
1970
1969
1968
1967
1966
1965
1964
1963
1962
1961
1960
1959
1958
1957
1956
1955
1954
1953
1952
1951
1950
1949
1948
1947
1946
1945
1944
1943
1942
1941
1940
1939
1938
1937
1936
1935
1934
1933
1932
1931
1930
1929
1928
1927
1926
1925
1924
1923
1922
1921
1920
1919
1918
1917
1916
1915
1914
1913
1912
1911
1910
1909
1908
1907
1906
1905
1904
1903
1902
1901
1900
1899
1898
1897
1896
1895
1894
1893
1892
1891
1889
1888
1887
1886
1885
1884
1883
1881
1880
1879
1877
1876
1875
1874
1873
1872
1871
1870
1869
1868
1867
1866
1865
1859
1858
1857
1856
1848
1846
1843
1839
1836
1835
1832
1831
1826
1811
1807
1795
1794
1785
1784
1780
Aggregate:
False
True
Select a water year. Aggregate only works when water year is set to "All (slow)".
Historical Proximity
Distance(mi):
1
2
5
10
25
50
100
200
500
1000
1. Select a radius.
2. Click on an Ice Jam.
3. Click "Spatial Query".
4. View results below map.
Polygon Query
1. Use the "Draw a polygon" tool located in the top right corner of the map to create a polygon.
2. Click "Spatial Query".
3. View report below map.
Reset
Spatial Query
Selection Report
Polygon Report
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