Number of records found: 47
| RIVER | LOCATION | BREAKUP DATE | BREAKUP YEAR | DATE ICE MOVED | FIRST BOAT | UNSAFE FOR MAN | UNSAFE FOR VEHICLE | TYPE OF VEHICLE | DATE OF LAST ICE | REMARKS |
|---|---|---|---|---|---|---|---|---|---|---|
| Yukon River | Marshall | 05-16 | 1938 | |||||||
| Yukon River | Marshall | 05-25 | 1939 | |||||||
| Yukon River | Marshall | 04-25 | 1940 | |||||||
| Yukon River | Marshall | 05-09 | 1941 | |||||||
| Yukon River | Marshall | 05-09 | 1942 | |||||||
| Yukon River | Marshall | 05-26 | 1949 | |||||||
| Yukon River | Marshall | 05-15 | 1950 | |||||||
| Yukon River | Marshall | 05-07 | 1951 | |||||||
| Yukon River | Marshall | 05-30 | 1952 | |||||||
| Yukon River | Marshall | 05-10 | 1954 | |||||||
| Yukon River | Marshall | 05-18 | 1955 | |||||||
| Yukon River | Marshall | 05-16 | 1956 | |||||||
| Yukon River | Marshall | 05-06 | 1957 | |||||||
| Yukon River | Marshall | 05-22 | 1958 | |||||||
| Yukon River | Marshall | 1961 | 05-11 | 05-05 | Plane | 05-27 | ||||
| Yukon River | Marshall | 1965 | 05-18 | 05-12 | 05-29 | |||||
| Yukon River | Marshall | 1967 | 05-19 | 05-06 | 05-02 | 05-22 | ||||
| Yukon River | Marshall | 1968 | 05-10 | 05-03 | 05-26 | |||||
| Yukon River | Marshall | 1969 | 05-12 | 04-30 | 04-24 | 05-12 | ||||
| Yukon River | Marshall | 1970 | 05-10 | 05-04 | 05-22 | |||||
| Yukon River | Marshall | 1971 | 06-01 | 05-22 | 04-17 | 05-31 | ||||
| Yukon River | Marshall | 1972 | 05-23 | 05-30 | 05-20 | 05-18 | snowmachine | 05-30 | ||
| Yukon River | Marshall | 1973 | 05-14 | 05-24 | 05-09 | 05-07 | snowmachine | 05-24 | Ice conditions very poor, deteriorated very fast. | |
| Yukon River | Marshall | 1974 | 05-06 | 05-20 | 05-02 | 04-29 | snowmachine | 05-24 | Ice run very erratic, river clear at times for sev | |
| Yukon River | Marshall | 1975 | 05-25 | 05-27 | 05-14 | 05-08 | snowmachine | 05-26 | Ice run for about 3 1-2 hours then thinned out. Wa | |
| Yukon River | Marshall | 1977 | 05-20 | 05-28 | 05-12 | 05-08 | snowmachine | 05-28 | ||
| Yukon River | Marshall | 1978 | 05-06 | 05-17 | 04-22 | 04-20 | snowmachine | 05-17 | ||
| Yukon River | Marshall | 04-30 | 1979 | 04-30 | 04-28 | 04-26 | snowmachine | 05-16 | ||
| Yukon River | Marshall | 1980 | 05-17 | 05-01 | 04-29 | snowmachine | 05-17 | |||
| Yukon River | Marshall | 05-10 | 1981 | 05-10 | 05-18 | 05-08 | 05-06 | snowmachine | 05-19 | |
| Yukon River | Marshall | 1982 | 05-30 | 05-18 | 05-14 | snowmachine | 05-29 | Normal breakup. 1 1-2 days ice run. | ||
| Yukon River | Marshall | 05-20 | 1984 | |||||||
| Yukon River | Marshall | 05-30 | 1985 | 05-26 | 06-02 | 05-20 | 05-14 | snowmachine | ||
| Yukon River | Marshall | 05-14 | 1986 | 05-14 | 05-30 | 05-08 | 05-02 | snowmachine | ||
| Yukon River | Marshall | 05-16 | 1987 | 05-16 | 05-28 | 05-11 | 05-08 | snowmachine | ||
| Yukon River | Marshall | 05-12 | 1988 | 05-05 | 05-17 | 04-29 | 04-25 | snowmachine | ||
| Yukon River | Marshall | 05-15 | 1989 | 05-15 | 05-24 | 05-10 | 05-07 | snowmachine | ||
| Yukon River | Marshall | 05-11 | 1990 | 05-11 | 05-18 | 05-06 | 05-02 | snowmachine | ||
| Yukon River | Marshall | 05-09 | 1991 | 05-09 | 05-19 | 05-02 | 04-28 | snowmachine | 05-19 | |
| Yukon River | Marshall | 05-27 | 1992 | 05-23 | ||||||
| Yukon River | Marshall | 05-11 | 1994 | |||||||
| Yukon River | Marshall | 05-08 | 1995 | |||||||
| Yukon River | Marshall | 05-14 | 1996 | |||||||
| Yukon River | Marshall | 05-12 | 1998 | |||||||
| Yukon River | Marshall | 05-20 | 1999 | |||||||
| Yukon River | Marshall | 05-16 | 2000 | |||||||
| Yukon River | Marshall | 05-23 | 2006 |