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Table 1. Historic Harvest Data
(all species of mussels harvested combined)
Year Tons Harvested   Year Tons Harvested   Year Tons Harvested
1894
97.75
  1936
64.25
  1979
91.75
1899
8000.00
  1937
96.22
  1982
177.95
1914
8539.00
  1938
133.22
  1983
28.83
1920
933.29
  1939
74.33
  1984
131.25
1921
521.95
  1940
148.37
  1985
583.71
1922
501.18
  1941
112.98
  1986
387.40
1923
712.47
  1942
182.93
  1987
1016.96
1924
582.83
  1948
14.34
  1988
852.44
1925
572.34
  1949
7.10
  1989
934.09
1926
1029.31
  1950
9.87
  1990
1194.26
1927
444.49
  1964
87.00
  1991
614.26
1928
1211.45
  1965
500.00
   
1929
510.24
  1966
690.00
   
1930
741.34
  1967
124.00
   
1931
429.17
  1975
72.51
   
1932
149.59
  1976
264.78
   
1934
217.63
  1977
306.00
   
1935
162.17
  1978
124.00
   
*Data in these tables were obtained from the Iowa DNR.
Note: Years on harvest and price data may not always match up.

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Last updated on October 16, 2003
http://www.fws.gov/midwest/mussel/market_mystery_table1.html