USGS Clark Fork at St Regis
Year	Avg Annual (AF)		Year	Avg Annual (AF)		Year	Avg Annual (AF)
1911	No Data		1941	2,777,390		1971	7,021,331
1912	6,655,491		1942	4,516,954		1972	7,943,683
1913	7,578,961		1943	7,265,555		1973	2,926,311
1914	5,319,918		1944	3,097,324		1974	7,337,518
1915	4,093,403		1945	3,859,440		1975	7,436,781
1916	8,389,799		1946	4,790,032		1976	7,602,564
1917	8,174,456		1947	6,659,560		1977	2,603,383
1918	7,547,604		1948	7,774,708		1978	5,985,574
1919	3,668,233		1949	5,496,229		1979	4,623,258
1920	5,578,513		1950	7,056,968		1980	5,616,141
10 year avg (AF)	6,334,042		10 year avg (AF)	5,329,416		10 year avg (AF)	5,909,654
1921	6,084,776		1951	7,155,762		1981	5,527,140
1922	5,724,384		1952	5,384,624		1982	7,167,604
1923	Incomplete Data		1953	5,171,966		1983	4,687,313
1924	Incomplete Data		1954	6,064,972		1984	5,242,100
1925	Incomplete Data		1955	5,405,853		1985	4,218,348
1926	Incomplete Data		45 Year Avg (AF)	4,909,563		1986	5,140,628
1927	Incomplete Data		1956	7,137,866		1987	2,802,379
1928	Incomplete Data		1957	5,252,762		1988	2,994,966
1929	3,599,551		1958	5,460,420		1989	4,601,100
1930	3,978,612		1959	7,144,280		1990	4,786,143
10 year avg (AF)	4,846,831		1960	4,879,722		10 year avg (AF)	4,716,772
1931	2,419,619		10 year avg (AF)	5,905,823		1991	4,712,818
1932	4,464,179		1961	4,625,557		1992	2,918,415
1933	6,214,604		1962	5,735,058		1993	4,104,350
1934	5,997,931		1963	4,838,865		1994	3,149,533
1935	3,743,974		1964	6,258,752		1995	5,133,148
1936	4,130,504		1965	7,644,736		1996	7,419,561
1937	2,627,244		1966	4,088,397		1997	8,472,677
1938	5,004,927		1967	6,135,278		1998	4,861,397
1939	3,771,906		1968	5,408,077		1999	5,522,964
1940	3,033,309		1969	6,006,449		2000	3,722,095
10 year avg (AF)	4,140,820		1970	5,625,382		10 year avg (AF)	5,951,987
			10 year avg (AF)	5,636,655		45 year avg (AF)	5,882,038
						90 year avg (AF)	5,395,801