Chesapeake Bay Period-of-Record Annual Mean Streamflow By Cross Section: Susquehanna River and Potomac River

This table contains historic Chesapeake Bay annual mean streamflow values for the Susquehanna River and the Potomac River calculated using documented methods. Annual mean streamflow values for the Susquehanna and Potomac Rivers are calculated directly from USGS gaging-station data. Sections A and B provide cumulative streamflow values for flow entering the bay at each of these defined cross sections (see Bue, 1968). Section B-C provides incremental streamflow values for flow entering the bay between two defined cross sections.
´╗┐Water YearSusquehannaSection ASection A-B, (incr.)Section BPotomacSection B-C (incr.)Section C
2021 37,972 39,886 6,525 46,411 11,567 14,704 61,114
2020 37,258 38,932 6,526 45,458 9,899 12,761 58,219
2019 62,294 64,954 8,813 73,767 22,780 27,670 101,437
2018 55,758 58,183 8,108 66,292 19,787 24,287 90,578
2017 40,174 42,083 6,667 48,750 9,323 12,101 60,851
2016 28,327 29,863 5,530 35,393 11,770 14,973 50,366
2015 30,629 32,265 5,785 38,050 9,110 11,846 49,896
2014 36,366 38,193 6,291 44,483 14,201 17,860 62,343
2013 34,817 36,583 6,217 42,800 12,276 15,719 58,519
2012 40,461 42,380 6,670 49,050 11,254 14,473 63,523
2011 67,408 70,442 9,408 79,850 14,353 17,833 97,683
2010 34,379 36,113 6,073 42,185 13,613 17,014 59,199
2009 32,026 33,702 5,940 39,642 9,477 12,228 51,870
2008 42,335 44,345 6,822 51,167 11,024 14,039 65,206
2007 38,301 40,203 6,383 46,587 11,075 14,113 60,700
2006 43,117 45,125 7,008 52,133 9,368 12,220 64,353
2005 43,399 45,408 6,869 52,278 12,738 16,201 68,478
2004 60,367 62,892 8,633 71,525 18,490 23,001 94,526
2003 51,192 53,433 7,825 61,258 23,460 28,662 89,920
2002 27,410 28,913 5,303 34,217 4,649 6,274 40,491
2001 25,649 27,122 5,224 32,346 8,353 10,937 43,283
2000 37,358 39,208 6,417 45,625 8,945 11,718 57,343
1999 23,526 24,893 4,871 29,764 5,724 7,625 37,389
1998 47,301 49,399 7,312 56,711 20,899 25,308 82,019
1997 42,625 44,587 6,888 51,475 15,051 18,833 70,308
1996 51,775 54,108 7,808 61,917 24,393 29,758 91,674
1995 27,070 28,565 5,367 33,932 8,653 11,321 45,253
1994 52,750 55,208 8,050 63,258 18,938 23,123 86,381
1993 48,768 51,180 7,820 59,000 17,417 21,176 80,176
1992 27,977 29,536 5,548 35,083 8,322 10,879 45,963
1991 40,669 42,539 6,531 49,070 12,590 15,892 64,962
1990 35,608 37,392 6,317 43,708 9,487 12,383 56,092
1989 35,795 37,593 6,265 43,858 11,403 14,504 58,363
1988 27,939 29,492 5,492 34,983 10,263 13,115 48,098
1987 34,596 36,346 6,163 42,508 11,908 15,058 57,566
1986 38,455 40,358 6,483 46,842 12,623 15,813 62,655
1985 25,406 26,863 5,204 32,067 8,759 11,450 43,517
1984 50,763 53,043 7,657 60,700 18,874 23,218 83,918
1983 34,508 36,282 6,063 42,345 12,843 16,027 58,372
1982 36,639 38,456 6,310 44,766 11,252 14,308 59,074
1981 26,551 28,046 5,246 33,292 6,938 9,191 42,483
1980 35,462 37,226 6,185 43,411 16,218 20,239 63,650
1979 42,775 44,883 6,908 51,792 16,719 20,793 72,584
1978 58,592 61,075 8,325 69,400 16,543 20,613 90,013
1977 41,833 43,867 6,858 50,725 11,048 13,974 64,699
1976 43,825 45,900 7,042 52,942 10,486 13,510 66,452
1975 46,711 48,817 7,267 56,083 14,558 18,339 74,423
1974 43,267 45,292 6,992 52,283 11,993 15,322 67,605
1973 48,043 50,198 7,368 57,567 17,638 21,968 79,535
1972 59,909 62,532 8,777 71,308 19,083 23,613 94,922
1971 40,432 42,362 6,672 49,033 14,194 17,923 66,956
1970 37,350 39,280 6,360 45,640 11,014 14,063 59,703
1969 27,043 28,572 5,428 34,000 5,322 7,243 41,243
1968 34,565 36,298 6,164 42,462 10,442 13,451 55,913
1967 31,648 33,321 5,819 39,140 10,447 13,427 52,567
1966 26,056 27,508 5,142 32,649 5,967 7,888 40,538
1965 19,264 20,457 4,365 24,822 9,046 11,593 36,415
1964 31,828 33,434 5,618 39,052 9,655 12,314 51,366
1963 27,660 29,194 5,438 34,633 8,569 10,943 45,575
1962 27,315 28,781 5,261 34,042 10,981 13,851 47,893
1961 35,327 37,084 6,183 43,267 11,938 14,955 58,222
1960 46,983 49,142 7,358 56,500 12,228 15,578 72,078
1959 28,999 30,562 5,529 36,091 5,788 7,755 43,846
1958 40,133 42,136 6,640 48,776 12,786 16,155 64,931
1957 34,696 36,433 6,048 42,480 9,715 12,527 55,007
1956 45,250 47,375 7,142 54,517 9,213 11,923 66,439
1955 30,243 31,866 5,744 37,610 13,114 16,659 54,269
1954 26,526 27,984 5,168 33,153 5,663 7,567 40,719
1953 38,854 40,682 6,375 47,057 13,677 17,213 64,270
1952 43,596 45,619 6,902 52,521 14,149 17,706 70,227
1951 49,536 51,744 7,493 59,238 16,094 20,108 79,346
1950 38,724 40,592 6,483 47,075 10,738 13,817 60,892
1949 32,574 34,239 5,861 40,100 16,418 20,622 60,722
1948 36,611 38,466 6,189 44,655 9,784 12,658 57,313
1947 38,108 39,975 6,475 46,450 6,889 9,177 55,627
1946 45,923 48,023 7,228 55,250 10,874 14,032 69,282
1945 41,784 43,825 6,958 50,783 11,163 14,397 65,180
1944 32,150 33,798 5,825 39,623 8,635 11,113 50,736
1943 47,487 49,613 7,243 56,856 16,341 20,328 77,183
1942 31,128 32,764 5,728 38,493 8,748 11,374 49,867
1941 25,822 27,305 5,222 32,527 8,940 11,685 44,212
1940 34,893 36,822 6,347 43,168 11,158 14,279 57,448
1939 31,860 33,493 5,671 39,164 10,980 13,980 53,144
1938 35,267 37,050 6,217 43,267 10,413 13,463 56,730
1937 40,254 42,167 6,792 48,958 15,686 19,578 68,536