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 Year	Susquehanna	Section A	Section A-B, (incr.)	Section B	Potomac	Section B-C (incr.)	Section C
2020	37267	38942	6525	45467	15683	12758	58233
2019	62292	64950	8817	73767	10425	27675	101433
2018	55758	58183	8108	66292	10975	24283	90575
2017	40175	42083	6667	48750	11167	12100	60850
2016	28333	29867	5533	35392	8950	14983	50375
2015	30633	32267	5783	38050	8758	11850	49900
2014	36367	38192	6292	44483	16342	17858	62342
2013	34817	36583	6217	42800	8633	15717	58517
2012	40458	42383	6667	49050	11167	14467	63517
2011	67408	70442	9408	79850	10892	17825	97675
2010	34383	36108	6075	42183	6892	17008	59200
2009	32025	33700	5942	39642	9792	12233	51875
2008	42333	44342	6825	51167	16425	14033	65200
2007	38308	40200	6383	46583	10733	14108	60700
2006	43117	45125	7008	52133	16092	12225	64358
2005	43400	45408	6875	52275	14158	16200	68475
2004	60367	62892	8633	71525	13675	23000	94525
2003	51192	53433	7825	61258	5650	28658	89917
2002	27408	28917	5300	34217	13108	6275	40492
2001	25650	27125	5225	32350	9225	10942	43283
2000	37358	39208	6417	45625	9717	11725	57350
1999	23525	24900	4875	29767	12792	7633	37408
1998	47300	49408	7317	56708	5800	25308	82017
1997	42633	44583	6892	51475	12233	18833	70308
1996	51775	54108	7808	61917	11942	29758	91675
1995	27067	28567	5367	33933	10992	11317	45250
1994	52750	55208	8050	63258	8583	23125	86383
1993	48767	51183	7817	59000	9658	21175	80175
1992	27975	29533	5550	35083	9050	10875	45958
1991	40667	42542	6525	49075	5958	15892	64958
1990	35608	37392	6317	43708	10450	12383	56092
1989	35792	37600	6267	43858	10442	14508	58367
1988	27933	29492	5492	34983	5325	13125	48108
1987	34600	36350	6167	42508	11008	15067	57575
1986	38458	40358	6483	46842	14200	15808	62650
1985	25408	26867	5208	32067	19092	11450	43517
1984	50758	53042	7658	60700	17642	23225	83925
1983	34508	36283	6067	42350	12000	16033	58383
1982	36642	38458	6308	44767	14550	14308	59075
1981	26550	28050	5242	33292	10492	9183	42475
1980	35458	37225	6183	43408	11058	20242	63650
1979	42775	44883	6908	51792	16542	20792	72583
1978	58592	61075	8325	69400	16725	20617	90017
1977	41833	43867	6858	50725	16225	13967	64692
1976	43825	45900	7042	52942	6933	13508	66450
1975	46708	48817	7267	56083	11258	18342	74425
1974	43267	45292	6992	52283	12850	15325	67608
1973	48042	50200	7367	57567	18867	21975	79542
1972	59908	62533	8775	71308	8767	23608	94917
1971	40433	42358	6675	49033	12633	17925	66958
1970	37358	39283	6358	45642	11908	14058	59700
1969	27042	28567	5433	34000	10267	7250	41250
1968	34567	36300	6167	42458	11408	13458	55925
1967	31650	33325	5817	39142	9500	13442	52575
1966	26050	27500	5142	32650	12592	7892	40533
1965	19267	20458	4358	24825	8333	11592	36417
1964	31833	33433	5608	39058	17425	12317	51367
1963	27658	29192	5433	34633	18942	10958	45583
1962	27317	28783	5258	34033	8667	13850	47892
1961	35333	37092	6183	43267	24392	14958	58225
1960	46983	49142	7358	56500	15058	15575	72075
1959	29000	30558	5533	36092	20900	7758	43850
1958	40133	42133	6642	48775	5725	16158	64933
1957	34700	36442	6042	42483	8950	12525	55000
1956	45250	47375	7142	54517	8350	11933	66450
1955	30242	31867	5750	37608	4650	16667	54275
1954	26533	27992	5175	33158	23458	7558	40708
1953	38858	40675	6375	47058	18492	17217	64275
1952	43592	45617	6900	52525	12733	17708	70225
1951	49533	51742	7492	59242	9375	20108	79342
1950	38725	40592	6483	47075	11075	13825	60900
1949	32575	34242	5858	40100	11017	20625	60725
1948	36617	38467	6192	44658	9467	12667	57325
1947	38108	39975	6475	46450	13617	9183	55633
1946	45925	48025	7225	55250	14358	14033	69283
1945	41783	43825	6958	50783	11267	14400	65183
1944	32150	33800	5825	39625	12275	11117	50733
1943	47483	49617	7242	56858	14208	20333	77192
1942	31133	32758	5733	38492	9117	11375	49867
1941	25817	27308	5217	32525	11783	11683	44217
1940	34900	36817	6350	43167	9333	14283	57450
1939	31858	33492	5667	39167	19800	13992	53150
1938	35267	37050	6217	43267	22775	13467	56733
1937	40258	42167	6792	48958	9917	19583	68542