Table B-4.   Historic levels (in ft, relative) in Morena reservoir at the beginning of the month.1

Year	JUL	AUG	SEP	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	Mean
1911-12	65.60	65.50	65.00	64.50	64.60	65.50	65.50	48.10	50.50	69.00	80.70	83.00	65.63
1912-13	83.40	83.50	83.40	83.00	83.60	83.70	84.00	85.40	87.10	85.35	59.75	56.80	79.92
1913-14	57.63	57.40	59.10	60.52	61.33	62.84	64.49	72.62	82.67	84.68	84.22	84.70	69.35
1914-15	84.48	83.92	83.29	82.90	82.90	82.98	83.94	90.05	104.36	110.73	113.38	119.93	93.57
1915-16	120.26	119.81	119.14	118.59	118.10	118.04	118.68	148.50	145.15	145.12	144.95	146.08	130.20
1916-17	146.49	146.25	145.33	144.44	144.36	144.09	143.68	145.65	145.89	147.12	148.17	148.29	145.81
1917-18	147.50	146.22	144.55	142.98	141.40	140.40	139.45	139.01	139.13	144.18	144.10	143.03	142.66
1918-19	141.77	140.10	138.80	136.94	135.62	134.79	134.77	134.68	135.53	136.42	135.95	134.57	136.66
1919-20	132.47	130.51	128.28	126.67	126.26	126.16	124.45	123.40	126.70	131.94	134.52	135.02	128.87
1920-21	133.80	131.67	129.78	127.87	126.26	124.84	124.29	124.51	123.88	123.22	121.98	121.74	126.15
1921-22	120.00	118.20	115.72	113.37	111.38	108.76	120.82	125.99	136.65	145.07	147.62	148.02	125.97
1922-23	148.01	146.83	145.22	143.08	137.21	133.55	133.98	134.52	136.26	137.73	138.87	138.64	139.49
1923-24	138.26	138.03	137.51	137.20	136.92	136.80	137.07	137.18	137.09	138.10	138.74	138.28	137.60
1924-25	137.57	136.86	136.14	135.45	135.04	134.70	135.11	135.08	135.15	135.24	135.49	135.03	135.57
1925-26	134.68	133.91	133.19	132.58	132.63	132.51	132.44	132.54	133.01	132.91	135.59	135.26	133.44
1926-27	134.62	133.87	133.22	132.58	132.07	131.82	132.97	133.22	155.34	155.35	155.35	155.74	140.51
1927-28	155.49	154.46	154.22	153.73	153.57	153.69	154.69	154.96	155.08	155.01	154.75	154.35	154.50
1928-29	153.61	152.83	152.10	151.42	150.93	150.59	150.72	151.02	151.48	151.89	150.93	148.70	151.35
1929-30	146.31	144.15	142.58	141.07	140.33	139.83	139.62	140.71	140.81	141.32	141.20	141.87	141.65
1930-31	141.32	140.78	140.16	139.60	139.14	139.10	138.82	139.02	139.76	139.52	139.41	138.92	139.63
1931-32	138.28	137.60	134.14	130.28	128.78	128.91	129.69	130.21	139.08	141.05	141.72	141.74	135.12
1932-33	141.45	140.72	139.99	139.35	138.90	138.57	139.28	140.48	140.93	141.03	141.29	141.39	140.28
1933-34	140.86	140.10	139.40	138.80	138.35	138.00	138.07	137.99	138.23	138.01	137.57	136.89	138.52
1934-35	136.39	135.68	135.16	134.56	134.20	133.96	133.90	134.26	135.20	136.21	131.71	131.59	134.40
1935-36	130.99	130.35	129.99	129.44	128.91	128.64	128.48	128.33	129.78	130.12	130.67	125.98	129.31
1936-37	119.98	112.78	109.81	109.43	109.42	109.04	111.00	114.02	138.05	145.96	150.09	151.61	123.43
1937-38	151.82	151.49	150.89	150.27	149.76	149.46	149.69	149.99	151.88	160.38	161.50	161.97	153.26
1938-39	161.66	161.20	160.52	159.85	159.32	158.78	159.65	160.47	161.62	162.02	162.09	161.70	160.74
1939-40	160.88	159.91	159.23	159.39	158.90	158.74	158.64	159.08	160.07	160.15	160.30	159.63	159.58
1940-41	158.82	157.91	156.98	156.34	155.97	154.92	157.07	157.35	158.72	163.00	162.84	162.60	158.54
1941-42	162.59	162.38	162.09	161.62	161.93	161.98	159.69	159.55	159.62	159.54	159.60	159.28	160.82
1942-43	158.70	157.91	157.02	156.26	155.70	155.34	155.33	157.35	157.78	159.44	159.58	159.14	157.46
1943-44	158.64	157.85	157.03	156.32	155.75	155.19	155.62	155.74	158.22	159.67	159.73	159.53	157.44
1944-45	158.98	158.17	157.22	156.39	155.71	156.26	156.00	155.83	156.02	158.26	158.91	158.58	157.19
1945-46	158.10	157.37	157.53	157.01	156.50	156.21	155.66	155.98	156.16	155.87	154.51	152.90	156.15
1946-47	152.32	152.02	151.41	150.98	150.66	151.18	151.49	151.53	151.59	151.16	150.42	149.56	151.19
1947-48	142.83	141.51	139.63	132.80	131.50	130.43	129.73	126.76	119.88	120.43	107.88	106.13	127.46
1948-49	104.15	100.05	91.80	68.22	69.01	69.27	70.28	74.20	78.80	82.25	72.52	73.13	79.47
1949-50	72.99	72.61	72.28	72.03	72.14	72.48	73.25	74.45	63.90	54.90	57.42	58.41	68.07
1950-51	58.39	57.95	57.28	57.13	57.50	58.36	59.06	60.58	61.32	61.96	62.74	62.75	59.59
1951-52	62.43	62.14	61.86	61.48	61.47	61.78	63.72	77.16	78.57	104.50	108.83	109.29	76.10
1952-53	108.53	101.43	100.78	100.25	99.80	100.03	100.45	100.98	101.29	102.09	102.38	102.15	101.68
1953-54	101.59	100.97	100.39	99.81	99.21	99.13	98.91	99.56	81.82	87.41	88.58	88.52	95.49
1954-55	88.14	87.75	87.20	86.73	86.45	86.51	86.59	87.40	87.60	87.70	87.70	87.50	87.27
1955-56	87.00	86.60	86.10	85.50	85.10	85.10	85.40	85.90	73.94	71.22	71.70	71.50	81.26
1956-57	70.80	70.10	69.40	68.70	68.40	68.00	68.00	69.70	70.10	70.40	70.40	70.50	69.54
1957-58	69.80	69.10	68.50	67.90	67.90	67.90	68.10	68.30	69.20	72.10	76.60	77.30	70.23
1958-59	76.90	76.20	75.60	75.10	74.60	74.90	74.90	75.20	76.60	76.60	76.40	76.00	75.75
1959-60	75.30	74.60	73.90	73.40	73.10	72.80	73.20	73.90	75.00	75.20	75.30	75.10	74.23
1960-61	74.50	73.80	73.00	72.60	72.10	72.20	72.20	72.30	72.30	72.40	72.10	71.50	72.58
1961-62	70.80	70.00	69.50	68.80	68.40	68.20	68.50	69.10	70.50	71.70	71.50	71.20	69.85
1962-63	70.70	69.90	69.20	68.60	68.10	67.90	67.80	67.70	68.20	68.40	68.40	67.80	68.56
1963-64	67.20	66.40	65.80	65.40	65.40	65.40	65.30	65.60	65.70	66.30	66.50	66.20	65.93
1964-65	65.60	64.80	64.10	63.50	63.10	63.10	63.30	63.40	63.80	64.00	65.70	65.20	64.13
1965-66	64.80	64.00	63.30	62.80	62.30	66.00	67.90	69.30	70.80	71.60	71.40	71.00	67.10
1966-67	70.40	69.60	68.85	68.30	67.80	67.80	78.60	79.10	79.20	79.40	80.20	80.00	74.10
1967-68	79.40	78.80	78.30	77.98	77.50	77.70	78.40	78.53	78.67	78.81	78.66	78.24	78.42
1968-69	77.62	77.03	76.35	75.73	75.33	75.18	75.41	81.55	96.68	97.72	100.30	100.95	84.15
1969-70	100.63	100.02	99.30	98.78	98.33	98.19	98.17	98.25	98.21	98.68	98.55	97.97	98.76
1970-71	97.37	96.63	96.05	95.38	94.94	94.78	95.50	95.50	95.59	95.57	95.33	95.12	95.65
1971-72	94.60	93.80	93.60	93.00	92.60	92.30	92.90	92.70	92.70	92.40	91.90	91.40	92.83
1972-73	91.10	89.90	89.30	88.80	88.70	88.90	89.30	89.50	90.30	96.50	97.40	97.10	91.40
1973-74	96.40	95.60	94.90	94.30	93.80	93.50	93.80	94.60	94.50	94.40	94.10	93.60	94.46
1974-75	92.80	92.20	91.30	90.90	90.70	90.54	90.60	90.52	90.72	91.40	91.70	91.20	91.22
1975-76	90.65	89.90	89.05	88.66	88.12	88.00	87.96	87.80	88.80	89.18	89.30	88.92	88.86
1976-77	88.20	87.58	86.88	86.79	86.30	86.06	85.82	86.34	86.34	86.30	86.01	85.99	86.55
1977-78	85.29	84.54	84.00	83.33	82.91	82.60	82.80	85.40	98.04	111.90	117.70	118.60	93.09
1978-79	118.10	117.50	116.40	116.00	115.55	116.00	117.80	120.50	125.60	134.60	138.40	139.60	123.00
1979-80	140.00	139.45	138.73	137.89	137.18	137.51	137.70	144.50	157.55	157.50	157.40	157.22	145.22
1980-81	157.12	157.14	156.84	156.41	155.96	155.82	156.16	156.53	157.05	157.08	157.05	156.40	156.63
1981-82	155.79	154.64	153.70	152.68	151.87	151.62	151.40	152.45	153.58	156.24	157.00	157.04	154.00
1982-83	156.49	155.56	154.84	154.67	153.50	153.52	156.40	157.32	157.60	157.64	157.50	157.30	156.03
1983-84	157.20	157.15	157.18	157.17	157.00	157.23	157.35	156.84	157.00	156.90	156.90	156.50	157.04
1984-85	155.60	155.34	154.85	154.13	153.73	153.62	154.25	154.50	154.90	155.22	155.10	154.55	154.65
1985-86	153.65	152.72	151.47	150.67	150.00	149.90	150.14	149.88	150.83	152.40	152.20	151.48	151.28
1986-87	150.46	149.32	148.32	147.45	146.84	146.37	146.20	146.16	146.15	146.66	146.38	145.77	147.17
1987-88	145.00	144.15	143.38	142.75	142.61	142.53	142.50	143.30	143.64	143.40	143.63	143.20	143.34
1988-89	142.45	141.62	140.90	140.17	139.55	138.95	137.63	136.00	135.69	132.04	127.30	121.71	136.17
1989-90	115.55	115.00	114.31	113.87	113.43	113.02	112.83	113.02	113.18	99.88	99.93	99.60	110.30
1990-91	99.08	98.40	97.72	97.28	96.85	96.60	96.69	96.74	81.08	92.15	97.84	97.77	95.68
1991-92	97.36	96.78	96.31	95.84	95.38	95.20	95.50	95.82	97.93	100.32	101.68	101.58	97.48
1992-93	100.74	100.10	99.58	99.04	98.60	98.21	98.40	132.68	147.24	153.94	156.15	156.69	120.11
1993-94	156.48	155.58	154.44	153.37	152.44	151.96	152.30	152.55	153.68	154.53	154.73	154.39	153.87
1994-95	153.59	152.40	151.62	150.66	149.60	149.10	148.84	151.58	154.23	157.26	157.24	157.20	152.78
1995-96	157.08	156.22	155.14	154.06	153.26	152.70	152.40	152.40	152.70	152.94	152.54	151.70	153.60
1996-97	150.52	149.58	148.26	147.34	146.52	146.18	145.84	146.40	146.48	146.18	145.70	144.96	147.00
1997-98	144.06	143.10	142.08	141.40	140.52	140.28	138.76	137.07	141.62	144.88	150.42	152.25	143.04
1998-99	152.51	151.87	151.04	150.05	149.30	149.12	149.12	149.22	149.27	149.28	149.52	149.11	149.95
1999-00	148.37	147.40	146.46	145.55	144.67	144.04	143.60	141.88	140.08	137.80	135.13	131.87	142.24
Mean	121.51	120.53	119.60	118.53	117.96	117.75	118.21	119.38	120.72	122.25	122.50	122.14	120.09

1  The first 5 yr were not included in the calculation of the mean due to the initial filling of the reservoir. The mean mean monthly level (120.09 ft) and the maximum mean monthly level (122.5 ft) (May) are shown in bold in the last line of the table.