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 2004-2005 HYDROLOGIC REPORT
 Sections
Introduction
Los Angeles County
Flood Control and Water Conservation
Precipitation
Evaporation
Runoff
Reservoirs
Erosion Control
Water Conservation
Acknowledgments
Disclaimer
 Reservoir Contents
Yearly Summary 
Facilities
Location Map
RESERVOIRS
Yearly Reservoir Operation Summary
  
Season Inflow
Annual
(AF)		 Inflow Outflow
Annual
(AF)		 Peak Inflow
Max-Day
(CFS)		 Min-Day
(CFS)		 Date Q
(CFS)
1929-30 52 3 0 52 N.D.
1930-31 41 2 0 41 Apr 26 3
1931-32 690 54 0 688 Feb 09 86
1932-33 79 5 0 81 Jan 20 12
1933-34 448 93 0 448 Jan 01 227
1934-35 593 21 0 575 Apr 08 49
1935-36 360 12 0 370 Feb 11 72
1936-37 1879 51 0 1868 Feb 06 98
1937-38 3271 415 0 3192 Mar 02 1320
1938-39 280 4 0 288 Jan 05 26
1939-40 232 4 0 236 Jan 08 29
1940-41 2767 56 + 2748 Mar 04 88
1941-42 209 2 0 233 Mar 14 6
1942-43 3143 160 0 3110 Jan 23 595
1943-44 1087 109 + 1085 Feb 22 226
1944-45 734 19 0 729 Nov 11 47
1945-46 525 40 0 509 Dec 23 148
1946-47 492 16 0 512 Nov 20 56
1947-48 58 1 0 8 Apr 28 9.7
1948-49 94 1 0 113 Dec 17 3.3
1949-50 142 2 0 130 Feb 06 3.5
1950-51 27 2 + 14 Jan 11 4.8
1951-52 1626 73 0 1577 Jan 16 154
1952-53 120 1 + 68 Dec 01 4.8
1953-54 346 13 0 359 Jan 25 53
1954-55 87 1 + 5 Jan 18 2.4
1955-56 190 14 + 213 Jan 26 56
1956-57 76 1 + 27 Jan 13 1.8
1957-58 2104 97 0 2052 Apr 03 169
1958-59 160 6 + 133 Feb 16 26
1959-60 54 1 + 11 Apr 27 4.8
1960-61 187 18 0 1510 Nov 05 462
1961-62 1222 63 0 933 Dec 02 1130
1962-63 248 20 0 159 Feb 09 92
1963-64 165 3 0 300 Mar 22 30
1964-65 380 18 0 15 Apr 09 73
1965-66 2210 113 0 2013 Nov 22 489
1966-67 4787 292 0 4790 Dec 06 685
1967-68 771 15 0 681 Nov 19 56
1968-69 13251 1210 0 12995 Jan 25 1540
1969-70 728 15 0 610 Feb 28 91
1970-71 856 22 0 1100 Dec 21 38
1971-72 217 10 + Dec 27 11
1972-73 1386 100 + 1046 Feb 11 163
1973-74 860 43 0 1030 Jan 07 68
1974-75 379 4 0 211 Mar 06 7.8
1975-76 237 6 0 467 Mar 01 17
1976-77 171 3 0 20 Jan 03 14
1977-78 6182 232 0 6234 Mar 04 500
1978-79 R.I. N.D.
1979-80 R.I. N.D.
1980-81 349 5 0 364 Jan 29 29
1981-82 1018 50 0 923 Mar 17 53
1982-83 5562 240 0 5532 Mar 01 350
1983-84 703 8 0 704 Dec 25 16
1984-85 611 10 0 585 Dec 19 16
1985-86 886 20 0 865 Mar 16 26.3
1986-87 203 N.D. 0 196 Jan 04 N.D.
1987-88 342 7 0 324 Jan 17 17
1988-89 382 13 0 340 Feb 04 31
1989-90 112 3 0 90 Feb 17 8
1990-91 470 26 0 453 Mar 27 62
1991-92 1259 37 0 1243 Feb 12 121
1992-93 7102 322 0 7146 Jan 18 385
1993-94 369 3 0 300 Feb 07 4
1994-95 3839 73 0 3820 Jan 10 127
1995-96 1247 54 0 1215 Feb 20 96
1996-97 1127 7.6 0 1108 N.D.
1997-98 4703 213 0 4642 Feb 23 344
1998-99 N.D.
1999-00 718 8.4 0 241 Feb 23 72
2000-01 354 6.3 0 321 Feb 13 8.35
2001-02 9 0.5 0 27 Nov 24 3
2002-03 1780 52 0 566 Apr 19 168
2003-04 502 25 0 626 Feb 26 110
2004-05 8060 494 0 7350 Jan 09 935
N.D. Not determined
R.I. Records incomplete
+ Less than 0.05 Acre Feet or less than 0.05 CFS, but greater than 0
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