Annual Maximum Pool Elevation, Flood Control Storage Utilized and Discharge Francis E. Walter Reservoir Lehigh River Water Maximum Pool Flood Control Storage Maximum Discharge(2) Year(1) Elevation Utilized Date (Feet NGVD) (Acre-Feet) % of Total (cfs) Date ==== =================== ====================== ============== 1961 27 Feb 1350.67 10,003 9% 4110 01 Mar 1962 02 Apr 1334.25 5,206 5% 3540 03 Apr 1963 30 Mar 1367.94 17,894 17% 7070 31 Mar 1964 11 Mar 1360.07 13,834 13% 4680 12 Mar 1965 29 Nov 1352.03 10,516 10% 1660 11 Feb 1966 30 May 1391.72 34,433 32% 3510 21 Dec 1967 07 Aug 1367.56 17,682 16% 2820 30 Mar 1968 12 Sep 1319.60 2,340 2% 2840 18 Mar 1969 05 Aug 1373.30 21,097 20% 3350 26 Mar 1970 05 Apr 1366.85 17,288 16% 4410 07 Apr 1971 16 Feb 1329.55 4,161 4% 3120 17 Mar 1972 26 Jun 1398.20 40,003 37% 4010 01 Jun 1973 03 Jul 1397.60 39,469 37% 4760 04 Jul 1974 09 Dec 1351.40 10,139 9% 4740 24 Dec 1975 26 Feb 1362.70 15,128 14% 4290 10 Dec 1976 29 Jan 1377.80 24,020 22% 4390 31 Jan 1977 20 Oct 1360.06 13,830 13% 3750 14 Oct 1978 29 Mar 1371.77 20,133 19% 6180 30 Mar 1979 26 Jan 1366.82 17,271 16% 5270 27 Jan 1980 23 Mar 1365.58 16,582 15% 4750 24 Mar 1981 19 May 1397.27 39,175 36% 4590 24 Feb 1982 19 Apr 1381.96 26,926 25% 3280 20 Apr 1983 17 Apr 1389.14 32,339 30% 8230 13 Apr 1984 07 Apr 1396.70 38,668 36% 8050 09 Apr 1985 28 Sep 1417.10 59,301 55% 8390 29 Sep 1986 01 Oct 1397.20 39,113 36% 6040 18 Mar 1987 06 Apr 1382.60 27,390 25% 6870 15 Sep 1988 22 May 1344.89 8,068 7% 4230 22 May 1989 07 May 1375.93 22,768 21% 7440 08 May 1990 18 May 1340.27 6,728 6% 3800 18 May 1991 05 Dec 1339.76 6,589 6% 3970 05 Dec 1992 25 Nov 1343.83 7,761 7% 3450 02 Jun 1993 03 Apr 1379.58 25,222 23% 8400 04 Apr 1994 29 Aug 1388.45 31,804 29% 8580 30 Nov 1995 02 Oct 1355.95 12,048 11% 4162 16 Jan 1996 21 Jan 1397.73 39,651 37% 11452 29 Jan 1997 10 Nov 1366.25 16,955 16% 9800 10 Nov 1998 16 Jun 1332.13 4,729 4% 4863 10 Mar 1999 24 Sep 1383.35(3) 27,934 26% 5990 25 Jan 2000 01 Oct 1378.37(3) 24,405 23% 3560 28 Feb 2001 18 Dec 1349.77 9,674 9% 4041 18 Dec 2002 29 May 1399.23(3) 40,920 38% 8242 29 May 2003 23 Jun 1383.37 27,947 26% 7095 26 Jun 2004 19 Sep 1401.38 42,924 39% 7445 13 Dec 2005 4 Apr 1407.88(3) 50,327 46% 8140 6 Apr 2006 29 Jun 1441.73(3) 91,830 85% 9820 8 Jul 2007 18 Apr 1382.29 27,165 25% 4030 20 Nov 2008 09 Mar 1391.68 34,399 32% 6990 10 Mar Notes: (1) A water year is from October 1 through September 30 of the next calendar year. Example: Water year 1998 is from October 1, 1997 through September 30, 1998. (2) Maximum discharge from 1961-1993 are daily mean values. Maximum discharge after water year 1993 are instantaneous peak values. (3) Impacted by storage prior to event (4) To convert from NGVD to NAVD subtract 0.62 feet.