Annual Maximum Pool Elevation, Flood Control Storage Utilized, And Discharge Prompton Reservoir West Branch Lackawaxen River Water Maximum Pool Flood Control Maximum Year Date Elevation Storage utilized (1) Discharge Date (ft. N.G.V.D.) (acre-feet) (percent) (C.F.S) 1960 13 Sep 60 (2) 1128.00 840 2 1660 05 Apr 60 1961 26 Sep 61 1131.19 1900 4 1560 26 Feb 61 1962 01 Apr 62 1131.08 1854 4 1490 01 Apr 62 1963 27 Mar 63 1131.85 2177 5 1790 27 Mar 63 1964 10 Mar 64 1133.45 2849 6 2280 10 Mar 64 1965 09 Feb 65 1127.93 820 2 480 09 Feb 65 1966 25 Mar 66 1128.58 1002 2 686 25 Mar 66 1967 30 Mar 67 1130.40 1568 3 737 30 Mar 67 1968 11 Sep 68 1129.45 1302 3 659 11 Sep 68 1969 25 Mar 69 1131.30 1946 4 1060 25 Mar 69 1970 10 Apr 70 1130.80 1736 4 908 10 Apr 70 1971 17 Mar 71 1130.18 1476 3 760 17 Mar 71 1972 09 Nov 71 1133.02 2668 6 1520 09 Nov 71 1973 29 Jun 73 1138.90 4704 10 2730 29 Jun 73 1974 05 Apr 74 1131.56 2055 4 800 05 Apr 74 1975 31 Oct 74 1132.80 2576 6 1930 31 Oct 74 1976 18 Oct 75 1131.40 1988 4 1620 19 Oct 75 1977 14 Mar 77 1133.04 2677 6 1960 14 Mar 77 1978 28 Mar 78 1130.23 1497 3 1180 28 Mar 78 1979 05 Mar 79 1133.07 2689 6 1920 05 Mar 79 1980 22 Mar 80 1129.48 1254 3 595 22 Mar 80 1981 21 Feb 81 1128.62 1014 2 340 21 Feb 81 1982 04 Apr 82 1128.56 999 2 350 04 Apr 82 1983 17 Apr 83 1130.28 1518 3 1200 17 Apr 83 1984 13 Dec 83 1129.11 1151 2 480 13 Dec 83 1985 28 Sep 85 1128.52 986 2 354 28 Sep 85 1986 17 Nov 85 1128.43 960 2 340 17 Nov 85 1987 09 Sep 87 1129.87 1364 3 680 09 Sep 87 1988 20 May 88 1128.94 1103 2 472 20 May 88 1989 07 May 89 1131.83 2170 4 1580 06 May 89 1990 20 Oct 89 1128.53 988 2 778 21 Oct 89 1991 31 Dec 90 1132.06 2260 5 1520 31 Dec 90 1992 01 Jun 92 1129.27 1194 2 997 01 Jun 92 1993 01 Apr 93 1131.82 2160 4 1990 01 Apr 93 1994 14 Apr 94 1130.82 1890 4 1511 14 Apr 94 1995 28 Nov 94 1127.75 739 2 504 29 Nov 94 1996 20 Jan 96 1134.59 3260 6 2413 20 Jan 96 1997 09 Nov 96 1130.44 1685 3 1476 09 Nov 96 1998 09 Jan 98 1129.71 1364 2 1093 09 Jan 98 1999 24 Jan 99 1129.13 1156 2 940 24 Jan 99 2000 28 Feb 00 1129.37 1395 2 1230 28 Feb 00 2001 10 Apr 01 1129.96 1594 3 1190 17 Dec 00 2002 29 Apr 02 1128.43 1082 2 1474 14 May 02 2003 04 Sep 03 1131.88 2263 5 2073 04 Sep 03 2004 18 Sep 04 1138.01 5009 10 2560 18 Sep 04 2005 3 Apr 05 1140.87 5795 12 2580 3 Apr 05 2006 28 Jun 06 1156.41 13407 27 3540 28 Jun 06 2007 17 Nov 06 1131.17 2012 4 1520 17 Nov 06 2008 5 Mar 08 1130.17 1666 3 1423 5 Mar 08 Notes: (1) Flood Control Storage allocation is 48,500 acre-ft (2) Initial Pool Filling (3) To convert from NGVD to NAVD subtract 0.63 feet. (4) After the 1985 Sediment Survey, the elevation-storage table was adjusted. Storage at normal pool changed from 3500 to 3355 acre-feet.