Underground Natural Gas storage - Salt Cavern storage fields, 1997-2003

Natural Gas Monthly, May, 2003

Table 11

Underground Natural Gas Storage - Salt Cavern Storage Fields, 1997-2003

(Volumes in Billion Cubic Feet)

                         Natural Gas in Salt Cavern
                           Underground Storage
                            at End of Period
Year and
Month               Base Gas       Working Gas   Total

1997 Total (a)         --               --        --
1998 Total (a)         --               --        --
1999 Total (a)         --               --        --
2000 Total (a)         --               --        --

2001
  January              71               73        144
  February             69               87        136
  March                69               53        122
  April                69               71        140
  May                  71               85        156
  June                 71               85        155
  July                 71               89        160
  August               71               86        157
  September            71              100        171
  October              71              108        180
  November             77              123        200
  December             77              115        191

Total                  --               --        --

2002
  January              77               93        170
  February             77               74        151
  March                77               65        142
  April                77               77        154
  May                  77               93        171
  June                 77              104        181
  July                 80               91        171
  August               80               96        176
  September            81              102        184
  October              82              108        190
  November             75              106        181
  December             75              102        177

Total                  --               --        --

2003
  January              76               56        133
  February             76               38        114
  March                75              57'        132

                    Change in Working Gas            Storage Activity
                       from Same Period
                         Previous Year
Year and
Month               Volume            Percent  Injections  Withdrawals

1997 Total (a)        --                   --     267              274
1998 Total (a)        --                   --     297              275
1999 Total (a)        --                   --     260              259
2000 Total (a)        --                   --     296              320

2001
  January              9                 13.5      32               30
  February             1                  1.1      19               24
  March               -16               -23.6      20               35
  April               -3                 -4.4      32               15
  May                  8                 10.4      30               14
  June                -5                 -5.1      26               26
  July                -8                 -8.4      30               27
  August              -2                 -2.7      29               30
  September            0                 -0.3      35               19
  October              1                  0.8      35               25
  November            13                 11.6      35               21
  December            43                 59.4      19               28

Total                 --                   --     341              294

2002
  January             19                 26.2      24               46
  February             7                 10.9      20               38
  March               12                 22.3      27               36
  April                6                  8.1      29               17
  May                  8                  9.7      35               19
  June                19                 22.2      32               21
  July                 2                  2.7      29               36
  August              10                 11.3      32               27
  September            2                  2.2      34               27
  October              0                  0.1      38               31
  November            -18               -14.3      29               28
  December            -13               -10.9      30               35

Total                 --                   --     359              361

2003
  January             -36               -39.1      21               65
  February            -37               -49.3      25               42
  March               -8                -11.7      39               21

                   Storage
                  Activity


Year and                Net
Month           Withdrawals

1997 Total (a)            6
1998 Total (a)          -22
1999 Total (a)           -1
2000 Total (a)           24

2001
  January                -2
  February                5
  March                  15
  April                 -17
  May                   -15
  June                    0
  July                   -3
  August                  1
  September             -16
  October               -10
  November              -14
  December                9

Total                   -47

2002
  January                22
  February               18
  March                   9
  April                 -12
  May                   -16
  June                  -10
  July                    7
  August                 -5
  September              -7
  October                -7
  November                0
  December                4

Total                     1

2003
  January                43
  February               18
  March                 -18

(a) Total as of December 31.

-- Not Applicable.

Notes: Data for 1997 through are final. All other data are preliminary
unless otherwise noted. See Explanatory Note 6 for discussion of the
reporting of underground storage information. Gas in storage at the end
of a reporting period may not equal the quantity derived by adding or
subtracting net injections or withdrawals during the period to the
quantity of gas in storage at the beginning of the period. This is due
to changes in the quantities of native gas included in base gas and/or
losses in base gas due to migration from storage reservoirs. Totals may
not equal sum of components because of independent rounding. Geographic
coverage is the 50 states and the District of Columbia. Positive net
withdrawals indicate the volume of withdrawals in excess of injections.
Negative net withrawals indicate the volume of injections in excess of
withdrawals.

Sources: Form EIA-191, "Monthly Underground Gas Storage Report," and
Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and