SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, DC 20549

                               _______________

                                  FORM 8-K


                               CURRENT REPORT
                   PURSUANT TO SECTION 13 OR 15(d) OF THE
                       SECURITIES EXCHANGE ACT OF 1934




   Date of Report (Date of earliest event reported)  April 2, 2001


                              NISOURCE INC.
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        (Exact Name of Registrant as Specified in Its Charter)



         Delaware             001-16189                35-2108964
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   (State or Other      (Commission File Number)     (IRS Employer
   Jurisdiction of                                  Identification No.)
   Incorporation)



   801 E. 86TH AVENUE, MERRILLVILLE, INDIANA              46410
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   (Address of Principal Executive Offices)            (Zip Code)


   Registrant's telephone number, including area code     (877) 647-5990
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   (Former Name or Former Address, If Changed Since Last Report)

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   Item 7.   Financial Statements, Pro Forma Financial Information and
             Exhibits.
             ---------------------------------------------------------

   Pro Forma Financial Information.

        The following Pro Forma Financial Information is included in
   Exhibit 99.1 to this Report and is incorporated herein by reference:
   (1) Unaudited Pro Forma Combined Condensed Statement of Income from
   Continuing Operations for the twelve months ended December 31, 2000
   and (2) Notes to Unaudited Pro Forma Combined Condensed Statement of
   Income.


   The following exhibit is filed herewith:

   99.1      Pro Forma Financial Information.





                                  SIGNATURE


        Pursuant to the requirements of the Securities Exchange Act of
   1934, the Registrant has duly caused this report to be signed on its
   behalf by the undersigned hereunto duly authorized.


                                 NISOURCE INC.
                                 (Registrant)



   Dated: April 2, 2001          By:  /s/ Jeffrey Grossman
                                 ---------------------------------------
                                 Name:   Jeffrey Grossman
                                 Title:  Vice President and Controller





                                EXHIBIT INDEX




   EXHIBIT NUMBER      DESCRIPTION
   --------------      -----------

        99.1           Pro Forma Financial Information.

             Unaudited Pro Forma Financial Information. The following
   unaudited pro forma information reflects the historical combined
   condensed statement of income for continuing operations of NiSource
   Inc. and Columbia Energy Group after accounting for the acquisition of
   Columbia by NiSource as a purchase business combination.  The
   unaudited pro forma combined condensed statement of income from
   continuing operations assumes the acquisition was completed on January
   1, 2000.  The information presented below is not necessarily
   indicative of the results of operations that would have occurred had
   the acquisition actually been completed on such date. The information
   is also not necessarily indicative of the future results of operations
   of NiSource. The pro forma statements and notes should be read in
   conjunction with the historical consolidated financial statements and
   related notes of NiSource and Columbia.