UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549





                                   FORM U-9C-3

                                QUARTERLY REPORT


                    FOR THE QUARTER ENDED SEPTEMBER 30, 2001



   Filed Pursuant to Rule 58 of the Public Utility Holding Company Act of 1935



   This report is being submitted as a combined filing for NiSource Inc. and
                             Columbia Energy Group.



 Please direct all inquiries to Jeffrey Grossman, Vice President and Controller
                        of NiSource Inc. at 219-647-5675



                       NISOURCE INC./COLUMBIA ENERGY GROUP
                                801 E 86th Avenue
                             Merrillville, IN 46410

                                    CONTENTS



                                                                            Page
                                                                            ----
                                                                         
ITEM 1.  ORGANIZATION CHART...............................................    3

ITEM 2.  ISSUANCES AND RENEWALS OF SECURITIES AND CAPITAL CONTRIBUTIONS...    4

ITEM 3.  ASSOCIATE TRANSACTIONS...........................................    4

ITEM 4.  SUMMARY OF AGGREGATE INVESTMENT..................................    5

ITEM 5.  OTHER INVESTMENTS................................................    5

ITEM 6.  FINANCIAL STATEMENTS AND EXHIBITS................................    5

EXHIBITS..................................................................    5

SIGNATURE.................................................................    6

EXHIBIT A.................................................................    7



                                       2

ITEM 1.  ORGANIZATION CHART



                                                                                       PERCENTAGE
                                           ENERGY OR                                    OF VOTING
                                          GAS-RELATED      DATE OF        STATE OF     SECURITIES
NAME OF REPORTING COMPANY                   COMPANY      ORGANIZATION   ORGANIZATION      HELD             NATURE OF BUSINESS
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                       
Columbia Deep Water Services              Gas-related      01/07/98       Delaware        100%        (Non-FERC
Company (Deep Water)                                                                                  jurisdictional gas
                                                                                                      pipeline development

Columbia Pipeline Corp. (CPC)             Gas-related      10/30/98       Delaware        100%        Holding company for
                                                                                                      (non-FERC jurisdictional gas
                                                                                                      pipeline companies

Natural Gas Development                   Gas-related      10/22/96     Massachusetts     100%        Interstate pipeline

PNGTS Holding Corporation                 Gas-related      02/27/98     Massachusetts     100%        Interstate pipeline

Granite State Gas Transmission            Gas-related      10/24/55     New Hampshire     100%        Interstate pipeline

Customer Information Services, Inc.      Energy-related    11/14/90        Indiana        100%        Customer Information

EnergyUSA-TPC Corporation                Energy-related    08/10/00       Delaware        100%        Gas marketing

KGF Trading Company                      Energy-related    07/31/92        Indiana        100%        Marketing company

NiSource Pipeline Group, Inc.             Gas-related      05/24/99        Indiana        100%        Holding company

Crossroads Pipeline Company               Gas-related      04/05/93        Indiana        100%        Interstate gas pipeline

NI Energy Services Transportation, Inc.   Gas-related      06/18/98        Indiana        100%        Interstate gas pipeline

NI-TEX Gas Services, Inc.                 Gas-related      03/30/87       Delaware        100%        Gas storage

NI-TEX, Inc.                              Gas-related      08/26/88        Indiana        100%        Intrastate gas pipeline

NiSource Energy Technologies, Inc.       Energy-related    10/27/00        Indiana        100%        Development of fuel
                                                                                                      cell technology

EnergyUSA Appalachian Corporation        Energy-related    02/19/01        Indiana        100%        Gas Marketing



                                       3

ITEM 2.  ISSUANCES AND RENEWALS OF SECURITIES AND CAPITAL CONTRIBUTIONS

SECURITIES:



Company       Type of        Principal                                    Person to        Collateral      Consideration
Issuing      Security        Amount of     Issue or       Cost of       Whom Security      Given with      Received for
Security      Issued         Security       Renewal       Capital        was Issued         Security       Each Security
---------------------------------------------------------------------------------------------------------------------------
                                                                                      
None


CAPITAL CONTRIBUTIONS:



        Company                      Company
     Contributing                   Receiving                    Amount of
        Capital                      Capital               Capital Contribution
--------------------------------------------------------------------------------
                                                     
None


ITEM 3.  ASSOCIATE TRANSACTIONS

PART I.  TRANSACTIONS PERFORMED BY REPORTING COMPANIES ON BEHALF OF ASSOCIATE
         COMPANIES



  Reporting      Associate
   Company        Company        Types of       Direct      Indirect                  Total
  Rendering      Receiving       Services        Costs        Costs      Cost of     Amount
  Services       Services        Rendered       Charges      Charges     Capital     Billed
---------------------------------------------------------------------------------------------
                                                                   
None


PART II.  TRANSACTIONS PERFORMED BY ASSOCIATE COMPANIES ON BEHALF OF REPORTING
          COMPANIES



  Associate Company      Reporting Company     Types of Services    Direct Costs   Indirect Costs    Cost of    Total Amount
 Rendering Services     Receiving Services         Rendered            Charged         Charges       Capital       Billed
------------------------------------------------------------------------------------------------------------------------------
                                                                                              
Columbia Gulf                                     Operation &
  Transmission              Deep Water            Maintenance                         $ 11,418         N/A      $    11,418

 NiSource Corporate
  Services Company       Columbia Pipeline      Administrative       $    28,000                       N/A      $    28,000

 NiSource Corporate
  Services Company       NiSource Pipeline      Administrative       $    66,738                       N/A      $    66,738

 NiSource Corporate
  Services Company     NiSource Energy Tech.    Administrative       $    42,182                       N/A      $    42,182



                                       4

ITEM 4.  SUMMARY OF AGGREGATE INVESTMENT



($ in thousands)
----------------------------------------------------------------------------------------------------------------
                                                                                                    
INVESTMENTS IN ENERGY-RELATED COMPANIES:
   Total consolidated capitalization as of September 30, 2001                      10,001,821             Line 1
   Total capitalization multiplied by 15% (line 1 multiplied by 0.15)               1,500,273             Line 2
   Greater of $50 million or line 2                                                 1,500,273             Line 3
   Total current aggregate investment:  (categorized by major line
    of energy-related business)
     Energy-related business                                                            6,500
----------------------------------------------------------------------------------------------------------------
   Total current aggregate investment                                                   6,500             Line 4
----------------------------------------------------------------------------------------------------------------
   Difference between the greater of $50 million or 15% of capitalization and
    the total aggregate investment of the registered
    holding company system (line 3 less line 4)                                     1,493,773             Line 5
----------------------------------------------------------------------------------------------------------------
INVESTMENTS IN GAS-RELATED COMPANIES                                                  187,834
================================================================================================================


ITEM 5.  OTHER INVESTMENTS



 Major Line of Energy-         Other Investment in          Other Investment in        Reason for difference
   Related Business            last U-9C-3 Report           this U-9C-3 Report          in Other Investment
----------------------------------------------------------------------------------------------------------------
                                                                              
         None                  $ 1,932,253,000 **             $ 1,932,252,000                    *


-        For Columbia, the scope of the reporting of other investments includes
         investments, including gas-related guarantees, made before February 14,
         1997, in pre-existing subsidiaries that could have been acquired
         pursuant to Rule 58 (b) (2). These companies include Columbia Gas
         Transmission Corp., Columbia Gulf Transmission Co., Columbia Natural
         Resources, Inc., Columbia Energy Services Corp., and Columbia Propane
         Corp.

-        For NiSource Inc. the scope of the reporting of other investments
         includes investments made prior to 11-1-00 in pre-existing subsidiaries
         that could have been acquired pursuant to Rule 58 (b) (2). ** This
         number was misreported in the two previous reports due to arithmetical
         error.

ITEM 6.  FINANCIAL STATEMENTS AND EXHIBITS

List all financial statements and exhibits filed as a part of this report.

Confidential treatment requested.

EXHIBITS

1.       Copies of contracts required to be provided by Item 3 shall be filed as
         exhibits.

         NOT APPLICABLE

2.       Certificate stating that a copy of the reports for the previous quarter
         has been filed with interested state commissions shall be filed as an
         exhibit. The certificate shall provide the names and addresses of the
         state commissions.

         EXHIBIT A


                                       5

                                    SIGNATURE

Pursuant to the requirements of the Public Utility Holding Company Act of 1935,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.


                                                          NiSource Inc
                                               ---------------------------------
                                                          (Registrant)


Date:    November 29, 2001                By:        /s/Jeffrey W. Grossman
                                               ---------------------------------
                                                       Jeffrey W. Grossman
                                                  Vice President and Controller
                                                  (Principal Accounting Officer
                                                   and Duly Authorized Officer)


                                       6

                                    EXHIBIT A

CERTIFICATE

NiSource's Quarterly Report on Form U-9C-3 filed pursuant to Rule 58 for the
quarter ended September 30, 2001 was filed with each state commission having
jurisdiction over the retail rates of the public utility companies that are
associate companies of any of the reporting companies.

The names and addresses of each such state utility commission is:

     Commonwealth of Kentucky Public Service Commission
     730 Schenkel Lane
     Frankfort, KY 40602

     Public Service Commission of Maryland
     6 St. Paul Centre
     Baltimore, MD 21202

     Public Utilities Commission of Ohio
     180 East Broad Street
     Columbus, OH 43215

     Pennsylvania Public Utility Commission
     901 North 7th Street Rear
     Harrisburg, PA 17105-3265

     Virginia State Corporation Commission
     1300 East Main Street
     Richmond, VA 23219

     Indiana Utility Regulatory Commission
     302 West Washington Street, Room E 306
     Indianapolis, IN  46204

     Maine Public Utilities Commission
     242 State Street
     Augusta, ME  04333

     Massachusetts Department of Telecommunications & Energy
     One South Station
     Boston, MA  02110

     New Hampshire Public Utilities Commission
     8 Old Suncook Road
     Concord, NH  03301


                                       7