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

FORM N-17f-2

Certificate of Accounting of Securities and Similar
Investments in the Custody of
Management Investment Companies

Pursuant to Rule 17f-2 [17 CFR 270.17f-2]

1.    Investment Company Act File Number:    Date examination completed:

               811-1629                          September 15, 2006

2. State identification Number:

AL       AK       AZ       AR       CA      CO
CT       DE       DC       FL       GA      HI
ID       IL       IN       IA       KS      KY
LA       ME       MD       MA       MI      MN
MS       MO       MT       NE       NV      NH
NJ       NM       NY       NC       ND      OH
OK       OR       PA       RI       SC      SD
TN       TX       UT       VT       VA      WA
WV       WI       WY       PUERTO RICO

Other  (specify):

3. Exact name of investment company as specified in registration statement:

    RiverSource Dimensions Series, Inc.

4. Address of principal executive office (number,street,city,state,zip code):

     50606 Ameriprise Financial Center, Minneapolis, MN 55474


          THIS FORM MUST BE GIVEN TO YOUR INDEPENDENT PUBLIC ACCOUNTANT



           REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors of
RiverSource Dimensions Series, Inc.:

We have examined management's assertion, included in the accompanying
Management Statement Regarding Compliance with Certain Provisions of the
Investment Company Act of 1940, that RiverSource Disciplined Small Cap Value
Fund of RiverSource Dimensions Series, Inc. (the Fund) complied with the
provisions of subsection (b) and (c) of Rule 17f-2 under the Investment
Company Act of 1940 as of June 30, 2006 and during the period from May 31,
2006 (the date of our last examination) through June 30, 2006. Management is
responsible for the Fund's compliance with those provisions. Our
responsibility is to express an opinion on management's assertion about the
Fund's compliance based on our examination.

Our examination was made in accordance with standards established by the
Public Company Accounting Oversight Board (United States) and, accordingly,
included examining, on a test basis, evidence about the Fund's compliance
with those requirements and performing such other procedures as we
considered necessary in the circumstances. Included among our procedures
were the following tests performed as of June 30, 2006 and the period from
May 31, 2006 through June 30, 2006, with respect to securities transactions:

o    Count and inspection of all securities located in the vault, if any, of
     Ameriprise Trust Company, the Custodian, without prior notice to
     management;

o    Confirmation of all securities, if any, held by institutions in book
     entry form (Wells Fargo Bank Minnesota, N.A., The Bank of New York, and
     The Depository Trust Company);

o    Confirmation or examination of underlying documentation of all
     securities purchased but not received, hypothecated, pledged, placed in
     escrow, or out for transfer with brokers, pledges and/or transfer
     agents;

o    Reconciliation of all such securities to the books and records of the
     Fund and the Custodian; and

o    Test of selected security transactions since the date of our last
     report.

We believe that our examination provides a reasonable basis for our opinion.
Our examination does not provide a legal determination on the Fund's
compliance with the specified requirements.


In our opinion, management's assertion that the Fund was in compliance with
the above mentioned provisions of Rule 17f-2 of the Investment Company Act
of 1940 as of June 30, 2006 and for the period from May 31, 2006 through
June 30, 2006 is fairly stated in all material respects.

This report is intended solely for the information and use of management of
the Fund and the Securities and Exchange Commission and should not be used
for any other purpose and is not intended to be and should not be used by
anyone other than these specified parties.

                                                    /s/ KPMG LLP
                                                    ------------
                                                        KPMG LLP

Minneapolis, MN
September 15, 2006





           MANAGEMENT STATEMENT REGARDING COMPLIANCE WITH CERTAIN
              PROVISIONS OF THE INVESTMENT COMPANY ACT OF 1940

We, as members of management of RiverSource Disciplined Small Cap Value Fund
of RiverSource Dimensions Series, Inc. (the Fund) are responsible for
complying with the requirements of subsections (b) and (c) of Rule 17f-2,
Custody of Investments by Registered Management Investment Companies, of the
Investment Company Act of 1940. We are also responsible for establishing and
maintaining effective internal controls over compliance with those
requirements. We have performed an evaluation of the Fund's compliance with
the requirements of subsections (b) and (c) of Rule 17f-2 as of June 30,
2006 and from May 31, 2006 through June 30, 2006.

Based on this evaluation, we assert that the Fund was in compliance with the
requirements of subsections (b) and (c) of Rule 17f-2 of the Investment
Company Act of 1940 as of June 30, 2006 and from May 31, 2006 through June
30, 2006, with respect to securities reflected in the investment account of
the Funds.

AMERIPRISE FINANCIAL, INC.

By: /s/ Jeffrey P. Fox
    --------------------------------------------------------
        Jeffrey P. Fox, Vice President-Investment Accounting