EXHIBIT 32.2
                                                                    ------------




                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


In connection with the periodic report of Dawson Geophysical Company (the
"Company") Form 10-Q for the period ending June 30, 2004 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I,
Christina W. Hagan, Executive Vice President, Secretary and Chief Financial
Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

     (1)  The Report fully complies with the requirements of Section 13 (a) or
          15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d);
          and

     (2)  The information contained in the Report fairly presents, in all
          material respects, the financial condition and results of operations
          of the Company.



Dated: August 5, 2004             /s/ Christina W. Hagan
                                  ----------------------------------------------
                                  Executive Vice President, Treasurer, Secretary
                                  and Chief Financial Officer