Exhibit 99.1



                       Anworth Mortgage Asset Corporation
                         Announces Quarterly Dividends


    SANTA MONICA, Calif.--(BUSINESS WIRE)--April 13, 2007--Anworth
Mortgage Asset Corporation (NYSE: ANH) announced today that its board
of directors declared a quarterly common stock dividend of $0.05 per
share for the first quarter of 2007. The common stock dividend is
payable on May 17, 2007 to common stockholders of record as of the
close of business on April 30, 2007.

    Also, in accordance with the terms of Anworth's 8.625% Series A
Cumulative Preferred Stock, or Series A Preferred Stock, the board of
directors declared a Series A Preferred Stock dividend of $0.539063
per share for the second quarter of 2007. The Series A Preferred Stock
dividend is payable on July 16, 2007 to holders of record of Series A
Preferred Stock as of the close of business on June 29, 2007. The
dividend reflects the accrual from April 1, 2007 through June 30,
2007, or 90 days of a 360 day year.

    Also, in accordance with the terms of Anworth's 6.25% Series B
Cumulative Convertible Preferred Stock, or Series B Preferred Stock,
the board of directors declared a Series B Preferred Stock dividend of
$0.390625 per share for the second quarter of 2007. The Series B
Preferred Stock dividend is payable on July 16, 2007 to holders of
record of Series B Preferred Stock as of the close of business on June
29, 2007. The dividend reflects the accrual from April 1, 2007 through
June 30, 2007, or 90 days of a 360 day year.

    About Anworth Mortgage Asset Corporation

    Anworth is a mortgage real estate investment trust (REIT) which
invests in mortgage assets, including mortgage pass-through
certificates, collateralized mortgage obligations, mortgage loans and
other real estate securities. Anworth generates income for
distribution to stockholders primarily based on the difference between
the yield on its mortgage assets and the cost of its borrowings.
Through its wholly-owned subsidiary, Belvedere Trust Mortgage
Corporation, Anworth also invests in high quality jumbo
adjustable-rate mortgages and other mortgage-related assets and
finances these loans though securitizations.

    Safe Harbor Statement under the Private Securities Litigation
Reform Act of 1995

    This press release contains forward-looking statements within the
meaning of the "safe harbor" provisions of the Private Securities
Litigation Reform Act of 1995. These statements are based upon our
current expectations and speak only as of the date hereof. Our actual
results may differ materially and adversely from those expressed in
any forward-looking statements as a result of various factors and
uncertainties, including increases in the prepayment rates on the
mortgage loans securing our mortgage-backed securities, our ability to
use borrowings to finance our assets, risks associated with investing
in mortgage-related assets, including changes in business conditions
and the general economy, our ability to maintain our qualification as
a real estate investment trust for federal income tax purposes, and
management's ability to manage our growth. Our Annual Report on Form
10-K, recent and forthcoming Quarterly Reports on Form 10-Q, recent
Current Reports on Forms 8-K and other SEC filings discuss some of the
important risk factors that may affect our business, results of
operations and financial condition. We undertake no obligation to
revise or update publicly any forward-looking statements for any
reason.



    CONTACT: Anworth Mortgage Asset Corporation
             John T. Hillman, 310-255-4438 or 310-255-4493