Mesa Offshore Trust Announces No Trust Income for March 2009

AUSTIN, Texas--(Business Wire)--
Mesa Offshore Trust (OTCBB: MOSH) announced that there will be no Trust income
distribution for the month of March 2009 for Unitholders of record on March 31,
2009.

The Trust will receive $14,751 in Royalty income from the Working Interest Owner
for the month of March 2009. On December 18, 2008, the Working Interest Owner
informed the Trustee that there is no longer a deficit balance due for
abandonment accrual for amounts expended and for projected future abandonment
expenses for the properties in which the Trust has an interest. No Royalty
income will be distributed to Unitholders until JPMorgan Chase Bank, N.A., in
its capacity as Trustee (the "Trustee"), recoups Trust expenses being paid from
the reserve that the Trustee has established for anticipated future expenses. As
of March 24, 2009, approximately $4.5 million will be withheld by the Trustee
from future Royalty income before Trust distributions to the Unitholders will
resume. Trust expenditures for the month of March 2009 will be approximately
$114,000. On December 3, 2007, the Trust entered into an Amended and Restated
Promissory Note with JPMorgan Chase Bank, N.A. as lender (the "Lender"), which
amended the Demand Promissory Note (the "Demand Note") dated September 28, 2007,
relating to demand loans that may be advanced by the Lender from time to time in
the principal amount of up to $3 million. On August 25, 2008, the Trustee
executed an amended and restated Demand Note that among other things increased
the aggregate principal amount available for borrowing to $4 million. On January
28, 2009, the Trustee executed an amended and restated Demand Note that among
other things increased the aggregate principal amount available for borrowing to
$5 million. The demand loans bear interest at the prime rate plus 2%, provided
such rate shall in no event exceed the maximum legal rate of interest permitted
by applicable law. As of March 19, 2009, approximately $4,417,000 had been
advanced to the Trustee for Trust expenses under this Demand Note and the Trust
had unpaid expenses of approximately $115,000.

The extent of future distributions from the properties in which the Trust has an
interest will continue to be dependent on normal factors associated with oil and
gas operations such as oil and gas production levels, prices and associated
cost, accruals for future abandonment costs, timing and extent of capital
expenditures.

Mesa Offshore Trust
JPMorgan Chase Bank, N.A., as Trustee
Mike Ulrich, 1-800-852-1422
www.businesswire.com/cnn/mosh.htm

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