ITEM 8.01. Other Information.
On February 24, 2009 Whiting USA Trust I (the "Trust") announced certain information relating to the December 31, 2008 reserve report of the underlying properties in which the Trust has an interest. The Trust holds a net profits interest, which terminates when 9.11 million barrels of oil equivalent have been produced from the underlying properties and sold (which amount is the equivalent of 8.20 million barrels of oil equivalent in respect of the Trust's right to receive 90% of the net proceeds from such reserves pursuant to the net profits interest). Based on the reserve report from the Trust's independent petroleum engineer for the underlying properties as of December 31, 2008, these reserve quantities are projected to be produced by December 31, 2021, which compares to the December 31, 2017 projected date in the December 31, 2007 reserve report. This change is due to the much lower oil and natural gas price assumptions being used in the independent engineers' report as of December 31, 2008 as compared to the report prepared as of December 31, 2007. The application of the lower prices in the reserve estimate shortens the economic producing lives and reduces the reserve estimates of wells producing at lower rates. The projected time to produce the remaining reserves attributable to the Trust is therefore extended. Copies of the press release and letter from Cawley, Gillespie and Associates, Inc. are attached as Exhibits 99.1 and 99.2 hereto. ITEM 9.01. Financial Statements and Exhibits.
(d) Exhibits.

99.1 Press Release dated February 24, 2009.

99.2 Letter of Cawley, Gillespie and Associates, Inc. dated January 12, 2009

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