EnerVest Energy and Oil Sands Total Return Trust Announces August 2009 Distribution

CALGARY, ALBERTA--(Marketwire - Aug. 18, 2009) -

NOT FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES OF AMERICA.

EnerVest Energy and Oil Sands Total Return Trust ("the Fund") (TSX:EOS.UN) today announced the August distribution of $0.0417 per unit. The record date for this distribution is August 31, 2009 and the payment date will be September 15, 2009. The ex-distribution date for this payment is August 27, 2009.

About The Fund

The Fund is a closed-end trust investing in businesses involved directly and indirectly in the Canadian oil sands and traditional oil and natural gas royalty trusts.

Certain statements included in this news release constitute forward-looking statements. The forward-looking statements are not historical facts but reflect EnerVest Management Ltd.'s and its affiliates (the "Administrator") current expectations regarding future results or events. These forward-looking statements are subject to a number of risks and uncertainties that could cause actual results or events to differ materially from current expectations. Although the Administrator believes that the assumptions inherent in the forward-looking statements are reasonable, forward-looking statements are not guarantees of future performance and, accordingly, readers are cautioned not to place undue reliance on such statements due to the inherent uncertainty therein. The Administrator undertakes no obligation to update publicly or otherwise revise any forward-looking statement or information whether as a result of new information, future events or other such factors which affect this information, except as required by law.