WAURIKA LAKE, OKLAHOMA.

SEC. 3137. WAURIKA LAKE, OKLAHOMA. The remaining obligation of the Waurika Project Master Conservancy District payable to the United States Government in the amounts, rates of interest, and payment schedules— (1) is set at the amounts, rates of interest, and payment schedules that existed on June 3, 1986, with respect to the project for Waurika Lake, Oklahoma; and (2) may not be adjusted, altered, or changed without a specific, separate, and written agreement between the District and the United States.