1. Hydrometeorological report. 45. Probable maximum and TVA precipitation for Tennessee River basins up to 3,000 square miles in area and durations to 72 hours, prepared by Francis K. Schwarz and Norbert F. Helfert, May 1969, Errata. Bookmark Corporate/Agency Authors: National Weather Service and Commerce Dept. Publisher: National Weather Service Date: Nov. 1, 1970 SuDoc number: C 30.44:45/errata