Now that's an interesting question...why do you ask?
In July of 1952 the lake started at 215, in August it started at 240, in Sept 258, 267 in October of 52. In Nov of 52 the minimum elevation was 268 and in December 52 the lake went over 280. The lake dipped to 281 in 1956 once but has never been below 280 since Dec of 52 as it was filling....jfo