Abstract
Thermal change in lake storage between beginning‐of‐month (BOM) dates was calculated from joint volumetric and mass balances. Thermal change in storage was important in May and July because published data (5) indicate no change in lake storage during these months in 1976. For the remaining months, thermal change in storage peaked during the period of thermal stratification, when it accounted for over 10% of the change in storage. Thermal corrections to net basin supply (NBS) ranged from 30% to more than 100% when the NBS was less than 400m3/s; thermal corrections to NBS when greater than 400m3/s were between 1% and 30%, and they averaged 8.5%. An error analysis indicated that a 0.4 °C error along the entire BOM temperature profile yielded an average error of 27% in the monthly thermal change in storage.
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