In addition, since 1911, "the number of days with average air temperatures below freezing has decreased by 30 days per year" and "the fraction of snow in the total precipitation has decreased from 52 to 34 percent."

In short, the lake and days are growing warmer; the snow/rain ratio is dropping.

Long-term data on Lake Tahoe has been collected by the university for nearly 40 years. The material is analyzed and reported annually. STATE OF THE LAKE REPORT 2007 covers data though 2006. Click here for the complete report, including an Executive Summary.