Pacific Newt Mortality in November

The following charts depict Pacific Newt mortality in the month of November at Lexington Reservoir for four migration seasons. Notice the start of migration is different each year, depending on the cumulative rainfall in the month of November. Also notice the Nov. death toll is much higher this year than in previous seasons. The bars in the second chart mark survey dates (surveys were conducted 1-2 times per week). The arrows indicate the start of migration for each season.