Rather , its desiccation is thought to be mostly due to increase in the evaporation rate as the climate warmed .
Surprisingly , the watershed feeding Lake Lahontan is not thought to have been significantly wetter during its highstand than it is currently .
Lake Lahontan 's desiccation is thought to be mostly due to increase in the evaporation rate as the climate warmed .
Surprisingly , the watershed feeding Lake Lahontan is not thought to have been significantly wetter during its highstand than it is currently .