Rain! Pool full - drain or wait?

[mshumack]

I'm curious about something.

I see a lot of posts about draining the pool after a rainstorm.

Are these pools not equipped with overflows, or is the overflow simply not adequate to handle the volume of rain that falls?

I have an oveflow built into my "autofiller". It uses a one inch PVC line for the overflow drain. After a heavy night's rain if my pool is 2 inches high, it will take all day for the water level to drop.