Burst Hydration?

Is burst hydration effective? I drink about 2 liters in the morning during my workout and then don't drink much at all during the day at work. (7am-7pm) at night I drink another 2-3 liters to try and catch up. Is this type of hydration bursts where I drink a lot in a short period of time effective? Or am I just peeing all the excess water out without getting the benefits.