How do I know if I am drinking enough? Dr. Mike Nguyen May 28, 2011 May 29, 2011 5 Comments on How do I know if I am drinking enough? Graph showing urine output volume by hydration level. At 100% hydration, average urine output is 50 cc/hr or 1200 cc/day. Kidney stone patients should aim for 100 cc/hr or 2400… Read more »