HOW MUCH WATER DOES A TREE DRINK? A healthy 100-foot-tall tree has about 200,000 leaves. A tree this size can take 11,000 gallons of water from the soil and release it into the air again, as oxygen and water vapor, in a single growing season.Click to see full answer. Simply so, how much water does a pine tree drink a day?A mature oak can uptake hundreds of gallons of water a day, and a mature Eastern Pine can utilize in excess of 100 gallons in one 24 hour period.Secondly, do pine trees use a lot of water? Pine trees (Pinus spp.) are evergreens, which means they don’t drop all their needles unless something’s really wrong. Overwatering causes more damage to pines than droughts, because the needle-like pine leaves protect against water loss. Pines are adapted to dry soils; too much water can kill the tree. Likewise, how much water do mature pine trees need? A general rule of thumb is to apply 10 gallons of water for every inch of trunk diameter when you water. Measure the trunk diameter at knee height. You can eyeball the diameter or hold up a ruler or yardstick to get the inches. The general watering formula is: tree diameter x five minutes = total watering time.How do I know if my pine tree needs water? There are a few ways to determine whether overwatering is afflicting your pine tree. Look for excessive needle drop in the fall. Walk around the tree. Check for dieback of limbs. Look for signs of excessive moisture in the soil around the pine tree. Check soil moisture before watering trees.