The scientists studied water flow in a sandy underground area by measuring how fast water moves through it. They found that the speed of water movement varied at different depths, with values ranging from 563.0 to 13.5 feet per day. The average speed of water movement through the entire area was between 204.5 and 35.9 feet per day. When they did bigger tests by pumping water out of the ground, they found the speed of water movement to be between 195.5 and 175.9 feet per day. They also discovered that the effects of their tests could be felt up to 100 feet deep into the ground.