upr000045 40

26. Record of velocities in well 17 Depth Velocity (feet) (feet per second) Depth (feet) Velocity (feet per second) Depth (feet) Velocity (feet per second) 7 .04 150 .35 465 .42 15 .04 170 .35 466 .46 30 .04 200 .34 470 .49 50 .04 250 .34 490 .48 70 .04 300 .33 500 .50 100 .04 350 . 33 550 .50 125 .04 400 .34 600 .48 130 .07 450 .33 615 .47 132.5 .21 460 .34 617 .42 135 .35 464 .34 618 .26 140 .35 464 .34 The owner reports that the well has 120 feet of 8-inch casing, 450 feet of 6-inch casing a nd 620 feet of 4-inch casing. On the basis of 4-inch casing th e flow in this well from depths of 125 to 7 feet amounts to a little over a gallon a minute, which . about o quals the amount of leak- age in the pipe fittings above the surface during ; the test. The flow from 615 to 466 feet amounted to about 15 gallons a minute, while the flow from 464 to 135 feet amounted to about 11 gallons a minute. Evidently the water flowing in the well during the test came from the bottom of the well. The leakage was of nace ssity me asured inside of the 4 -inch casing and, of course, does not indicate the leakage tha t might be taking place under or through the 8-inch casing or leakage from lows r artesian sands that might be escaping into upper artesian sands having lower artesian water pressure. The static artesian water pressure, amounting to about 90 feet with reference to the surface, is the highest pressure measured during the investigation. The volume of water flowing up between the 6-inch