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Las Vegas - march 16, 1943 W 23-3-3 Mr. Frank strong; Weir measurement* were made of the production of the wells and springe yesterday, and X an attaching hereto the result thereof, together with a re-statement of the May 5, 1942 measurements for ready comparison. You will note an increase of almost half a million gallons per day. The weir boxes for the Big Spring and Well Ho. 2 are very well set with a straight run of at least 60 feet prior to passing over the weir, as recommended by State Engineer. However, the weir box for Well Ho. 1 is too ©lose to the well and appears to be too short so that the velocity of the water distorts the reading. We measured 74- Inches on this weir box but this was obviously incorrect, so we checked It with a still pond and found ? inches even which we have shown in the attached table. The same difficulty is apparent at the weir box for Well Ho. 6. This might be remedied in a measure If the overflow pipe were trained in at the bottom Instead of the top of the weir. X understand there are three pumps on hand here, Intended for Wells Ho. 4, 7 and 9. Ho. 9 is now producing over a million gallons per day and in-as-much as it has a metal derrick it would probably be much better to move the derrick over to Ho. 10 and Install a pump therein? or if this Is not desirable it could better be used on Ho. 8. The Wallace & Tiernan representative is here today to install the chlorlnatdr In pump house at Open Spring. If it has been decided to go ahead with this installation, X think it is very Important that the line be thoroughly cleaned out thru weir box at settling basin and samples sub­mitted for bacteriological analysis before the production from this souroe is allowed to get into the City mains. This is extremely important and X trust there will be no slip-up on the part of our employees. l A M T .fiUBHtf