ARTESIAN WELLS. 453 



26. The well at the Union Depot was sunk in December, 1883, to a 

 depth of about 506 feet. It is cased with 6-inch pipe to a depth of 362 

 feet and with 4-inch pipe to a depth of nearly 506 feet. Two large flows, 

 the first at 3G5 and the second at 506 feet, have been utilized. The original 

 pressure was 20 pounds; the discharge, 180,000 gallons per day. In Feb- 

 ruary, 1886, the well had become a pumping well, the quantity of water, 

 however, being sufficient for irrigating the grounds, running the fountains, 

 and supplying the depot. In December, 1890, the well was not in use. 

 Originally, when the Gas House well was flowing continuously it decreased 

 the flow of this well about 50,000 gallons. 



28. The American House well, corner of Sixteenth and Blake streets, 

 is supplied with a Worthington Duplex pump, which is very successfully in 

 operation. 



32. The Mullen well, at the Hungarian Flour Mills, corner of Eighth 

 and Wazee streets, was sunk in June, 1883, to a depth of 360 feet. It is 

 given here in illustration of a feature that is occasionally met with in the 

 Denver area. The original flow of the well was greatly decreased by the 

 subsequent sinking of another well within a few hundred feet, but after a 

 month's time not only its normal rate of discharge was resumed but for 

 a while the flow showed an actual increase. It is difficult to offer a 

 satisfactory explanation of this phenomenon; it was evidently due to local 

 conditions. In 1890 the well had become a pumping well. 



37. The well at the Milwaukee Brewery, on the corner of Twelfth and 

 Larimer streets, was sunk in September, 1883. It is 354 feet deep and has 

 a 4-inch casing to the depth of 286 feet. Two seed bags were used as 

 packing. The original head was 27 feet, but the water-level in December, 

 1890, had fallen to 6 feet below the surface. For three years from its. 

 completion, and possibly for even a longer period, the original flow was 

 fully maintained, supplying not only the brewery but an entire block 

 besides. The permanency was attributed, in part, to the fact that the 

 bottom of the hole was considerably enlarged by reaming out, made 

 necessary by the wedging of a drill, and in part to absence of other wells 

 in the immediate vicinity. 



