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Show 5 6 UNDERGROUND WATER IN VALLEYS OP UTAH. by tunneling at several localities along the eastern slope of the Tintic Mountains. In the valley of Kimball Creek, in sec. 11, T. 11 S., R. 2 W., there is a tunnel 200 feet long in volcanic rock, which furnishes about 20 gallons a minute, and water sufficient for milling purposes has been developed by drifting into the alluvium and bed rock at the head of Homansville Canyon. « Away from the bordering mountains in the highland portion of Goshen Valley, very little underground water has been obtained, and considering the slight run- off and the small tributary drainage area, not much can be expected. The most favorable locations for sinking wells are along the courses of drainage ways.. The most successful are along the course of Kimball Creek, but even there water commonly is not obtained at depths less than 150 feet. A number of dry wells have been sunk in the upland area. WTEST OF UTAH LAKE. The narrow strip of lowland between the western shore of Utah Lake and the Lake Mountains is very scantily provided with water. The low, narrow mountains catch relatively little precipitation; there are no perennial streams, and the arroyos carry water only for a few days during the year. From the foot of the Bonneville and Provo terraces that extend along the base of the mountains the surface slopes gradually lakeward and is underlain chiefly by coarse- textured deposits. Along t h e shore of the lake a number of seep springs occur near water level. They are most abundant from Lehi southward, and there are also a few 2 or 3 miles beyond Pelican Point, where their presence is marked by low, marshy areas, one of which is utilized in the cultivation of a few acres of alfalfa. Near Pelican Point there is a feebly flowing well 90 feet deep, in which water was obtained at a depth of 60 feet; and in a near- by well a feeble flow is also obtained, which is said to come from a depth of 154 feet. Few if any other attempts have been made to recover underground water in this region. Judging from the wells at Pelican Point one might expect to obtain similar results along the western shore of the lake, but if flows were obtained the water would be at so low an elevation as t o make it of little use without pumping. Away from the shore flows can hardly be expected. It may be, however, that limited amounts of water can be found to rise in wells to within pumping distance.. Prospecting for shallow wells might be attempted in the arroyos, but because of the limited watershed and precipitation the prospect is not good for obtaining enough underground water for extensive irrigation. Pumping directly from the lake presents attractive possibilities. WELL, DATA. The writer is indebted for the subjoined list of wells to Messrs. F. D. Pyle and T. F. McDonald. Mr. Pyle worked in Utah Lake Valley and west of Jordan River. Mr. McDonald, whose assistance was obtained through the courtesy of Mr. George W. Snow, engineer of Salt Lake City, collected data east of Jordan River. The yield of flowing wells was commonly measured by means of tables which are here inserted, together with accompanying explanation, because the method aroused popular interest and because the edition of the bulletin in which the tables were published has been exhausted. METHOD OF MEASUREMENT, b Tables for determining the discharge of water from completely filled vertical and horizontal pipes were prepared a number of years ago by Prof. J. E. Todd, State geologist of South Dakota, who issued a private bulletin describing simple methods of determining quickly, with fair accuracy and with little trouble, the yield of artesian wells. In the following notes the tables and explanations relating to vertical and horizontal pipes are taken from this bulletin. The explanations have been appended by the present writer. a Smith, G. O., and Tower, G. W., Description of the Tintic district: U. S. Geologic Atlas, special folio 65, U. S. Geol. Survey, 1900. 6 Slichter, C. S.: Water- Sup. and Irr. Paper No. 110, U. S._ Geol. Survey, 1905, pp. 37- 42. |