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Show TELLS OF BREAK IN MM 01 Joseph Jenson of Salt Lake Writes of Flood in Technical Tech-nical Magazine. The story of the Ha ten town dam, from the first attempt at construction two years ugo by private parties to the blr break on May 25, is told in the Engineer-ins Engineer-ins Record of June 27 by Joseph Jenson of Salt Lake. ' The construction of the dam, the manner man-ner of the break and the probable cause of the break are given In detail. The estimated damage, according to Mr. Jenson, Jen-son, is within $100,000. the larper portion por-tion of which Is the -result of covering with gravel and other debris tracts of farm land along the Sevier river, and covering with finer deposits of silt growing grow-ing crops and washing away farm buildings build-ings and fences. - With reference to the cause of the break, Mr. Jenson says: The immediate cause of the break may never be known. The onlv plausible plaus-ible reason that the writer can assign, as-sign, after a careful examination of the premises after the break and with a pretty thorough knowledge of the construction and later behavior of the dam, is that the seepage water from j the west hill saturated that part of the dam to the danger point. As already al-ready stated, at the time of construction con-struction the seepage was concentrated concen-trated and led from the dam area by drain "points. At the time of the examination subsequent sub-sequent to the break, a new seep or spring hole was observed in the west hill at an elevation of about fortv fftet above the stream bed, which flowed perhaps .25 second feet of water. wa-ter. This spring was on the opposite oppo-site side of the stone culvert from which the break occurred and distant dis-tant about 100 feet. Tt is possible that this water caused a line of saturation sat-uration downward and outward in the fill until it reached and overflowed the crest of the culvert. |