| Show TO SURVEY SNOW SUPPlY Engineers r t AVI UI 11 Inke Investigation of n Depth of of Water ner l Producing Blanket In Canyons Canyon 1 To determine as accurately as pos poe possible sible the Hie amount of water supply th the th city may count upon during durin the coming corning summer months the engineering de department department le de- is making preparations for an extensive snow now sune survey In the canyons un under cr the direction of oC City En Engineer D. D H. H Blossom an and 1 Water ater Engineer S Sylvester Q Cannon Surveying parties will be sent Into Big Cottonwood Parle Parleys s 's and City Creek Cleck canyons Just jUt before tho the spring thaw and accurate data will DC no gathered gathered gath ered upon which the engineers mo may fl figure uro the tho amount of ot water the cit city may expect from these canyon canon store store- houses It will require two or three weeks weel s to complete the work Measurements are taken of or the tho breadth an and length of oC the snowfIeld Depth of snow i Is mea measured at regular intervals b by means menns of graduated alpIn alpin- tocks stocks Hollow tubes lUbes are arc push pushed Into the tho snow and a column of oC It from top to bottom of ot the pack b Is brou brought ht forth to determine the density of the thc pack With scales the tho weight per unit of oC volume Is determined to figure ure the tho water water water wa wa- ter value With tho the figures thus thug ob obtained obtained obtained ob- ob th the thc engineers are arc able to make a fairly airly accurate estimate of the ax ct amount of oC water which will be furnished furnished fur fur- b by the melting of ot the snow show al allowances allowances allowances al- al being m made de for loss ls b by by- evaporation e ap evaporation oration and absorption by the earth A fairly accurate estimate can be made also of ot the rate of melting inciting The Thc work all has to be done on snowshoes and acres and acres of oC snow h have ho o to bo bl tramp tramped d over b by the the surveyors to lo ob obtain obtain obtain ob- ob tain the tho figures desired |