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Valley Sugar Beet and Irrigated Land Company. This <br />waste gate is a decided improvement on all other simi- <br />lar gates or devices built for sluicing sand from the ca- <br />nal back to the river. The strong current into the canal <br />from the river in time of flood brought unusually large <br />quantities of sand, which was deposited in the first mile <br />of the canal, and could not readily be removed by merely <br />opening the usual type of sand gates. To meet this <br />emergency Mr. Berry planned a series of small concen- <br />tric channels of brick and reinforced concrete, below <br />the level of the floor or grade of the canal, each of these <br />channels drawing sand from a distinct section of the <br />bottom of the canal. This enables the gate to draw sand <br />from the bottom with equal facility at all points and the <br />bottom with equal facility at all points on the bottom, <br />where ordinarily the scour takes place on the side next <br />to the gate, leaving a bar on the side of the canal oppo- <br />site the gate. There are seven of these channels, each <br />independently controlled by iron sluice gates. Since this <br />structure has been in operation no trouble has been <br />experienced with sand in the canal. Everything which <br />passes this gate goes on through to the lands. <br />RATING FLUME. <br />A short distance below the waste gate, and 8000 feet <br />below the headgate, is a rating or measuring flume, <br />which is required by the State Engineer for the mea- <br />surement of the inflow from the river. This requirement <br />is enforced alike on all canals and ditches throughout <br />the State, and is the means by which their legal priori- <br />ties are measured out to each. The flume is a rectan- <br />gular one, built with its floor at the exact grade of the <br />30 <br />