Report of Progress of Stream Measurements for Volume 2, PT. 1 - V. 5, PT. 4

Report of Progress of Stream Measurements for Volume 2, PT. 1 - V. 5, PT. 4

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 edition. Excerpt: ... a water surface of 13.4 square miles. A timber dam at the foot of the latter lake produces a storage depth of 5 feet, with an aggregate storage capacity of 1,867,500,000 cubic feet, equivalent to a now of 68 second-feet for thirty days. A similar dam at the foot of Beaver Lake gives a storage depth of 6 feet. The water from Beaver Lake is used chiefly for driving logs. THUNDER BAY RIVER NEAR ALPENA, MICH. A gaging station was established at the dam of the Fletcher Paper Company, 4 miles above Alpena, April 4, 1901. The record includes two readings each day of the depth on the crest gage, located 75 feet upstream from the headgates, opposite the left-hand end of the dam. IRR 83--03---19 The dam is of timber, practically water-tight, and is usually surmounted by dashboards. It contains, in addition to throe spillway sections of lengths!0, 105, and 181.5 feet, respectively, a log slide 40 feet in width. The crest of the dam was originally level, but settlement of the middle section has made it necessary to subdivide the spillwas into several short sections, each assumed level at its average elevation, for purposes of calculation. The discharge over the main dam has been calculated by the weir formula, using coefficients derived from Cornell University Experiment No. 13 for a dam of similar cross section. Discharge over flashboard sections has been calculated by means of the Francis formula. There is also a subsidiary log way and a headrace overflow, the latter 3 feet in width, the flow through which lias been calculated by suitable formulas. The adjoining pulp and paper mill has 14 pairs of 26-inch Trump model turbines, arranged in three groups, each containing four turbines on horizontal shafts, with one double horizontal turbine. The...
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Product details

  • Paperback | 222 pages
  • 189 x 246 x 12mm | 404g
  • United States
  • English
  • black & white illustrations
  • 123680533X
  • 9781236805331