Sessional Papers, Том 52, Брой 15

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C. H. Parmelee, 1917
"Report of the Dominion fishery commission on the fisheries of the province of Ontario, 1893", issued as vol. 26, no. 7, supplement.
 

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114

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Страница 17 - Second-foot" is an abbreviation for cubic foot per second and is the rate of discharge of water flowing in a stream 1 foot wide, 1 foot deep, at a rate of 1 foot per second. It is generally used as a fundamental unit from which others are computed by the use of the factors given in the following table of equivalents.
Страница 18 - In the table of monthly discharge the column headed "Maximum" gives the mean flow for the day when the mean gage height was highest. As the gage height is the mean for the day it does not indicate correctly the stage when the water surface was at crest height and the corresponding discharge was consequently larger than given in the maximum column.
Страница 21 - The rating, or relation between the velocity of the moving water and the revolution of the wheel, is determined for each meter by drawing it through still water for a given distance at different speeds and noting the number of revolutions for each run.
Страница 19 - March 23, 1901). 1 second-foot equals 38.4 Colorado miner's inches. 1 second-foot equals 40 Arizona miner's inches. 1 second-foot equals 7.48 United States gallons per second; equals 448.8 gallons per minute; equals 646,272 gallons for one day. 1 second-foot equals 6.23 British imperial gallons per second. 1 second-foot for one year covers 1 square mile 1.131 feet or 13.572 inches deep.
Страница 25 - Second-feet per square mile" is the average number of cubic feet of water flowing per second from each square mile of area drained, on the assumption that the run-off is distributed uniformly both as regards time and area. "Run-off (depth in inches...
Страница 18 - CONVENIENT EQUIVALENTS. The following is a list of convenient equivalents for use in hydraulic computations: . 1 second-foot equals 40 California miner's inches (law of March 23, 1901).
Страница 25 - Acre-foot (ac-ft) is the quantity of water required to cover an acre to the depth of 1 foot and is equivalent to 43,560 cubic feet.
Страница 18 - ... they also give, as far as possible, a complete history of all the changes that have occurred since the establishment of the station that would be factors in using the data collected. The discharge-measurement table gives the results of the discharge measurements made during...
Страница 21 - ... are made. The discharge of any elementary strip is the product of the average of the depths at the two ends times the width of the strip times the average of the mean velocities at the two ends of the strip.
Страница 18 - ... that mean gage height. As the gage height is the mean for the day, there might have been short periods when the water was higher and the corresponding discharge larger than given in this column. Likewise in the column of "Minimum" the quantity given is the mean flow for the day when the mean gage height was lowest. The column headed "Mean" is the average flow for each second during the month.

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