pipe, was found to be as follows:
On 8.6 miles, 11-in. pipe, 146,600 gal. per day = 17,046 gal. per mile.
" 4 " 12 " " 14,829 " " " = 3,702 " " "
The 7-1/2-in. pipe on this section appears to be leaking less than the
12-in. pipe. Inspection and measurement of it are to be made in a short
time.
There is no material leakage from the 10-and 16-in. pipe between Bonito
Creek and Nogal Reservoir, as determined by velocity and volumetric
measurements hereafter described. The greatest probable error in the
velocity measurements would not exceed 1/2 per cent. If such error
existed, and was all charged to leakage, it would amount to but 17,204
gal. per day, or 1,582 gal. per mile, out of a daily delivery of 3,784,000
gal.; but the measured discharge of the pipe, as determined by the
velocity, was 5.84 sec-ft., while the mean maximum volume of this water
over the weir at the end of the pipe is recorded by the weir as 5.88
sec-ft.
From Coyote, east along the railway, the wood pipe is remarkably tight.
The rate of leakage from it, as determined by 600 observations uniformly
distributed, was as follows:
11-in. pipe = 120 gal. per mile per day.
8-1/2 and 7-1/2-in. pipe = 268 " " " " "
The maximum rate on 1 mile was 1,613 gal.
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