Indeed, so marked was
the variation that it was believed that the mean rainfall for all the
observation stations on the basin did not bear sufficient relation to
observed run-off to allow of any reliable deductions. In the case of the
October storm, however, the distribution of rainfall was more nearly
uniform, and the run-off from the highland tributaries into the Central
Basin must have been proportionately different in amount from that
indicated in the upland tributary tables in the report of the previous
flood. The data given for the 1902 flood can not, therefore, in the case
of the highland tributaries, be applied to the conditions which obtained
in the flood of 1903.
FLOOD AT MACOPIN DAM.
Mr. Morris R. Sherrerd, engineer of the Newark city water board, has
furnished flow computations over Macopin intake dam, which is the head
of the Newark pipe line. As about 73 per cent of the Pequanac drainage
area lies above this intake, the table on page 16 shows roughly an
equivalent percentage of the flow contributed by Pequanac River to the
Central Basin of the Passaic.
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