There is no doubt that a part of the Pompton flood was so diverted, but
there was maintained throughout at Little Falls a steady pressure, which
constantly increased to maximum. This flood check, at Dundee dam was
observed in 1902, but it could not be shown to arise from the frequently
mentioned phenomena at the mouth of Pompton River. It is important to
prove or disprove this hypothesis. If it were found to be true, it
could be advantageously taken into consideration in connection with
measures for the prevention of flood damages. As the Pompton had no such
effect upon the flood flow at Dundee dam in two consecutive historic
floods, the writer is inclined to believe that the idea is entirely
erroneous.
[Illustration: FIG. 1.--Comparative flood run-off at Dundee dam, March,
1902, and October, 1903.]
Since the flow curves in fig. 1 were drawn it has been found by careful
observation that the depressions which occur in the rise of every flood
over Dundee dam are probably due to the carrying away of the flashboards
which are placed upon the dam crest in times of low water.
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