General studies : November, 1967 / by John C. Ayers, Joseph C. K. Huang.

30

who do not notice the rising water until too late; pier fishermen
and children playing at the water's edge being the chief victims.
Within the.bounds of the seiche-causing conditions, it may
be assumed that a line squall from a direction west of northwest
might have a progress velocity sufficient to match the mode of
the southern basin and to produce a seiche-front so shaped as to
trap against shore at the site. The maximum open-lake seiche of
record is the 4.2 feet at Wilson Ave. Crib on. 6 July 1954 above.
Proportioning from the 3.2 foot rise at Wilson Ave. Crib on 26 June
1954, which produced 6 feet of seiche at Michigan City, it appears
that maximum seiche at the plant site would be of the order of 8
feet.
C. DILUTION AND DISPERSION OF THERMAL EFFLUENT
Operation of the proposed plant will produce a "river" of
warmed effluent in a region where none existed naturally. The
flow of this "river" is expected to go from an initial one-unitin-operation condition of 1200 cfs to about 4000 cfs at possible
ultimate 4-unit operation.
Since it is anticipated that the dilution of nucleid wastes
to the level required for public safety will be accomplished
before the effluent is released to the lake, the problem becomes
one of estimating future dispersion of future thermal waste in
future effluent.
For the estimation of the dispersion of the future plume of
warm effluent water, probably the best model is the behavior of
natural river effluents.