Winter operations, 1970-1971 / John C. Ayers, Norbert W. O'Hara, William L. Yocum.

no heat) from the plant.
Figure 9 gives a distant view of ice conditions at NIPSCO's Michigan City
generating plant on 17 March 1971. The discharge channel is at the right middle
distance with ice on both sides.
Figure 10 gives the ice conditions in Michigan City harbor on 10 March 1971.
Ice-coated riprap and sheet piles lie along the front right side of the picture
but in the right three-quarters distance is a heavy curving vertical-faced rampart of shore ice.
Figure 11 depicts the plume from Michigan City's generating station in floe
ice on 10 March. The plume enters from left foreground. Michigan City lighthouse (at the outer end of the main breakwater) shows at the right center edge.
Figure 12 presents the conditions of shore ice at the NIPSCO Bailly Station
on 17 March 1971. Shore ice reaches up to both s'des of the iron discharge
flume. The offshore circular intake structure lies at the edge of blue water,
and a visible plume of blue water emerge, from the discharge flume.
Figure 13 shows the discharge c, a small two-headed creek between Palisades
and South Haven which (with no mn-made heat) has on 17 March 1971 produced a
greater destruction of shore Lce ridges than had the plume of Bailly Station on
the same day (Figure 12)
Figure 14 (also on 17 March 1971) shows, in about the same scale as Figure
12, the disruption r shore ice by the outlet flow of the Grand Marais Lakes between Stevensvi-'e and Bridgman, Michigan. The outflow from Grand Marais Lakes
is less thaw, Bailly Station's pumpage, yet disruption of shore ice at Grand
Marais ic worse than at Bailly Station's flume.
rigure 15. An unidentified creek between New Buffalo and the Cook Plant,-e has melted almost through the basic shore ice structure. 17 March 1971.
Figure 16 is of shore ice destruction by an unidentified creek north of

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