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

LEGENDS FOR COLOR PHOTOS, SECTION D

Fig. 1. The conditions of ice and the thermal plume of Consumers Power Company's Big Rock Nuclear Station on 18 February 1971. Shore ice ridges
reach up to, and into, the discharge channel.
Fig. 2. The two outfalls of the Traverse City, Michigan, Generating Station.
At the right in front of generating station is the melt-hole of the
plant's submerged outfall. Shore ice ridges are evident alongshore
behind the melt-hole of the submerged outfall. 18 February 1971.
Fig. 3. The melt-hole of the submerged outfall of the DuPont Chemical Company
at Montague, Michigan. The small melt-hole is visible in the middle
three-quarters distance between the basic shore ice structure and an
outlying ice barrier. 18 February 1971.
Fig. 4. A distant view of the complete plume from Consumers Power Company's
Campbell Plant at Port Sheldon, Michigan. The slightly steaming plume
has melted the adjacent shore ice, but the shore shows no evidence of
erosion. At least three wading fishermen are visible in the plume.
24 February 1971.
Fig. 5, A south-to-north panorama of the plume of the Campbell Plant on 10
6, March. A heavy ridge of ice lies completely around the Campbell plume.
and 7. Ten fishermen are present within the plume in the three photographs.
10 March 1971.
Fig. 8. The discharge channel of Consumers Power Company's Palisades Plant near
South Haven, Michigan. The two inshore ridges of the icefoot reach up
to the discharge flume structures. The frozen lagoon and outer barrier
ice ridge are disrupted by the water-flow (with no heat) from the
plant. 24 February 1971.
Fig. 9. A distant view of Northern Indiana Public Service Company's Michigan
City generating station. The plant's discharge channel is at the right
middle distance, and has ice on both sides of it. 17 March 1971.
Fig. 10. Ice conditions in Michigan City harbor, looking eastward on 10 March
1971. Ice-coated riprap and sheet piles show along the front right
side of the picture, but in the right three-quarters distance there is
a heavy curving vertical-faced rampart of shore ice within the enclosed
harbor.
Fig. 11. The plume from the Michigan City generating station, as visible in the
floe ice of the harbor; the plume enters from the left foreground. 10
March 1971.
Fig. 12. Shore ice conditions at NIPSCO's Bailly Station on 17 March 1971.
Shore ice reaches up to both sides of the plant's iron-sheet discharge
flume. The plant's circular stone intake structure lies offshore at
the edge of blue water, and a visible plume of blue water emerges from
the discharge flume.

36