Our pond surface is covered with snow and ice. The ice got to be about 3 or 4 inches thick before the snow came. I had a pond heater that kept a hole open and then 27 inches of snow came and buried the heater. So I unplugged it. Then a few days later we had 12 more inches of snow. With 3 feet of snow I couldn't get to the pond. We couldn't even see an outline of the pond. The pond is about 10 by 20 feet and 18 to 24 inches deep. It will probably be 2 to 3 weeks before the pond will be clear of ice. There were 7 koi and about 15 gold fish. I wonder if the fish will be alive?