It takes about 1 million gallons to build a mile of ice road, according to ConocoPhillips. (via AlaskaBeacon)
August 29, 2022
In lakes with fish that are considered resistant to low-water conditions, like stickleback and blackfish, up to 30% of below-ice water may be withdrawn. For lakes with fish that are considered sensitive, like whitefish and grayling, the below-ice water limit is 15%, Brooks said. After a single dry summer, according to the study, lakes will need three successive years of snowmelt to be replenished if water is withdrawn in volumes allowed in current regulations. Such water use after a dry summer will lead to intermittently dry streams for the following three years, the study said.
“The problem is the water withdrawals occur in the winter and the drought conditions would occur in the following summer,” said Arp, who is with UAF’s . If there is a dry summer, “it would be a very good idea for managers to not permit as much water withdrawal in the following winter.” An ongoing research project is testing DNA found in lake water sampled in the spring to try to better understand overwintering fish distributions, he said.
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