The Bureau of Reclamation is refilling the Upper Stillwater Dam following completion of a $1.5 million project to cover sand piles blamed for discoloring the reservoir and Rock Creek.

The reservoir was drained last fall and sand piles left behind following construction of the dam were capped with cement, said bureau spokesman Barry Wirth."Also, while the reservoir was drawn down, other minor corrective work to the future boat ramp site and the Forest Service trail adjacent to the reservoir was completed," Wirth said.

While the northeastern Utah dam near Duchesne is refilling, he said, downstream flows in Rock Creek will be kept high enough "to support the trout fishery."

"Some discoloration of the reservoir water is still expected this year," Wirth said. "While the sand piles are covered, there remains a certain amount of natural sand on the reservoir bottom which will be disturbed while the reservoir fills. It will take a period of time for that sand to settle out."