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Ice dam creates threat in Twisp

TWISP, Wash. — Okanogan County emergency officials may make another attempt to blow up an ice dam on Poorman Creek near Twisp.

The county’s emergency manager, Scott Miller, says if the dam continues to back up water and then suddenly bursts it could cause flooding about four miles downstream in Twisp.

Three attempts to blast a channel through the ice blocks Monday only cracked the dam, which is about 15 feet deep and 75 feet across. Some water is flowing around the sides of the dam on farm land.

Miller says officials will re-evaluate the dam Wednesday and decide whether to make another attempt to remove it with heavy equipment or more explosives.