Spring runoff caused a problem with the Iola dam in early April.
Too much water caused a washout underneath the manhole located near the discharge to the river, according to Iola Lake District representative Jerry Harvancik.
He presented the report to the Iola Village Board at its April 8 meeting.
“We repaired a cave-in today by pouring four feet of concrete,” Harvancik said. “Had we had the valve in there, it wouldn’t have caved in.”
He noted the lake refill has been delayed until the manhole valve is installed.
According to Harvancik, May 9 is the absolute latest date to begin refilling Lake Iola. The lake district was granted this extension by the Wisconsin Department of Natural Resources.
“We may need to let more water out (prior to the valve installation), depending on how much moisture we get,” he said.
In other business, the village board discussed the upcoming road project for State Highways 49 and 161. Construction is scheduled for April 29 through May 29.
An informational meeting on the road project will be held at 7 p.m. on Monday, April 22, at the Iola Community Center.