Engineer: debris basin limits and swale bypass could reduce flood risk quickly
France & Civil engineer Lane Jensen told the council the debris basin has foundation seepage and an undersized auxiliary spillway; he recommended creating a swale to activate a north flood channel, debris screens, and rapid modeling to set elevations — work his team says can be done in days to weeks.
The full story
Lane Jensen of France & Civil reviewed the town's hydrology and said the debris basin and associated splitting structures are the critical control points for short-term flood abatement. He told the council that Utah Dam Safety had previously documented seepage and that the basin's auxiliary spillway would overtop at flows modestly above the 100-year event in a burned watershed.
Sign up to keep reading.
Your free newsletter brings you what your city council, county, and school board discussed and decided.