An engineering firm has concluded that the break in the Murdock Canal occurred because of animal burrows and was triggered by an unusual flow of high water, Lindon Mayor Kenneth McMillan said Wednesday.

A report from the Northern Engineering and Testing Co. suggests that a rodent control program be implemented. If that is not feasible, a concrete or manufactured lining should be considered for the canal.The engineers also recommended that the owners and operators of the canal, the Provo River Water Users Association, continue to monitor wells from March through November next year to watch the groundwater table.

The report says that "existing inspection and maintenance procedures should be carefully evaluated, and the removal of the threat of future canal failures would best be accomplished by a lining system of concrete or other rodent-proof manufactured material."

The company is an engineering firm that is part of a committee organized by McMillan to determine why the canal broke and what other canal areas are in danger of breaking. The committee is made up of a soil scientist and engineer from the engineering firm, two geologists, a canal operator and a resident of the damaged neighborhood.

The engineering firm is the first body of the committee to submit a finished report.

The report says the canal failure did not result from sliding or unstable canal bank slopes and was not caused by an unusually high pressure on the soil beneath the canal due to increased drainage.

A copy of the report was sent to the water users association.