Highland Ditch Flume Emergency Repair & Slope Stabilization

Truckee Meadows Water Authority

ANDREGG GEOMATICS responded to Truckee Meadows Water Authority’s (TMWA) emergency request to provide topographic design surveys for the repair project of the Highland Ditch flume.

A 200-foot-long section of the Highland Ditch flume in Mogul, Nevada (Reno) was destroyed by the rockslide that was triggered by the 4.7 magnitude earthquake. 

The Highland Ditch is the largest source of water to the Chalk Bluff treatment plant, the utility’s most important.  The damage came at a time the area was approaching its peak summer months for water demand. ANDREGGg employed High Definition Surveying methods using Leica Geosystems HDS laser scanning system accompanied and controlled by Trimble S6 total station and GPS Surveys to complete the horizontal and vertical control network and topographic designs surveys of the destruction area.  ANDREGG provided a digital terrain model and 3-Dimentional models to assist TMWA engineers to calculate volume of debris, earthwork for the repair area and to assist in the design or the proposed repair.