Lake Emily Dam

Geotechnical investigation to raise an existing 35 ft high, earth-fill dam, upgrade for seismic stability and install a new inflatable spillway gate. Blackburn Consulting’s services included site investigations, design input with DSOD and construction testing/mapping.  The dam is located less than one mile from the active Maacama Fault Zone and contains an active landslide at the left abutment. Project geotechnical considerations included materials strengths, groundwater, seismic design, slope stability and liquefaction evaluation.



Location Willits, CA
Agency/Owner Brooktrails Community Service District
Timeframe 2006 - 2009