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Stampede Dam is located on the Little Truckee River, approximately 10 miles northeast of Truckee, California. 

Phase:  Corrective Action Study

Background:  Risk analyses for seismic, hydrologic and static failure modes were conducted between May 2003 and January 2004.  They concluded that Stampede Dam does not meet Reclamation dam safety guidelines for both hydrologic and seismic failure modes.  However, it was recognized that the potential seismic dam safety issues were based on limited data, and that additional Issue Evaluation studies and investigations were needed to further analyze and re-assess the risks of an earthquake-induced or static failure. 

Status:  Geologic investigations and analyses conducted in 2004 and 2005 have revealed that the dam’s foundation materials are much stronger than previously thought.  Consequently, the possibility of a seismic induced failure is extremely remote.  It was also concluded that a seepage (static) failure is also extremely unlikely. 

Although there is still justification to pursue corrective actions for hydrologic reasons, the project has been temporarily suspended pending additional investigations at Boca Dam, which is located downstream.  This project would likely be re-started during January 2009.