Mountain Lake Hydrogeology Research Fall 2011

Mountain Lake at full water level. Courtesy Mountain Lake Hotel.

Air photo of dry lake bed with streams flowing toward drain holes in deep end.

Ben Perdue dragging the OhmMapper array under Dr. Herman's watchful eye as part of subsurface resistivity survey.

Degraded mudcracks on a higher drier part of the lake bed.

Tanner Vaughn taking his turn at surveying with the OhmMapper array to image the subsurface.

Ben, Tanner, & Dr. Herman setting up the OhmMapper to survey subsurface transitions between the colluvium & lake sediments.

Second of two sunken boats, exposed by the receding lake water.

Ken Holmes rappelling over colluvium down to drain hole #2 to set cable for Sting array.

VT graduate student Luke Joyce directs Jenny All in proper placement of electrodes for his resistivity study.

Jenny All rappelling over colluvium at southeast end of drain hole #2 to set cable for Sting array.

Jim Freeman and Jenny All setting cable for Sting array at drain hole #2.

Jim Freeman ready to adjust cable for Sting array at drain hole #1.

Jordan Kime & Tanner Vaughn performing SONAR survey near drain hole #1 prior to complete lake recession.

Water levels during lake recession on Oct. 21, 2011.

SONAR survey prior to complete lake recession.

SONAR survey prior to complete lake recession.

Bathymetric map from SONAR survey conducted on Aug. 17, 2011.

Closeup of bathymetric map from SONAR survey conducted on Aug. 17, 2011.

Oblique view of bathymetric map from SONAR survey conducted on Aug. 17, 2011.

Side scanning SONAR image overlain on bathymetric map from survey conducted on Aug. 17, 2011. Note underwater landslide blocks & submerged boat.