Person adding sandbag to control structure with sledge
Person taking stream samples
Person taking stream samples
Man lying on ground with bag
Two men with equipment near streambed
Five people with equipment
Two people with eqiuipment
Five people with equipment
Three people with scuba equipment near ice hole
Three people with scuba equipment near ice hole
Three people with scuba equipment near ice hole
Two people with scuba equipment near ice hole
Two people with scuba equipment near ice hole
Two people with scuba equipment near ice hole
Two people with scuba equipment near ice hole
Man looking into camera
Three men with scuba equipment near ice hole
Three people operating pully over ice hole
Three people operating pully over ice hole
Two people operating pully over ice hole
Three people operating pully over ice hole
Person near control structure and gauge box
Two people stand outside biology lab
Person conducting survey
Man adjusting control structure on stream
Four people fill sandbags near streambed
Man adjusting control structure on stream
Man with dishes in hut
Five people with equipment near control structure
Man working at lab bench