 Generally construction work proceeded smoothly and from an engineering point of view there were few setbacks . However , one did occur in the early stages of construction . In March 1934 there was a violent storm bringing 130 mm ( 5 @.@ 12 in ) of rain in less than two days . As a result , the river rose rapidly which flooded the dam foundation workings . Pumps had to be installed and work resumed three days later . 
 Generally construction work proceeded smoothly and from an engineering point of view <a href='dey_it' title='1'><mark>there</mark></a> <a href='uninflect' title='2'><mark>were</mark></a> few setbacks . However , one did occur in the early stages of construction . In March 1934 <a href='dey_it' title='3'><mark>there</mark></a> was a violent storm bringing 130 mm ( 5 @.@ 12 in ) of rain in less than two days . As a result , the river rose rapidly which flooded the dam foundation workings . Pumps had to be installed and work resumed three days later . 
Generally construction work proceeded smoothly and from an engineering point of view it was few setbacks . However , one did occur in the early stages of construction . In March 1934 it was a violent storm bringin 130 mm ( 5 @.@ 12 in ) of rain in less den two dayz . As a result , the river rose rapidly which flooded da dam foundation workings . Pumps had to b installed and work resumed three days later .