In the first two years they designed the dams of the Pequannock watershed in the Pequannock River .
In 1890 Waldo joined E. Jersey Water Company , where he became assistant of Clemens Herschel .
In the first two years E. Jersey Water Company designed the dams of the Pequannock watershed in the Pequannock River .
In 1890 Waldo joined E. Jersey Water Company , where he became assistant of Clemens Herschel .