Building Water Pressure.
The term "hydraulic mining" refers to the use of powerful streams of water to free gold bearing deposits. After traveling for eight miles from the intake on Dukes Creek, the waters of the Hamby Ditch entered the Helen valley through Whitehorse Gap where they had attained an elevation several hundred feet above the valley floor. Along these lower reaches of the ditch, pipes were run down the mountain to build water pressure.
Continue the tour: Go to "Hydraulic Mining"