The diameter varied due to the different material mined through and the erosion of almost 90 years of water flow.
The Hydro-electric power-plant was erected on the west bank of the Cache-la-Poudre, nearly opposite the eastern portal.
[4] There were about 60 people employed with skills ranging from helpers, muckers, mechanics, stable-helpers, blacksmiths, book keeper and foremen.
[5] Court battles between Colorado and Wyoming over water rights prevented operation until 1914 (Case 1995).
Agriculture users typically use about 450,000 acre ft and municipal users use a further 75,000 acre ft in the Cache La Poudre drainage basin.