Cache is located along the Granby Pump Canal which was constructed in 1949-50. Granby Pumping Plant lifts the water 125 feet from Lake Granby to the canal. The water flows 1.8 miles to Shadow Mountain Lake, which also intercepts North Fork flows of the Colorado River. Shadow Mountain Lake connects with Grand Lake to make a single body of water from which diversions flow to the Alva B. Adams Tunnel to begin the journey to the Eastern slope over the Continential Divide and flowing in to Estes Park, CO, and resevoirs along the foothills. Brown and Rainbow Trout, Kokanee Salmon, or a stray Lake Trout can be caught in the canal, especially when they are pumping. The Osprey or Bald Eagles may join you while you are fishing. You can also hike, or ride your bike the 1.8 mile length of the canal and view Lake Granby from where the water enters the canal, or empties in to Shadow Mountain Lake.