Watershed
The Shell Creek watershed consists of 370,500 acres (1,499 km2) of native rangeland (73%), forest (24%), irrigated cropland, pasture and hayland (3%). There are over 10,500 acres (42 km2) of irrigated lands in the Shell Creek watershed; the greater part (92%) of which is in the lower portion-downstream from the town of Shell. About 7,500 acres (30 km2) are irrigated from Shell Creek itself. Also, the part of the creek is diverted above Shell and conveyed via pipeline to the town of Greybull as a municipal water supply.
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