Bijou Creek is a 45.5-mile-long (73.2 km)[2] tributary of the South Platte River in Colorado.

The creek flows northeast from elevated terrain in southeastern Adams County to a confluence with the South Platte near Fort Morgan.

[4][5] The alluvium that irrigators in the lower Bijou Basin drew water from since 1935 when the first wells were dug is deposited in a shallow channel eroded in Pierre Shale which is flanked on its sides by the Fox Hills Formation.

[6] It was estimated, in a CSU study, that about 1 million acre-feet of ground water was present in the alluvium as of 1948.

At a depletion rate of 70,000 acre-feet per year, the supply was forecast to eventually be exhausted by irrigators.