The annual Irrigation System Survey Report, which is published by the Wyoming Water Development Commission, provides a summary of information regarding 28 irrigation districts. These districts lie within a portion of what the Wyoming State Engineer's Office designates as Water Division I. Information regarding the irrigation districts within the Upper Laramie subbasin as listed in the 2003 Irrigation System Survey Report is represented in the following table.

Irrigation Districts	Surface source	Acres in district (total)	District acres irrigated	Number of users
Laramie Valley Irrigation District	Oasis ditch	8,636	8,636	15
Medicine Bow Conservation District	--	--	--	--
Pioneer Canal-Lake Hattie Irrigation District	Laramie River	19,000	17,000	58
Rock Creek Ditch Company	Rock Creek	8,294	8,214	7
Rock Creek Water Users Association	--	--	--	--
Toltec Watershed Improvement District	North Laramie River	1,754	1,754	6

Pioneer Canal – Lake Hattie Irrigation District

The Pioneer Canal was constructed in 1879 and enlarged both in 1884 and during the period 1909 to 1912. The Pioneer Canal diverts water from the Laramie River at a point about three miles downstream of Woods Landing, Wyoming and is about 32 miles long, terminating about three miles northwest of the City of Laramie. The canal provides water for irrigation of approximately 18,360 acres. This system is currently operated by the Pioneer-Lake Hattie Irrigation District, which was formed in 1988.

Below is a map of the Pioneer Canal - Lake Hattie Irrigation District. Click here to enlarge image, view legend, and to print