Project scope
The unit's principal physical works are Bonny Dam and Reservoir. The dam is described as a modified homogeneous earthfill structure 158 feet above its foundation, with 8,853,000 cubic yards of embankment material. Its works include an uncontrolled, concrete-lined spillway chute in the left abutment; a sluiceway below the spillway crest, partly controlled by a 16.5-by-10.75-foot fixed-wheel gate; and outlet works with a 56-inch steel pipe, a 40-inch branch installed for future use, and a 32-inch branch across the downstream face. The stated maximum spillway capacity is 73,300 cubic feet per second; the sluiceway was designed to discharge 10,000 cubic feet per second at elevation 3710.0 feet. A Hale Ditch outlet pipe is integral to the outlet works. Reservoir capacity is stated as 170,160 acre-feet below the spillway crest at elevation 3710.0 feet. Bonny Dam construction began December 8, 1948, and was completed May 4, 1951.
Reported status and procurement
- Reported development
The profile describes Bonny Dam as providing flood control, including protection of the lower South Fork of the Republican River Valley, and the reservoir and surrounding lands as supporting outdoor recreation. It also describes regulation of the existing water supply to Hale Ditch, which serves 750 acres, 400 of them State-owned; a separate 32-inch branch serves 750 acres of non-project land south of the river.
- Procurement availability
- Unknown / not established
Reported regulatory context
The unit is reported as authorized by the Flood Control Acts of December 22, 1944, and July 24, 1946. Public Law 88-442, enacted August 14, 1964, required reauthorization of the irrigation portion. Investigations of that phase began in December 1969 and concluded that an economically feasible plan for Federal development could not be formulated within the 24,000-acre upland area investigated.
A source report alone does not establish current progress or an open buying window.
Project summary
Armel Unit, formerly called the St. Francis Unit, is in eastern Colorado on the South Fork of the Republican River. Bonny Dam and Reservoir are identified as the unit’s principal feature. The profile describes flood-control, recreation, fish and wildlife, and water-supply functions, including service to Hale Ditch and a separate outlet branch serving non-project land.
The profile records Bonny Dam construction as beginning December 8, 1948, and being completed May 4, 1951. It also reports that investigations found no economically feasible plan for Federal irrigation development within the investigated 24,000-acre upland area.
Evidence limits and unknowns
The supplied profile text gives no publication or update date and does not establish the facilities’ present condition or whether the reported operating and administrative arrangements remain current.
The captured profile does not state current construction activity, a contractor, project cost, financing, procurement status, or a future milestone.
The linked Armel Unit Project History PDF and related facility information were not reviewed.
