Rock Canyon E.c. #2

Rock Canyon E.c. #2 is an earth dam located in Arapahoe County, Colorado, built in 1973. It carries a Low hazard potential classification.

Hazard potentialLowFailure would cause limited damage
ConditionNot assessed
Emergency action planNot reported
Last inspection11/17/2020
Height25 ft
Built197353 years ago

Dam profile

NID height · 25 ft
25 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

25 ft tall and 460 ft long, taller than 50% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.

About Rock Canyon E.c. #2

The primary purpose of Rock Canyon E.c. #2 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Thomas H. Bradbury (private). It impounds the Bijou Creek-tr near Byers.

The dam stands 25 feet tall and stretches 460 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 50 acre-feet. Completed in 1973, the structure is well into its service life at over 50 years old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 11/17/2020.

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Location

StateColorado
CountyArapahoe
Nearest CityByers
River/StreamBijou Creek-tr
Coordinates39.68333, -104.27057

Physical Characteristics

Dam TypeEarth
NID Height25 ft
Dam Height20 ft
Dam Length460 ft
Year Completed1973 (53 years old)

Storage & Hydraulics

NID Storage50 acre-ft
Max Storage50 acre-ft
Normal Storage29 acre-ft
Surface Area4 acres
Max Discharge1,800 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerThomas H. Bradbury
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot assessed
Last Inspection11/17/2020
Emergency Action PlanNot Required

Identifiers

NID IDCO00114
Federal IDCO00114
More InfoState Dam Safety Program