Mcknight #1

Mcknight #1 is an earth dam located in Carter County, Montana, built in 1951. It carries a Low hazard potential classification.

Hazard potentialLowFailure would cause limited damage
ConditionNot assessed
Emergency action planNot reported
Last inspectionNot reported
Height25 ft
Built195175 years ago

Dam profile

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

25 ft tall and 200 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 Mcknight #1

The primary purpose of Mcknight #1 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Cache Valley Ranch (private). It impounds the Tr-hay Creek near Capitol Nd.

The dam stands 25 feet tall and stretches 200 feet across, has a maximum storage capacity of 43 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1951, 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.

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Location

StateMontana
CountyCarter
Nearest CityCapitol Nd
River/StreamTr-hay Creek
Coordinates45.31190, -104.43620

Physical Characteristics

Dam TypeEarth
NID Height25 ft
Dam Height25 ft
Dam Length200 ft
Year Completed1951 (75 years old)

Storage & Hydraulics

NID Storage43 acre-ft
Max Storage43 acre-ft
Normal Storage29 acre-ft
Drainage Area0 sq mi
Max Discharge1,000 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerCache Valley Ranch
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot assessed
Emergency Action PlanNot Required

Identifiers

NID IDMT02401
Federal IDMT02401
More InfoState Dam Safety Program