Poison Spring is an earth dam located in Montrose County, Colorado, built in 1952. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 32 ft32 ft tall and 520 ft long, taller than 74% 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 Poison Spring
The primary purpose of Poison Spring 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 Ljh Black Canyon, LLC (private). It impounds the Gunnison River-tr near Crawford.
The dam stands 32 feet tall and stretches 520 feet across, creates a reservoir covering 10 acres, and has a maximum storage capacity of 202 acre-feet. Completed in 1952, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 07/05/2022.
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Location
| State | Colorado |
| County | Montrose |
| Nearest City | Crawford |
| River/Stream | Gunnison River-tr |
| Coordinates | 38.59000, -107.63390 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 520 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 202 acre-ft |
| Max Storage | 202 acre-ft |
| Normal Storage | 110 acre-ft |
| Surface Area | 10 acres |
| Max Discharge | 882 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Ljh Black Canyon, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 07/05/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00615 |
| Federal ID | CO00615 |
| More Info | State Dam Safety Program |