Eastdale #2 is an earth dam located in Costilla County, Colorado, built in 1909. It carries a Low hazard potential classification.
Dam profile
NID height · 32 ft32 ft tall and 3,913 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 Eastdale #2
The primary purpose of Eastdale #2 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Eastdale Mutual Ditch & Reservoir (dean Swift) (private). It impounds the Costilla Creek-tr near Arroya Hondo, Nm.
The dam stands 32 feet tall and stretches 3,913 feet across, creates a reservoir covering 357 acres, has a maximum storage capacity of 5,540 acre-feet, and collects water from a drainage area of 15 square miles. Completed in 1909, the structure is over a century 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 10/25/2021.
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Location
| State | Colorado |
| County | Costilla |
| Nearest City | Arroya Hondo, Nm |
| River/Stream | Costilla Creek-tr |
| Coordinates | 37.06779, -105.56612 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 3,913 ft |
| Year Completed | 1909 (117 years old) |
Storage & Hydraulics
| NID Storage | 5,540 acre-ft |
| Max Storage | 5,540 acre-ft |
| Normal Storage | 3,041 acre-ft |
| Surface Area | 357 acres |
| Drainage Area | 15 sq mi |
| Max Discharge | 5,700 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Eastdale Mutual Ditch & Reservoir (dean Swift) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/25/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO01901 |
| Federal ID | CO01901 |
| More Info | State Dam Safety Program |