70 Ranch is an earth dam located in Weld County, Colorado, built in 2019. It carries a Low hazard potential classification.
Dam profile
NID height · 50 ft50 ft tall and 8,200 ft long, taller than 92% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About 70 Ranch
The primary purpose of 70 Ranch is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by United Water and Sanitation District (damiano, Dre (private). It impounds the Off-stream near Orchard.
The dam stands 50 feet tall and stretches 8,200 feet across, creates a reservoir covering 167 acres, has a maximum storage capacity of 5,990 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 2019, the structure is relatively new.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 08/16/2019.
At 50 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Colorado |
| County | Weld |
| Nearest City | Orchard |
| River/Stream | Off-stream |
| Coordinates | 40.34157, -104.42338 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 50 ft |
| Dam Height | 47 ft |
| Dam Length | 8,200 ft |
| Year Completed | 2019 (7 years old) |
Storage & Hydraulics
| NID Storage | 5,990 acre-ft |
| Max Storage | 5,990 acre-ft |
| Normal Storage | 5,496 acre-ft |
| Surface Area | 167 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 688 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | United Water and Sanitation District (damiano, Dre |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/16/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO03022 |
| Federal ID | CO03022 |
| More Info | State Dam Safety Program |