Box I #1
Box I #1 is an earth dam located in Larimer County, Colorado, built in 1967. It carries a Low hazard potential classification.
About Box I #1
The primary purpose of Box I #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Ted Swanson (private). It impounds the Boxelder Cr-tr near Wellington.
The dam stands 19 feet tall and stretches 2,300 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 200 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1967, 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 09/10/2015. That was over 10 years ago.
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Location
| State | Colorado |
| County | Larimer |
| Nearest City | Wellington |
| River/Stream | Boxelder Cr-tr |
| Coordinates | 40.79500, -105.06390 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 18 ft |
| Dam Length | 2,300 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 108 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 2,354 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | TED SWANSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 09/10/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00125 |
| Federal ID | CO00125 |
| More Info | State Dam Safety Program |