Arrowhead
Arrowhead is an earth dam located in Weld County, Colorado, built in 1962. It carries a Low hazard potential classification.
About Arrowhead
The primary purpose of Arrowhead is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Lake Arrowhead Water Association, Inc. (dwight L. (private). It impounds the Ashcroft Draw near La Salle.
The dam stands 38 feet tall and stretches 1,480 feet across, creates a reservoir covering 21 acres, has a maximum storage capacity of 365 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1962, 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 06/02/2015. That was over 10 years ago.
At 38 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Colorado |
| County | Weld |
| Nearest City | La Salle |
| River/Stream | Ashcroft Draw |
| Coordinates | 40.37479, -104.75686 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 30 ft |
| Dam Length | 1,480 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 365 acre-ft |
| Max Storage | 365 acre-ft |
| Normal Storage | 148 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 920 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | LAKE ARROWHEAD WATER ASSOCIATION, INC. (DWIGHT L. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 06/02/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00734 |
| Federal ID | CO00734 |
| More Info | State Dam Safety Program |