Sanborn
Sanborn is an earth dam located in Weld County, Colorado, built in 1890. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Sanborn
The primary purpose of Sanborn is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Sanborn Ditch Company (pete Salazar, President) (private). It impounds the St. Vrain Creek near Longmont.
The dam stands 16 feet tall and stretches 2,300 feet across, creates a reservoir covering 35 acres, has a maximum storage capacity of 284 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1890, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/14/2021.
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Location
| State | Colorado |
| County | Weld |
| Nearest City | Longmont |
| River/Stream | St. Vrain Creek |
| Coordinates | 40.19107, -105.00218 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 2,300 ft |
| Year Completed | 1890 (136 years old) |
Storage & Hydraulics
| NID Storage | 284 acre-ft |
| Max Storage | 284 acre-ft |
| Normal Storage | 214 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 640 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | SANBORN DITCH COMPANY (PETE SALAZAR, PRESIDENT) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/14/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO01238 |
| Federal ID | CO01238 |
| More Info | State Dam Safety Program |