Itasigrook is an earth dam located in North Slope Borough, Alaska, built in 1964. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 13 ft13 ft tall and 1,700 ft long. 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 Itasigrook
The primary purpose of Itasigrook is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by North Slope Borough (local government). It impounds the Isatkoak Creek near Barrow.
The dam stands 13 feet tall and stretches 1,700 feet across, and has a maximum storage capacity of 1,300 acre-feet. Completed in 1964, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in 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 09/24/2015. That was over 11 years ago.
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Location
| State | Alaska |
| County | North Slope Borough |
| Nearest City | Barrow |
| River/Stream | Isatkoak Creek |
| Coordinates | 71.26667, -156.76660 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 6 ft |
| Dam Length | 1,700 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 1,300 acre-ft |
| Max Storage | 1,300 acre-ft |
| Normal Storage | 1,180 acre-ft |
| Max Discharge | 420 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | North Slope Borough |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/24/2015 |
| Emergency Action Plan | No |
Identifiers
| NID ID | AK00053 |
| Federal ID | AK00053 |
| More Info | State Dam Safety Program |