- Airport Identifier
- 20WI
- Airport Name
- Harju Airport
- Location
- Redgranite, United States
- Field elevation (ft)
- 800 ft
- Airport Type
- Small airport
- Magnetic Variation
- 2.903° E
- Coordinates
- 44.0214004516602° N 89.0792999267578° W
| Runway Name | Runway Length | Displaced Threshold (ft) | Runway Heading (°T) | Runway Heading (°M) | Slope | Surface |
|---|---|---|---|---|---|---|
| NW | 1,800 ft x 40 ft | N/A | Unknown | Unknown | Unknown | Grass |
| SE | 1,800 ft x 40 ft | N/A | Unknown | Unknown | Unknown | Grass |