Grand Coulee Dam Airport
3W7 has 1 runway. The longest is 3/21 at 4,199 ft × 75 ft (asphalt).
FAA NASR data, cycle 2026-09-03
3W7 field elevation is 1,588 ft MSL. The standard traffic pattern altitude at 3W7 is 2,590 ft MSL (1,000 ft AGL).
FAA NASR data, cycle 2026-09-03
CTAF 122.9 MHz — 3W7 is non-towered; self-announce position and intentions on CTAF.
Check 3W7 against your personal minimums, plan a route to it, and see the best runway for the current wind — free.
No, 3W7 is a non-towered airport. The CTAF frequency is 122.9 MHz.
3W7 has 1 runway (3/21). The longest runway is 4,199 feet.
3W7 uses the standard traffic pattern altitude of 1,000 feet AGL — about 2,590 feet MSL at a field elevation of 1,588 feet.
3W7 (Grand Coulee Dam Airport) has a field elevation of 1,588 feet MSL.
3W7 (Grand Coulee Dam Airport) is located in Electric City, WA.