Grand Coulee Dam
3W7 · Electric City, WA · Non-towered · Print kneeboard · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-18 · night begins 07:34 PM
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:06 AM | 13:06Z |
| Sunrise | 06:37 AM | 13:37Z |
| Sunset | 07:03 PM | 02:03Z |
| Evening civil twilight Loggable night begins | 07:34 PM | 02:34Z |
Plan a flight from 3W7
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
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Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
RWY 22RIGHT trafficRP · charted
- Heading
- 216° mag · 231° true
- Dimensions
- 4,203 × 75 ft
- TPA
- 2,600 ft MSL (≈1,000 AGL) · standard
- Surface
- Asphalt
- Lights
- 2-light PAPI (left) (4.2°)
- CTAF
- 122.9
Enter the right downwind (heading 036°) on the 45° at 2,600 ft MSL (≈1,000 AGL).
More details — RWY 22
- Threshold elev
- 1,589 ft
- Markings
- nonprecision
- Approach obstacle
- Gnd, 30 ft, 1,195 ft from threshold, 0 ft B of centerline — 33:1 slope to clear
- Threshold crossing height
- 53 ft
- TDZ elevation
- 1,593 ft
- End lights
- REIL
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 04/22 | 4,203 ft |
Prefer one flat page? Full runway details for 3W7 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 3W7 kneeboard →
Comms & NavAids
Communication frequencies
Before taxi
Taxi & takeoff
Also
By procedure & sector (1 frequencies)
| Frequency | Used by |
|---|---|
| 291.6 | MARLIN RCAG (LOW) |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
EPH 112.60
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| EPH · Ephrata | VORTAC | 112.60 · 73X | High | r002° / 35.5 NM |
Prefer one flat list? All 3W7 frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- 3W7
- Coordinates
- 47.9221, -119.0830
- Elevation
- 1,593 ft MSL
- Magnetic variation
- 15E
- Sectional chart
- SEATTLE
- Airport use
- Public
- Control tower
- No
- Weather station
- AWOS-3PT · 128.325 · ☎ 509-631-8955
- ARTCC
- SEATTLE (ZSE)
- Flight service (FSS)
- SEATTLE · 122.5 · 1-800-WX-BRIEF
- NOTAM facility
- SEA
- Attendance
- UNATNDD
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- Activated
- 1972/10
- Distance from city
- 2 SW
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT REIL RWY 22; PAPI RWY 22; MIRL RWY 04/22 - CTAF. on 122.9 — Chart Supplement ↗
Runway lighting aids — 22: 2-light PAPI (left).
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
- Parking
- tiedowns
Ownership & management 2 contacts
Remarks FAA · 5 notes
General
- GEESE & WILDLIFE INVOF RWY.
- FOR CD CTC SEATTLE ARTCC AT 253-351-3694.
Lighting
- ACTVT REIL RWY 22; PAPI RWY 22; MIRL RWY 04/22 - CTAF.
Obstructions
- 15 FT TREE 61 FT FM THR, 73 FT LEFT & DITCH 27 FT FM THR, 91 FT RIGHT.
- BRUSH 79 FT RIGHT; SLP & BRUSH 100 FT FM THR, 99 FT LEFT.
Nearby airports
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Also nearby: 2WA6 Rice Ranch (private) (5 NM) · 42WA Sheffels Ranch (private) (13 NM) · 2S8 Wilbur (17 NM) · WT32 Hart (private) (17 NM) · 8W3 Mansfield (23 NM) · S97 Anderson Field (28 NM)
About 3W7
Grand Coulee Dam (3W7) is an airport in Electric City, WA, at 1,593 ft MSL. It has 1 runway, the longest 4,203 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 3W7, refreshed from the Aviation Weather Center and FAA NASR.
Does 3W7 have a control tower?
No. Grand Coulee Dam is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 3W7?
Grand Coulee Dam has 1 runway; the longest is 4,203 ft. See the Runways section for headings, surface, and lighting.
Where is 3W7?
Grand Coulee Dam is in Electric City, WA, at an elevation of 1,593 ft MSL. Coordinates: 47.9221, -119.0830.
More about 3W7
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 3W7 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
Something here wrong or out of date? Report a data problem.