WA09 · Roche Harbor Airport

ROCHE HARBOR, WASHINGTON · SMALL AIRPORT · SCHEDULED SERVICE

100

Elevation ft

Runways

4,300

Longest ft · 06/24

48.61N

123.14W

Roche Harbor Airport serves Roche Harbor, Washington at 100 ft elevation with its longest runway, 06/24, at 4,300 by 35 ft. The figures below are computed from FAA NASR runway data (via OurAirports) and the same rules of thumb JetDesk uses on the airport page in the app; the POH and current NOTAMs are the authority.

Private-use airfield. The FAA file marks this field private use. It is listed here for reference. Landing needs the owner's prior permission, and there may be no fuel or services. Do not plan it as a fuel stop or a routine alternate.

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01Runways

Runway	Length × width	Surface	Lighting
06/24	4,300 × 35 ft	asphalt	lit
07/25	3,593 × 30 ft	asphalt (fair)	unlit

02Density altitude and turboprop runway margins

Standard temperature at 100 ft is about 15°C. Every 1,000 ft of density altitude adds roughly 8 percent to a turboprop's takeoff distance and 5 percent to its landing distance. The table uses Piper Meridian book numbers (2,438 ft takeoff and 2,110 ft landing over a 50 ft obstacle at sea level, ISA, max weight) as a reference airplane; heavier turboprops and light jets scale the same way from their own POH figures.

Conditions	Density altitude	Takeoff est.	Landing est.	Landing × 1.5
Standard day (ISA, 15°C)	100 ft	2,458 ft	2,121 ft	3,181 ft
Warm day (ISA +10)	1,300 ft	2,692 ft	2,247 ft	3,371 ft
Hot day (ISA +20)	2,500 ft	2,926 ft	2,374 ft	3,561 ft
35°C afternoon	2,524 ft	2,930 ft	2,376 ft	3,564 ft

Planning aid only. Even on a 35°C afternoon the longest runway (06/24, 4,300 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,564 ft needed). The percentages are a generic rule of thumb applied to one reference airplane, not certified performance data for any specific aircraft, and the runway size categories describe the runway, not your airplane's suitability. Verify with the approved flight manual before every flight.

03Nearby fields with 5,000 ft or more

Listed for reference only: WA09 is not a field to divert to or buy fuel at.

Airport	Distance	Longest runway
KBLI Bellingham International Airport	26 nm NE	6,700 ft
KBVS Skagit Regional Airport	30 nm E	5,480 ft
KCLM William R Fairchild International Airport	33 nm SW	6,347 ft
KAWO Arlington Municipal Airport	48 nm SE	5,332 ft

04Fuel and services at WA09

There is no public FBO fuel to log at WA09. JetDesk collects Jet A prices that pilots actually paid, at civil fields, and its route finder leaves military and private-use fields out of every ranking. Read what a fuel stop actually saves.

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