KDNS Denison Muni

UNKNOWN

Unknown — not enough evidence to call a runway

We don't know, and saying so beats guessing. No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. No ADS-B traffic data available. Weather observation is 7197 minutes old — treat with caution. Wind calm — no directional preference.

certainty: — evidence: NONE no tower now

Wind calm · VFR · 7197 min old

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30 37% 5000 ft · calm-wind rwy

12 22% 5000 ft

18 20% 3200 ft

36 20% 3200 ft

Why — evidence behind this answer

Runway 30

PRIOR 30 is the designated calm-wind runway +0.50
PRIOR runway length 5000 ft +0.04

Runway 12

PRIOR runway length 5000 ft +0.04

Runway 18

PRIOR runway length 3200 ft -0.04

Runway 36

PRIOR runway length 3200 ft -0.04

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	7197 min
ADSB	UNAVAILABLE		No ADS-B track history here yet
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

No operations observed in the last hour. (No ADS-B track history here yet)

Was this right?

KDNS field & runways

Denison Muni, Denison, Iowa. Field elevation 1274 ft. Non-towered (NON-ATCT). Magnetic variation 4.0°E on record, 1.6°E today.

The FAA's variation of record is the number this field was surveyed against; the second is where north points now, from WMM2025. It is moving 0.06°/year west — about 1° every 17 years — which is why runway numbers eventually stop matching their pavement.

Runway data from the FAA NASR 01 Oct 2026 cycle. Where NASR locates both thresholds, the true heading is the bearing between them rather than NASR's whole-degree alignment. Magnetic is that heading against *today's* declination from WMM2025, not the field's variation of record — so it can differ from the chart by the gap between the two shown above. The number painted on the runway is the one ATC uses.
Runway	True	Magnetic	Number	Length	Surface	Pattern	Notes
12	124.4°	122.8°	matches rule gives runway 13 in ~36 yr	5,000 ft	CONC	left
18	179.3°	177.7°	matches	3,200 ft	TURF	left
30	304.4°	302.8°	matches rule gives runway 31 in ~36 yr	5,000 ft	CONC	left	calm-wind RWY 30 IS CALM WIND RWY.
36	359.3°	357.7°	matches	3,200 ft	TURF	left

Generated 11:32:09Z · auto-refreshes · JSON

KDNS ☆ Denison Muni