Garrison Dam Recreational Airpark
37N · Riverdale, ND · 1,723 ft elevation · var 10E · Non-towered
Airport information
- FAA LID
- 37N
- Coordinates
- 47.4831, -101.4090
- Elevation
- 1,723 ft MSL
- Magnetic variation
- 10E
- Sectional chart
- BILLINGS
- Airport use
- Public
- Control tower
- No
- ARTCC
- MINNEAPOLIS (ZMP)
- Flight service (FSS)
- GRAND FORKS · 1-800-WX-BRIEF
- NOTAM facility
- GFK
- Attendance
- UNATNDD
- Segmented circle
- Yes
- Wind indicator
- yes
- Activated
- 1984/11
- Distance from city
- 1 SW
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-22
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:08 AM | 10:08Z |
| Sunrise | 05:49 AM | 10:49Z |
| Sunset | 09:47 PM | 02:47Z |
| Evening civil twilight Loggable night begins | 10:27 PM | 03:27Z |
Plan a flight from 37N
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 11 · 112°
- Pattern
- right (turns right)
- TPA
- 2,700 ft MSL (≈1,000 AGL)
- CTAF
- 122.9
Enter the right downwind for Rwy 11 at 2,700 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 11/29
3,195 ft × 60 ft · TURF-GRVL (Fair)- Heading
- 112° mag · 122° true
- Threshold elev
- 1,719 ft
- Markings
- nonstandard
- Traffic pattern
- Right
- Approach obstacle
- Trees, 50 ft, 625 ft from threshold, 100 ft L/R of centerline — 12:1 slope to clear · penetrates the 20:1 visual approach surface
- Heading
- 292° mag · 302° true
- Threshold elev
- 1,704 ft
- Markings
- nonstandard
- Traffic pattern
- Left
- Approach obstacle
- Trees, 35 ft, 600 ft from threshold, 155 ft L of centerline — 17:1 slope to clear · penetrates the 20:1 visual approach surface
| Runway | Length | Your margin |
|---|---|---|
| 11/29 | 3,195 ft |
Communication frequencies
Tower & ground
| CTAF | 122.9 |
Source: FAA NASR (current 28-day cycle).
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Parking
- tiedowns
Ownership & management
Remarks FAA
- ARPT CLSD OCT-MAY; ARPT SFCS SOFT WHEN WET. NO SNOW REMOVAL AVBL.
- RY 11 -30 FT DROP OFF 450 FT FM THLD.
- DEER & BIRDS ON & INVOF ARPT.
- RY 29 -5 FT DROP OFF 420 FT FM THLD.
- RY 11/29 +15 FT DIRT TRAIL 40 FT FM CNTRLN ON N SIDE OF RY 500 FT INBOUND RY 11 THLD.
- FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.
- DIRECTOR OF NORTH DAKOTA AERONAUTICS COMMISSION
- LAND LEASED BY ND AERO CMSN, PO BOX 5020, BISMARCK, ND 58502.
- PHONE ATTENDANCE AVBL MON-FRI 0800-1700. AFT HRS CELL 701-425-5926 OR 701-955-8280.
- PHONE OF THE LOCAL CORPS OF ENGRS, RIVERDALE DIST OFC.
- SFC LMTD TO USE ONLY BY ACFT GWT UNDER 4000 LBS.
- 400' DIRT/GRAVEL STWY BOTH ENDS.
- RWY 11/29 NSTD MKGS; EDGES & THLDS MKD WITH BLACK/WHITE CONES.
- +3' HILL 500' FM RY END 100' R OF EXTDD CL.
- -3' ROAD 463' FM RY END ON EXTDD RY CL.
- NUMEROUS SMALL GRAVEL/ROCKS ON SFC.
Nearby airports
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 37N 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.
About 37N
Garrison Dam Recreational Airpark (37N) is an airport in Riverdale, ND, at 1,723 ft MSL. It has 1 runway, the longest 3,195 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 37N, refreshed from the Aviation Weather Center and FAA NASR.
Does 37N have a control tower?
No. Garrison Dam Recreational Airpark is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at 37N?
Garrison Dam Recreational Airpark has 1 runway; the longest is 3,195 ft. See the Runways tab for headings, surface, and lighting.
Where is 37N?
Garrison Dam Recreational Airpark is in Riverdale, ND, at an elevation of 1,723 ft MSL. Coordinates: 47.4831, -101.4090.
Fly out of 37N often?
Save 37N as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.