Watertown Regional Airport
ATY · KATY · Watertown, SD · 1,749 ft elevation · var 6E · Non-towered
Airport information
- ICAO / IATA
- KATY / ATY
- Coordinates
- 44.9140, -97.1547
- Elevation
- 1,749 ft MSL
- Magnetic variation
- 6E
- Sectional chart
- TWIN CITIES
- Airport use
- Public
- Control tower
- No
- Airspace
- Class E
- Weather station
- ASOS · 126.625 · ☎ 605-882-0578
- ARTCC
- MINNEAPOLIS (ZMP)
- Flight service (FSS)
- HURON
- NOTAM facility
- ATY
- Attendance
- ALL 0430-2030
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- FAR 139 class
- I A
- Landing fee
- Yes
- Activated
- 1937/12
- Distance from city
- 2 NW
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:05 AM | 10:05Z |
| Sunrise | 05:42 AM | 10:42Z |
| Sunset | 09:19 PM | 02:19Z |
| Evening civil twilight Loggable night begins | 09:56 PM | 02:56Z |
Plan a flight from KATY
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT MALSR RWY 35; PAPI RWY 12, 17, 30, & 35; HIRL RWY 17/35; MIRL RWY 12/30; REIL RWY 12, 17, & 30 - CTAF. on 123.05 — Chart Supplement ↗
Runway lighting aids — 12: 4-light PAPI (left) · 30: 4-light PAPI (left) · 17: 4-light PAPI (left) · 35: 4-light PAPI (left) + MALSR.
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 12 · 119°
- Pattern
- left (turns left)
- TPA
- 2,700 ft MSL (≈1,000 AGL)
- CTAF
- 123.05
Enter the left downwind for Rwy 12 at 2,700 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 12/30
6,898 ft × 100 ft · Concrete (Excellent)- Heading
- 119° mag · 125° true
- Markings
- nonprecision
- VGSI
- 4-light PAPI (left) (3°)
- Traffic pattern
- Left
- Declared TORA/TODA/ASDA/LDA
- 6,899 / 6,899 / 6,899 / 6,899 ft
- End lights
- REIL
- Heading
- 299° mag · 305° true
- Markings
- nonprecision
- VGSI
- 4-light PAPI (left) (3°)
- Traffic pattern
- Left
- Approach obstacle
- Tree, 51 ft, 2,013 ft from threshold, 329 ft L of centerline — 35:1 slope to clear
- Declared TORA/TODA/ASDA/LDA
- 6,899 / 6,899 / 6,899 / 6,899 ft
- End lights
- REIL
Runway 17/35
6,893 ft × 100 ft · Concrete (Good)- Heading
- 174° mag · 180° true
- Markings
- precision
- VGSI
- 4-light PAPI (left) (3°)
- Traffic pattern
- Left
- Declared TORA/TODA/ASDA/LDA
- 6,894 / 6,894 / 6,894 / 6,894 ft
- End lights
- REIL
- Heading
- 354° mag · 0° true
- Markings
- precision
- VGSI
- 4-light PAPI (left) (3°)
- Approach lights
- MALSR
- Instrument landing
- ILS/DME · CAT I · LOC 111.9 (ATY) · GS 3.00°
- Traffic pattern
- Left
- Approach obstacle
- Bldg, 83 ft, 3,775 ft from threshold, 412 ft L of centerline — 43:1 slope to clear
- Declared TORA/TODA/ASDA/LDA
- 6,894 / 6,894 / 6,894 / 6,894 ft
| Runway | Length | Your margin |
|---|---|---|
| 12/30 | 6,898 ft | |
| 17/35 | 6,893 ft |
Communication frequencies
| Service | Frequency | Notes |
|---|---|---|
| ASOS | 126.625 | |
| CNTR | 128.5 | MINNEAPOLIS CNTR |
| RDO | 122.5 | HURON RDO |
| UNIC | 123.05 | CTAF/UNICOM |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| ATY · Watertown | VORTAC | 116.60 | r179° / 4 NM |
| BKX · Brookings | VOR-DME | 108.80 | r333° / 39.4 NM |
Airport diagram
Open PDF ↗Preview diagram
Procedures at a glance
Approaches5
Minimums & Hot Spots
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- 100LL, Jet A
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns, hangars
- Other services
- Air freight, Agricultural, Air ambulance, Cargo, Charter, Instruction, Rental, Aircraft sales
Ownership & management
Remarks FAA
- PPR 48 HRS UNSKED ACR OPNS WITH MORE THAN 30 PSGR SEATS CALL AMGR 605 882-6209.
- GULLS & GEESE ON & INVOF ARPT APR-NOV.
- GLIDER OPNS APR THRU SEP.
- ANNUALLY APRIL- SEPT HAY CUTTING OPNS IN PROGRESS; FARMING EQUIP MAY BE IN APCHS.
- ACR OPNS INVOLVING ACFT WITH MORE THAN 9 PSGRS ARE NOT AUZD IN EXCESS OF 15 MINS BEFORE OR AFTER SKED ARR/DEP TIMES WITHOUT PRIOR COORDINATION WITH AMGR AND CFMN THAT ARFF IS AVBL PRIOR TO LANDING OR TAKEOFF.
- ARPT SFC COND NOT MONITORED 2230-0430.
- FOR CD IF UNA TO CTC ON FSS FREQ, CTC MINNEAPOLIS ARTCC AT 651-463-5588.
- ACTVT MALSR RWY 35; PAPI RWY 12, 17, 30, & 35; HIRL RWY 17/35; MIRL RWY 12/30; REIL RWY 12, 17, & 30 - CTAF.
- 605-753-9357
- PCR VALUE: 509/R/D/W/T
- PCR VALUE: 491/R/D/W/T
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 KATY 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 KATY
Watertown Regional Airport (ATY · KATY) is an airport in Watertown, SD, at 1,749 ft MSL. It has 2 runways, the longest 6,898 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KATY, refreshed from the Aviation Weather Center and FAA NASR.
Does KATY have a control tower?
No. Watertown Regional Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at KATY?
Watertown Regional Airport has 2 runways; the longest is 6,898 ft. See the Runways tab for headings, surface, and lighting.
Where is KATY?
Watertown Regional Airport is in Watertown, SD, at an elevation of 1,749 ft MSL. Coordinates: 44.9140, -97.1547.
Fly out of KATY often?
Save KATY 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.