Jimmerson Lake Seaplane Base
7J4 · Lake James, IN · Non-towered · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-21 · night begins 08:07 PM
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:59 AM | 10:59Z |
| Sunrise | 07:26 AM | 11:26Z |
| Sunset | 07:40 PM | 23:40Z |
| Evening civil twilight Loggable night begins | 08:07 PM | 00:07Z |
Plan a flight from 7J4
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
Pilot reports · Loading PIREPs…
Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
Headings shown are true (magnetic variation unavailable).
| Runway | Length | Your margin |
|---|---|---|
| 10W/28W | 2,675 ft |
Prefer one flat page? Full runway details for 7J4 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 7J4 kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
OLK 110.40
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| OLK · Webster Lake | VOR | 110.40 | Low | r038° / 33.9 NM |
Prefer one flat list? All 7J4 frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- 7J4
- Coordinates
- 41.7077, -85.0602
- Elevation
- 964 ft MSL
- Sectional chart
- CHICAGO
- Airport use
- Public
- Control tower
- No
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- TERRE HAUTE · 1-800-WX-BRIEF
- NOTAM facility
- HUF
- Segmented circle
- No
- Activated
- 2020/08
- Distance from city
- 2 WNW
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 under Sun & FAA night in the Weather section.
Ownership & management 2 contacts
Remarks FAA · 2 notes
General
- SEAPLANE OPS PROHIBITED BTN SS-SR. EXP HVY BOAT TFC BTN MEMORIAL DAY AND LABOR DAY. DO NOT BLOCK BOAT RAMPS. SEAPLANE DOCKING AREAS LTD.
Contact
- BOATING LAW ADMIR.
Nearby airports
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Also nearby: 52IN Strebig (private) (1 NM) · 01E Lake James (1 NM) · IN2 Snow Lake (2 NM) · I58 Crooked Lake (2 NM) · 04IN Lake Gage (private) (2 NM) · C67 Lake Pleasant (3 NM)
About 7J4
Jimmerson Lake (7J4) is a seaplane base in Lake James, IN, at 964 ft MSL. It has 1 runway, the longest 2,675 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 7J4, refreshed from the Aviation Weather Center and FAA NASR.
Does 7J4 have a control tower?
No. Jimmerson Lake is a non-towered (pilot-controlled) seaplane base; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 7J4?
Jimmerson Lake has 1 runway; the longest is 2,675 ft. See the Runways section for headings, surface, and lighting.
Where is 7J4?
Jimmerson Lake is in Lake James, IN, at an elevation of 964 ft MSL. Coordinates: 41.7077, -85.0602.
More about 7J4
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 7J4 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.