Big Dalton Dam Emergency HeliportPrivate
CL18 · Glendora, CA · 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 07:15 PM
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:13 AM | 13:13Z |
| Sunrise | 06:38 AM | 13:38Z |
| Sunset | 06:50 PM | 01:50Z |
| Evening civil twilight Loggable night begins | 07:15 PM | 02:15Z |
Plan a flight from CL18
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 |
|---|---|---|
| H1/ | 46 ft |
Prefer one flat page? Full runway details for CL18 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the CL18 kneeboard →
Comms & NavAids
Nearby navigation aids
POM 110.40 · PDZ 112.20 · RAL 108.60 · +4
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| POM · Pomona | VORTAC | 110.40 · 41X | Low | r332° / 5.5 NM |
| PDZ · Paradise | VORTAC | 112.20 · 59X | High | r302° / 20.5 NM |
| RAL · Riverside | VOR | 108.60 | Low | r291° / 22 NM |
| SLI · Seal Beach | VORTAC | 115.70 · 104X | Low | r013° / 26.1 NM |
| ELB · El Toro | VOR/DME | 117.20 · 119X | Low | r338° / 29.8 NM |
| PMD · Palmdale | VORTAC | 115.55 · 102Y | High | r141° / 30.5 NM |
| RIV · March | TACAN | 113.00 · 77X | — | r287° / 30.9 NM |
Charts & procedures
No published instrument procedures or Chart Supplement for CL18 — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- CL18
- Coordinates
- 34.1677, -117.8112
- Elevation
- 1,593 ft MSL
- Sectional chart
- LOS ANGELES
- Airport use
- Private
- Control tower
- No
- ARTCC
- LOS ANGELES (ZLA)
- Flight service (FSS)
- RIVERSIDE · 1-800-WX-BRIEF
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- lighted
- Activated
- 2023/07
- Distance from city
- 4 N
Night operations
- Airport lighting
- SEE RMK
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 · 6 notes
General
- CAUTION - HIGHER CANYON TRRN TO EITHER SIDE OF FLIGHTPATHS.
- CAUTION - DAM BNTH NE FLIGHTPATH.
Runways
- MAX GW 12000 LBS.
Lighting
- ACTVT PERIMETER LIGHTS 5 CLICKS, FLOODLIGHTS 7 CLICKS - VHF 123.075.
Contact
- EMAIL: GELROD@DPW.LACOUNTY.GOV
- OWNER CTC: SCOTT GREGOWSKI (SGREGOWSKI@DPW.LACOUNTY.GOV)
Nearby airports
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Also nearby: CL88 San Dimas Dam Emergency (private) (2 NM) · 14CL Foothill Presbyterian Hospital (private) (4 NM) · 1CL0 William Archibald (private) (4 NM) · CA48 Onelegacy Helistop (private) (6 NM)
About CL18
Big Dalton Dam Emergency (CL18) is a heliport in Glendora, CA, at 1,593 ft MSL. It has 1 runway, the longest 46 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for CL18, refreshed from the Aviation Weather Center and FAA NASR.
Does CL18 have a control tower?
No. Big Dalton Dam Emergency is a non-towered (pilot-controlled) heliport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at CL18?
Big Dalton Dam Emergency has 1 runway; the longest is 46 ft. See the Runways section for headings, surface, and lighting.
Where is CL18?
Big Dalton Dam Emergency is in Glendora, CA, at an elevation of 1,593 ft MSL. Coordinates: 34.1677, -117.8112.
More about CL18
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 CL18 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.