Photo: Cristiano Tomás · CC BY-SA 4.0Alum Rock Falls
One for the list
Is it plungeworthy?
A waterfall on Upper Penitencia Creek.
The details
- Watercourse
- Upper Penitencia Creek
- Coordinates
- 37.40511, -121.78893
About Alum Rock Falls
Alum Rock Falls is a waterfall in California, on Upper Penitencia Creek.
Fed largely by snowmelt, it runs hardest in late spring and early summer and can thin to a trickle by late season.
Plungeworthy rates Alum Rock Falls 3.5/10 — one for the list. The score weighs its scale, how confidently it's mapped, and its character.
Where it is
Before you go
The pin marks the feature, not a trailhead or a legal route in. Some sit on private land or need a real hike, and conditions change with season and rain. Check local access, don't trespass, and never enter water — hot or cold — where it isn't safe.
Common questions
Where is Alum Rock Falls?
Alum Rock Falls is a waterfall in California, at 37.40511, -121.78893.
Is Alum Rock Falls worth visiting?
One for the list — Plungeworthy rates it 3.5/10.
Gear for the trip
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