Photo: Joseph Gage from USA · CC BY-SA 2.0Lake Falls
One for the list
Is it plungeworthy?
A plunge.
The details
- Type
- Plunge
- Coordinates
- 41.29896, -89.02481
About Lake Falls
Lake Falls is a plunge in Illinois.
It's fullest after rain, and flow can drop off during dry spells — plan around recent weather.
Plungeworthy rates Lake Falls 3.6/10 — one for the list. The score weighs its scale, how confidently it's mapped, and its character.
What you'll find
Know what this listing is: Lake Falls — the roughly 25-foot spillway-fed falls at the top of Matthiessen State Park's Dells, and normally the first thing visitors see from the iconic bridge — is closed until further notice. The July 5, 2026 Vermilion River flood took out access, and the bridge route is detoured.
Matthiessen's canyon has a flood-closure history (2021, now 2026) — treat any visit plan here as conditional on the IDNR closures page.
When open, this is the easiest waterfall payoff in the LaSalle County canyon country: minutes from the lot to the bridge view.
Getting there
- Trailhead
- Matthiessen State Park Dells area, Oglesby — currently closed/detoured
- Parking
- Dells lot
- Road
- Route 178 — paved
- Hike
- 0.5 mi round trip (Easy when open)
- Heads up
- Fed by the Lake Matthiessen spillway, so it holds water better than pure-runoff falls.
When to go
When the closure lifts; the spillway feed makes it less season-dependent than its neighbors.
Rules & fees
- Fee / pass
- Free
- Dogs
- Leashed
- Warnings
- Closed until further notice — July 2026 flood damage. Check IDNR closures.
Researched from IDNR — current site closures · Shaw Local — Matthiessen flood closure precedent. Conditions change — verify before you drive. Been to Lake Falls recently? Post a conditions report below.
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 Lake Falls?
Lake Falls is a waterfall in Illinois, at 41.29896, -89.02481.
Is Lake Falls worth visiting?
One for the list — Plungeworthy rates it 3.6/10.
Gear for the trip
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