Two of the eight waterfall sites we read state a swimming rule on their own pages. Keep that number in mind while you use this page. We compared Niagara, Krka, Plitvice, Dunn's River, both sides of Iguazú, Dettifoss and one Madeira levada trail on four things: how the operator describes the place, what it says about swimming, how far it asks you to walk, and where it mentions steps. Every cell comes from an operator's page, read on 2026-10-27, and a cell with nothing to quote says so. A blank is not a no.
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What do the eight operators state?
| Site (who says it) | Setting | Swimming | Walk | Steps |
|---|---|---|---|---|
| Niagara (Niagara Parks) | Journey Behind the Falls tunnels and the White Water Walk boardwalk | Not confirmed | 240-foot tunnel and a 1,000-foot boardwalk at the White Water Walk | About 18 steps to the lower deck at Journey Behind the Falls |
| Krka (Krka National Park) | Tufa barriers; Skradinski buk is the seventh and last on the river | Not allowed at Skradinski buk; elsewhere only in marked areas, 1 June to 30 September | 1,900 m one-way circular trail at Skradinski buk; 875 m from the Lozovac entrance | Steps at the watermill and church entrances; an escort advised for ascent and descent at Skradinski buk |
| Plitvice (Plitvice Lakes National Park) | 16 named lakes joined by waterfalls | Strictly prohibited in the lakes | Programs from 3,500 m (2 to 3 hours) to 17,500 m (6 to 8 hours) | Not confirmed |
| Dunn's River (the operator) | A guided climb up falls that extend across 183 meters (960 feet) | No rule found | 1.5 to 3 hours on site | Not confirmed |
| Iguazú, Argentine side (visitor-services operator) | Four circuits | Not confirmed | Circuits of 650 m, 1,450 m, 1,850 m and 2,200 m | The lower circuit has stretches with stairs |
| Iguazú, Brazilian side (Urbia Cataratas) | One trail with viewpoints, plus a park bus | Not confirmed | Trail of 1 km on foot; about 12 km round trip on the park bus | Stairs on the trail |
| Dettifoss (Vatnajökull National Park) | One waterfall, 44 to 45 m high and about 100 m wide | Not confirmed | D1: 1.5 km round trip, 0.5 to 1 hour, rated easy | Not confirmed |
| Madeira, PR 6 (Visit Madeira) | Levada trail to the 25 Fontes lagoon | Not confirmed | 4.3 km one way, 8.6 km round trip, about 3 hours, moderate | Not confirmed |
Of the 32 cells, 22 are stated by an operator and 10 are not. Walking distance is stated for all eight sites, steps for four, and swimming for two. Not confirmed never means the answer is no. Read it as a gap. It means we found no sentence, in a page that may be short, out of date or written for a different question. The pages behind the table are the Niagara Parks accessibility page, the Krka FAQ, trail list and mobility document, the Plitvice FAQ and program list, the Dunn's River visitor guide, the Iguazú Argentina FAQ, the Brazilian operator's guidance for limited mobility and general information, the Vatnajökull page on Dettifoss and the Visit Madeira page.
A cell is filled only when the operator's page has a sentence we can quote, and where an operator's own pages disagree we say so instead of picking one. Plitvice is the example. Its general information page speaks of seven different routes to tour the lake system and four hiking trails, while its activities page speaks of eight circular routes. That is why the table gives lengths from the program list and no count of routes. We hold every row to the same standard, and a row that cannot reach three stated cells is not in the table.
Which column should decide?
Start with the one that could stop you. Pick one. If swimming is the reason for the trip, only Krka and Plitvice give you a sentence to work from, and one of them is a prohibition. If your time is short, read the walk column and divide: Dettifoss asks for 0.5 to 1 hour, a Plitvice program for 2 to 8. If stairs are a problem, open the pages of the four operators that mention steps first, and write to the other four before you book, because a page that says nothing about stairs may still describe a route that has them, and nothing here replaces the operator's own page on the day, since trails close and works change.
Where can you swim?
Two sites say, and they say different things. Plitvice's FAQ states that swimming in the lakes is strictly prohibited. Krka's FAQ allows swimming only in designated areas at Roški slap, Stinice and Pisak, from 1 June to 30 September, at your own risk and depending on weather and water level, and the park's Skradinski buk page states that swimming there is not allowed. For the other six we found no sentence. That does not turn Niagara or Dettifoss into places to swim. It turns them into places where the operator's page is silent. Silence is not permission. Our guide to swimming at waterfalls collects the rules we could read, and Krka or Plitvice sets the two Croatian parks side by side. If a listing for any of these sites promises a swim, hold the promise against the site's own line.
Which sites ask for a short walk?
Distance is the one column every operator fills in. At the short end, the Vatnajökull park page puts Dettifoss at 1 km from the car park to the viewpoint, 1.5 km round trip, 0.5 to 1 hour, rated easy. Krka's trail list gives 875 m from the Lozovac entrance to Skradinski buk and a 1,900 m one-way circular trail around the falls. The Iguazú Argentina FAQ lists a 650 m forest path between its service area and the falls station, and Niagara Parks gives a 240-foot tunnel and a 1,000-foot boardwalk for the White Water Walk.
At the long end, Plitvice lists programs from 3,500 m to 17,500 m, and Visit Madeira gives 8.6 km round trip to the 25 Fontes lagoon. The Brazilian side of Iguazú sits between: a trail of 1 km on foot, plus about 12 km round trip on the park bus between the visitor center and the trail, as its general information page says.
These numbers measure different things. A trail, a circuit, a program and a boardwalk are not the same unit, so do not add them up across sites. A 1 km walk with stairs is not the same effort as 1 km on the level, and that is the next question. Our where to go section has the destinations, and the Niagara, Krka and Plitvice categories are Niagara Falls, Krka National Park and Plitvice Lakes.
Compare like with like. A boardwalk length and a program length answer different questions.
Where do steps come up?
Four operators mention steps, and each mentions them in a different place. Niagara Parks says the lower observation deck at Journey Behind the Falls can be reached only by stairs, approximately 18 steps, and that two small lower viewing decks along the White Water Walk boardwalk can only be reached by stairs. The Argentine-side operator at Iguazú says its lower circuit has stretches with stairs.
On the Brazilian side, the operator advises people with limited mobility against walking the trail, citing its stairs and the 1 km route, and points to the last bus station, Porto Canoas, where a panoramic elevator reaches the walkway. Krka's mobility document says the entrances to the watermills and to the church on Visovac are narrow and have steps, and it recommends a personal escort for the ascent and descent at Skradinski buk.
For Plitvice, Dettifoss, Madeira and Dunn's River we found no step count. A missing count is a gap. The operators are the ones who can fill it. Ask them, in writing. Steps are also only part of the picture, so waterfalls for families and limited mobility reads surfaces, slopes and supervision. Read both before you plan the day. Stairs are not minor.
Which one is a climb, not a walk?
Dunn's River is the entry here whose operator describes the activity as a climb. Its page says the falls extend across more than 183 meters, or 960 feet, and lists a guided climb among what the visit includes. The page we read gives no swim rule and no step count, only a time on site. When the activity is the climb itself, that is a gap worth closing with a question to the operator before you go. Ask first.
Tours that include the climb are collected in the Ocho Rios category, and guided tour or on your own covers what the operator's page does and does not say about guides. Our guide to reading a tour listing is the place to check what a listing says about the climb. The same habit applies to the other seven rows.
What did we leave out?
We meant to include Multnomah Falls and Seljalandsfoss. For Multnomah, the Forest Service page returned an error to our fetcher, and the Oregon Department of Transportation page covers a parking permit only. For Seljalandsfoss, the pages we read said too little about swimming, walking time or steps to fill three cells. We dropped both rows instead of filling them from blogs. Blogs were available. We also left out children, ticket rules and season on purpose, because each has a page of its own and because a table that mixes them stops being readable. The uncomfortable part is the swimming column. It is the one readers ask about most, and it is the emptiest. Two of eight is what the operators gave us, and we would rather show that gap in the open, with the sites named, than close it with a guess that would sit in the table looking like every other cell. Season sits in When to Visit Waterfalls, and the rest of the choice sits in the formats of waterfall tours.
Quick answers
Which of these waterfalls allow swimming?
Two of the eight state a rule. Plitvice prohibits swimming in the lakes. Krka allows it only in designated areas from 1 June to 30 September, and not at Skradinski buk. The other six pages we read say nothing on it. Read on 2026-10-27; check the site's own page the week you go.
Which has the shortest stated walk?
Among the distances operators state, Dettifoss: the Vatnajökull park page gives 1 km from the car park to the viewpoint, 1.5 km round trip. Distances measure different things, so compare only like with like.
Why does this page not rank the waterfalls?
Operators describe themselves in different terms and leave different cells empty. A ranking would compare silences, not waterfalls.
Which operators mention steps?
Four: Niagara Parks, the Argentine-side operator at Iguazú, the Brazilian-side operator at Iguazú and Krka National Park. Each says where the steps are. The other four pages say nothing on steps.
Data verified on . Operator pages read on 2026-10-27; not confirmed means no sentence found. Rules and works change: check the official site before you go. Editorial Policy
Krka tours, with the park's own rules in mind
We earn a commission if you book through this link. The park's swimming and trail rules apply whichever tour you choose.