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Río San Pedro: big, warm, lake-fed whitewater from Lago Riñihue

Río San Pedro guide: big-volume class III run from Lago Riñihue, play wave, take-outs, flows by season and today’s live San Pedro level.

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Where the San Pedro runs

The San Pedro is born at the outlet (desagüe) of Lago Riñihue, the last lake in a chain of five that includes Pirihueico, Neltume and Panguipulli. Draining all of them gives it reliable year-round flow and relatively warm, transparent blue water. It flows west toward Los Lagos and is known for some of Chile’s best trout and salmon fishing.

The run (class III)

Rivers of Chile calls the San Pedro one of the country’s top play runs for kayaks and rafts. Rapids are straightforward, rated class III, with one section of Futaleufú-style exploding waves. The full run takes 4–5 hours; camping and fishing on a sand beach to make it an overnight trip is popular.

• Put-in: at the lake outlet. You can carry to the lake and paddle to the outlet, or use the grounds of Hotel Riñimapu, which has charged a small per-person fee and can sometimes arrange a shuttle.
• Take-out 1: the bridge over the San Pedro, about 22 km toward Los Lagos once back on the paved road. Exit on river left, where steps and a handrail are cut into the bank.
• Take-out 2: the Balsadero San Pedro car ferry, 8–10 km further downstream; watch for small signs.
• Play wave: at higher flows, usually late November to mid-December, a wide wave-hole forms about 4 km below the bridge.

Season and typical flows

In winter, spring and early summer the San Pedro carries a lot of water, from about 210 m³/s up to around 1,400 m³/s (7,500–50,000 cfs). By mid to late summer it can drop to roughly 57 m³/s (2,000 cfs).

How to read our San Pedro gauge

Our Panguipulli page shows the DGA station Río San Pedro en desagüe Lago Riñihue, right at the put-in. Because the river leaves a large lake, changes are gradual. Compare the reading with the 57–1,400 m³/s range above; the play wave below the bridge is a higher-water feature.

Access

From Pucón it is about two hours: west to Villarrica, south to Licán Ray, then southeast to Panguipulli. From Panguipulli, follow the paved road toward Los Lagos for about 13 km, then about 7 km of gravel to the lake outlet.

Safety

Even with simple rapids, this is a high-volume river with long swims. Rivers of Chile has also reported plans to dam it, so check current conditions locally before you go.

Frequently asked questions

What class is the San Pedro?

Class III, with big-volume wave trains and one section of exploding waves.

Where can I see the San Pedro water level today?

On <a href="https://chilewaterlevels.com/panguipulli/">chilewaterlevels.com/panguipulli</a>, from the DGA station at the Lago Riñihue outlet.

Provisional real-time data from DGA Chile. Always scout and check conditions on the river.

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Sources: riversofchile.com/rio-san-pedro · Updated 2026-10-26