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Alaska · Lake and Peninsula Borough

Kvichak River

Lake and Peninsula Borough · 50 mi · Class I–II
Optimal: 5000–25000 CFS · USGS #15300500
44°F — Cold water immersion risk — review cold water safety before launching
14,000 avg
11,200CFS
11.36 ft gauge height
Optimal
Rising slowly (+100 cfs/hr)(+100 in 3h)
Flow data is live from USGS·Rapid classifications and CFS ranges need community verification·Know this river?
Avg flow: 14,000 cfsHist. median: 12,600 cfsUSGS #15300500
Bristol Bay Watershed · Largest Sockeye Run on Earth · ADF&G Trophy Rainbow Trout

About

From Lake Iliamna's outlet in Alaska's Lake and Peninsula Borough, the Kvichak River carries the largest sockeye salmon run on Earth across 50 miles to Bristol Bay. At 14,000 CFS average flow — ranging from 5,000 to 25,000 CFS optimal — this is big water through Class I-II conditions that demands respect for its scale and remoteness. The upper Kvichak below Lake Iliamna holds ADF&G trophy rainbow trout that feed on salmon eggs and flesh throughout the runs. The middle section around Igiugig village sees both sockeye and rainbow action, while the lower river to Bristol Bay adds king salmon to the mix. Yup'ik and Athabascan peoples established this as their salmon capital long before contact, and the 2014 Bristol Bay Watershed Assessment confirmed what indigenous knowledge already understood about the system's global significance. Igiugig Lodge provides guided access to what remains one of Alaska's premier rainbow trout fisheries, with fish that grow fat on the endless protein delivered by millions of returning sockeye.

Solunar Fishing Activity
🌖
Waning Gibbous
88% illumination
Fair
Moon overhead
1:00 PM
Moonrise
10:28 AM
Moonset
3:32 PM
Moon underfoot
1:00 AM
Next full moon: Jun 2926 days
Outfitters
Igiugig Lodge
Fly-out trophy rainbow trout lodge on the upper Kvichak
10-Year Flow Patterns
See 10 years of flow patterns for this river — historical analysis is a Pro feature.Upgrade to Pro →
Your Optimal Range
Set your personal optimal CFS window per river — custom ranges are a Pro feature.Upgrade to Pro →
Data Quality

River conditions are community-verified. CFS ranges, difficulty ratings, and access points may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level.

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