Live wading and fishing conditions for 14 Hawaii rivers
Every river below is monitored through its USGS streamflow gauges, refreshed every 15 minutes and rated in plain language for wading safety. Select a river for the live dashboard with current flow, trend, weather and community reports.
Kaukonahua Stream / Wahiawā (Lake Wilson)
This is Oʻahu's freshwater bass mecca — Wahiawā Reservoir (Lake Wilson), fed and drained by the Kaukonahua Stream, holds the state's best introduced peacock bass (tucunare), largemouth, smallmouth, channel catfish, and tilapia fishery, with public bank and boat access at the Wahiawā Freshwater State Recreation Area. The Kaukonahua gauges below the reservoir and downstream at Waialua track how much water is moving through the system and warn when the North Shore streams are flashing.
Region: Oʻahu · Fish for: Peacock Bass (Tucunare), Largemouth Bass, Channel Catfish · USGS gauges: Kaukonahua Stream Blw Wahiawa Reservoir, Oahu, Hi, Kaukonahua Str At Waialua, Oahu, Hi
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Kawaikoi Stream (Kōkeʻe)
The clear, cool headwater of the Waimea system inside Kōkeʻe State Park is home to Hawaii's ONLY public trout fishery — the state stocks rainbows into Kawaikoi Stream and the neighboring Puʻu Lua reaches for a short highland season, usually opening in August. This is a small, genuinely wadeable stream at 3,000+ feet; the season, bag limits, and gear rules are strict, so confirm the current DLNR season before you drive up the canyon.
Region: Kauaʻi · Fish for: Rainbow Trout · USGS gauges: Kawaikoi Stream Nr Waimea, Kauai, Hi
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Wailua River
Kauaʻi's storied Wailua — the islands' most navigable river, lined with the Fern Grotto tour boats and kayak liveries — carries a modest introduced warmwater fishery in its slower river and reservoir reaches (largemouth, tilapia, channel catfish, the odd peacock and smallmouth) and a native mullet run in the tidal estuary near Lydgate. Frame conditions as flash-flood and paddling safety first: the Wailua rises fast and pushes hard after mountain rain, and the lower river is tidal.
Region: Kauaʻi · Fish for: Largemouth Bass, Tilapia, Striped Mullet (ʻAmaʻama) · USGS gauges: Sf Wailua River Nr Lihue, Kauai, Hi, Eb Of Nf Wailua River Nr Lihue, Kauai, Hi
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Hanalei River
The Hanalei is postcard Kauaʻi — a taro-terraced valley river winding through a National Wildlife Refuge to a famous bay. It is FLASH-FLOOD country: the Hanalei rises violently after Nā Molokama rain and has swept people from crossings and loʻi, so treat this card as a safety gauge first. The fishing angle is a native amphidromous stream to observe (ʻoʻopu, ʻopae) and a mullet run in the tidal mouth by the pier — not a gamefish river.
Region: Kauaʻi · Fish for: Striped Mullet (ʻAmaʻama) · USGS gauges: Hanalei River Nr Hanalei, Kauai, Hi
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Wailuku River (Hilo)
Hawaii's longest river, the Wailuku pours off Mauna Kea and Mauna Loa through Hilo, over Rainbow Falls and the Boiling Pots, to Hilo Bay. It is the most dangerous river in the state for flash flooding — it has killed sightseers at Boiling Pots — so this is a flood-safety card first. The realistic fishing is native ʻoʻopu to observe in the pools and a mullet fishery in the tidal Wailuku/Wailoa mouth area.
Region: Hawaiʻi Island · Fish for: Striped Mullet (ʻAmaʻama) · USGS gauges: Wailuku River Nr Kaumana, Hi, Wailuku River At Piihonua, Hi
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Waimea River (Kauaʻi)
The Waimea drains the vast Waimea Canyon — 'the Grand Canyon of the Pacific' — and its river carries the runoff of some of the wettest terrain on Earth. This is a flash-flood and stream-crossing safety card above all: the Waimea browns and surges fast after upcountry rain. The fishing angles are the native ʻoʻopu stream to observe and a mullet fishery in the tidal mouth by Lucy Wright Park.
Region: Kauaʻi · Fish for: Striped Mullet (ʻAmaʻama) · USGS gauges: Waimea River Us Of Kekaha-Waiahulu Int., Kauai, Hi, Waimea River Near Waimea, Kauai, Hi
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ʻOheʻo Gulch (Kīpahulu)
ʻOheʻo Gulch — the 'Pools of ʻOheʻo' in the Kīpahulu district of Haleakalā National Park — is a chain of waterfall pools stepping down to the sea at the end of the Hāna coast. It is a signature flash-flood card: the Park closes the pools to swimming when the gauge rises, because ʻOheʻo can surge from calm to deadly in minutes when the upcountry gets rain. There is no gamefish fishery; frame this as visitor flash-flood safety and a native amphidromous stream (ʻoʻopu) to observe.
Region: Maui · Fish for: ʻOʻopu (Native Goby) · USGS gauges: Oheo Gulch At Dam Near Kipahulu, Maui, Hi
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Mānoa Stream
Mānoa Stream drains the lush, rain-soaked Mānoa Valley behind Honolulu, past the famous Mānoa Falls trail to the Ala Wai. It is one of Oʻahu's most important flash-flood safety gauges — the October 2004 Mānoa flood tore through the valley and the University, and the stream still rises fast in valley rain. The fishing angle is a native amphidromous stream to observe and lowland tilapia in the slow, urban reaches; frame conditions as hiker and crossing safety first.
Region: Oʻahu · Fish for: Tilapia · USGS gauges: Manoa Stream At Woodlawn Drive, Oahu, Hi
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Wailuku River (ʻĪao Valley, Maui)
Maui's Wailuku River drains the sheer ʻĪao Valley — home of the ʻĪao Needle (Kūkaʻemoku) — through Wailuku town to Kahului. It is a serious flash-flood stream: the September 2016 ʻĪao floods reshaped the valley and damaged the state monument, and the river still surges hard in West Maui rain. There is no gamefish fishery in the valley; frame this as flash-flood and crossing safety with a native amphidromous stream (ʻoʻopu) to observe, and a mullet run in the tidal lower reaches.
Region: Maui · Fish for: Striped Mullet (ʻAmaʻama) · USGS gauges: Wailuku River At Kepaniwai Park, Maui, Hi
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Honoliʻi Stream
Honoliʻi, just north of Hilo, is best known for the surf break at its mouth, but it's also a healthy native amphidromous stream — one of the better places to see ʻoʻopu, ʻopae, and hīhīwai climbing the riffles. There is no gamefish fishery here; this card is a native-stream stewardship and flash-flood safety gauge for a stream that surges fast off the Hilo slopes.
Region: Hawaiʻi Island · Fish for: ʻOʻopu (Native Goby) · USGS gauges: Honolii Stream Nr Papaikou, Hi
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Kahana Stream
Kahana is one of Hawaiʻi's last intact ahupuaʻa — a mountains-to-sea valley (Ahupuaʻa ʻO Kahana State Park) on Oʻahu's windward coast, with taro loʻi, a native amphidromous stream, and the historic Huilua Fishpond at the bay. It carries a genuine estuary/subsistence fishery in the lower stream and bay (mullet, tilapia, and other brackish fish) alongside native ʻoʻopu and ʻopae to observe upstream. Frame the gauge as flash-flood safety and native-stream stewardship, with a real light-tackle estuary fishery at the mouth.
Region: Oʻahu · Fish for: Striped Mullet (ʻAmaʻama), Tilapia · USGS gauges: Kahana Str At Alt 30 Ft Nr Kahana, Oahu, Hi
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Heʻeia Stream
Heʻeia Stream runs off the Koʻolau through the restored Heʻeia wetland to Kāneʻohe Bay and the famous Heʻeia Fishpond (loko iʻa) — one of Hawaiʻi's flagship native-stream and fishpond restoration sites. This is a stewardship-first card: a native amphidromous stream (ʻoʻopu, ʻopae) with a mullet-and-tilapia estuary fishery where it meets the bay, wrapped around active loko iʻa and wetland restoration. Frame conditions as native-stream stewardship and windward flash-flood safety.
Region: Oʻahu · Fish for: Striped Mullet (ʻAmaʻama), Tilapia · USGS gauges: Heeia Stream At Haiku Plantations Dr., Oahu, Hi
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Wainiha River
Wainiha drains the wettest, steepest heart of Kauaʻi's north shore — a remote, powerful native stream that empties near Haʻena. It is a serious flash-flood and stream-crossing hazard: the Wainiha surges hard and brown after Nā Molokama and Waiʻaleʻale rain. There is no gamefish fishery here; treat this card as a safety gauge and a native amphidromous stream (ʻoʻopu, ʻopae, hīhīwai) to observe, plus a mullet run in the tidal mouth.
Region: Kauaʻi · Fish for: Striped Mullet (ʻAmaʻama) · USGS gauges: Wainiha River Nr Hanalei, Kauai, Hi
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Kaluanui Stream (Sacred Falls)
Kaluanui Stream carves the narrow Kaliuwaʻa (Sacred Falls) gorge on Oʻahu's windward-north coast. This is the most sobering safety card in the state: the gorge is a lethal flash-flood and rockfall funnel, and Sacred Falls State Park has been officially CLOSED to the public since the 1999 Mother's Day disaster that killed eight and injured dozens. There is no fishery to promote here — this card exists as a flash-flood gauge and a reminder that the gorge remains closed and dangerous. Observe native stream life only from legal public ground near the mouth.
Region: Oʻahu · Fish for: ʻOʻopu (Native Goby) · USGS gauges: Kaluanui Stream Nr Punaluu, Oahu, Hi
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