Hawaii River Levels & Streamflow
As of Nov 1, 2026, Hawaii rivers are running at 1395% of normal across 48 USGS gauges — the highest is 2,050 cfs on the Wailuku River At Piihonoua. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Hawaii.
Hawaii river map
See Hawaii’s rivers on a live map
Every gauge, river and reservoir, one tap each:
- Rivers now — which are running high or low
- Reservoirs — how full each one is vs normal
- Rain — past 24 hrs and the 72-hr forecast, press play
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Hawaii river conditions today
Where rivers are running versus normal, what’s spiking and what’s coming — refreshed daily from USGS and NOAA.
Streamflow levels across Hawaii are currently 1395% of normal, with the Wailuku River At Piihonoua reporting the highest discharge in the state at 2,050 cfs and a gauge stage of 8.89 ft.
Meanwhile, the Waihee River At Dam Near Waihee is seeing a spike today — up 330% since yesterday and currently running near peak.
Tap any gauge below for the full hydrograph, paired weather forecast, and historical context. Use the rivers panel to jump into Hawaii's named rivers.
Active weather warnings for Hawaii
Hawaii residents, particularly those in Kauai, Oahu, Molokai, and Maui, should exercise caution due to a High Surf Advisory in effect until Monday, November 2 at 6:00 PM HST. North and west-facing shores are experiencing dangerous conditions with waves building to 15-20 feet on northern exposures and 10-15 feet on western shores. Strong breaking waves and powerful currents pose significant hazards, making swimming extremely dangerous. Residents and visitors in coastal communities including Honolulu, Lihue, and other exposed beach areas should avoid ocean activities and stay away from affected shorelines. High surf is expected to persist through Monday before declining Tuesday.
How Hawaii’s rivers compare to normal
Every gauge placed by its own percent of normal, and three years of the statewide trend.
Where every gauge actually sits
One dot per Hawaii streamgauge, placed by its own percent of normal. The state average is a single line through all of it.
Percent of normal compares today's discharge with the historical average for this calendar day. Tap any dot to open that gauge.
Hawaii streamflow, three water years
Statewide percent of normal, every day since Oct 2023. The dotted line is normal.
799 daily readings from 47 reporting gauges. Percent of normal is today's statewide discharge against the historical average for the same calendar day — 100% is normal, not "good". The axis tops out at 250%: 128 readings above that — including the 9923% peak in Sep 2026 — are drawn along the top edge, so a few flood days cannot flatten three years of everything else. The line breaks in 2 places where the record skips more than five days — those are gaps in reporting, not readings of zero.
Hawaii flow report
| Streamgage | Streamflow | Gage height | Water temp | Air temp | Elevation | Watershed |
|---|---|---|---|---|---|---|
|
Sf Wailua River Nr Lihue, Hi
1 day ago · USGS 16060000 |
39,800 cfs | 20.75 ft | · | 73°F | 251 ft | Kauai |
|
Waimea River Nr Waimea, Hi
20 hours ago · USGS 16031000 |
1,510 cfs | 9.60 ft | · | 72°F | 15 ft | Kauai |
|
Wailuku River At Piihonoua, Hi
20 hours ago · USGS 16704000 |
629 cfs | 5.89 ft | · | 69°F | 1,084 ft | Hawaii |
|
Oheo Gulch At Dam Near Kipahulu, Hi
20 hours ago · USGS 16501200 |
425 cfs | 3.00 ft | · | 74°F | 431 ft | Maui |
|
Wainiha River Nr Hanalei, Hi
20 hours ago · USGS 16108000 |
425 cfs | 2.91 ft | · | 67°F | 990 ft | Kauai |
|
Kahana Str At Alt 30 Ft Nr Kahana, Hi
20 hours ago · USGS 16296500 |
340 cfs | 5.99 ft | · | 73°F | 29 ft | Oahu |
|
Manoa-Palolo Drainage Canal At Moiliili, Hi
21 hours ago · USGS 16247100 |
332 cfs | 2.73 ft | · | 75°F | 1 ft | Oahu |
|
Eb Of Nf Wailua River Nr Lihue, Hi
21 hours ago · USGS 16068000 |
284 cfs | 1.71 ft | · | 71°F | 500 ft | Kauai |
|
Honolii Stream Nr Papaikou, Hi
20 hours ago · USGS 16717000 |
269 cfs | 4.10 ft | · | 69°F | 1,557 ft | Hawaii |
|
Waikele Str At Waipahu, Hi
21 hours ago · USGS 16213000 |
223 cfs | 3.16 ft | 77°F | 74°F | 23 ft | Oahu |
|
Waimanalo Str At Waimanalo, Hi
20 hours ago · USGS 16249000 |
221 cfs | 8.05 ft | · | 74°F | 20 ft | Oahu |
|
Kalihi Str Nr Honolulu, Hi
20 hours ago · USGS 16229000 |
210 cfs | 5.28 ft | · | 72°F | 490 ft | Oahu |
|
Makawao Str Nr Kailua, Hi
20 hours ago · USGS 16254000 |
174 cfs | 8.29 ft | · | 73°F | 79 ft | Oahu |
|
Kawaikoi Stream Nr Waimea, Hi
20 hours ago · USGS 16010000 |
129 cfs | 3.54 ft | · | 63°F | 3,422 ft | Kauai |
|
Kaluanui Stream Nr Punaluu, Hi
21 hours ago · USGS 16304200 |
114 cfs | 5.57 ft | · | 72°F | 124 ft | Oahu |
|
Halawa Stream Near Halawa, Hi
1 day ago · USGS 16400000 |
113 cfs | 3.55 ft | · | 69°F | 258 ft | Molokai |
|
N. Halawa Str Nr Quar. Stn. At Halawa, Hi
20 hours ago · USGS 16226400 |
104 cfs | 4.54 ft | · | 75°F | 66 ft | Oahu |
|
Iao Stream At Kepaniwai Park Nr Wailuku, Hi
20 hours ago · USGS 16604500 |
97 cfs | 1.14 ft | · | 63°F | 797 ft | Maui |
|
Waihee River At Dam Near Waihee, Hi
20 hours ago · USGS 16614000 |
92 cfs | 2.03 ft | · | 69°F | 606 ft | Maui |
|
Waialae Str At Alt 3, Hi
20 hours ago · USGS 16019000 |
89 cfs | 1.81 ft | · | 61°F | 3,857 ft | Kauai |
|
Waikane Str At Alt 75 Ft At Waikane, Hi
20 hours ago · USGS 16294900 |
78 cfs | 3.80 ft | · | 73°F | 100 ft | Oahu |
|
Nf Kaukonahua Str Abv Rb, Hi
21 hours ago · USGS 16200000 |
75 cfs | 2.90 ft | · | 69°F | 1,233 ft | Oahu |
|
Waiakeakua Str At Honolulu, Hi
20 hours ago · USGS 16240500 |
73 cfs | 1.89 ft | · | 71°F | 277 ft | Oahu |
|
Kamananui Str At Maunawai, Hi
20 hours ago · USGS 16330000 |
72 cfs | 3.14 ft | · | 72°F | 18 ft | Oahu |
|
Halaulani Str At Alt 400 Ft Nr Kilauea, Hi
20 hours ago · USGS 16097500 |
54 cfs | 2.00 ft | · | 72°F | 405 ft | Kauai |
|
Moanalua Stream Nr Kaneohe, Hi
21 hours ago · USGS 16227500 |
54 cfs | 3.82 ft | · | 71°F | 662 ft | Oahu |
|
Haiku Str Nr Heeia, Hi
20 hours ago · USGS 16275000 |
54 cfs | 2.08 ft | · | 71°F | 273 ft | Oahu |
|
Sf Kaukonahua Str At E Pump, Hi
21 hours ago · USGS 16208000 |
52 cfs | 2.21 ft | · | 70°F | 882 ft | Oahu |
|
Pukele Stream Near Honolulu, Hi
20 hours ago · USGS 16244000 |
48 cfs | 2.10 ft | 76°F | 74°F | 364 ft | Oahu |
|
Waihee Str Nr Kahaluu, Hi
20 hours ago · USGS 16284200 |
47 cfs | 3.63 ft | · | 70°F | 175 ft | Oahu |
|
N. Halawa Str Nr Honolulu, Hi
21 hours ago · USGS 16226200 |
45 cfs | 7.59 ft | · | 75°F | 163 ft | Oahu |
|
West Wailuaiki Stream Near Keanae, Hi
20 hours ago · USGS 16518000 |
41 cfs | 2.26 ft | · | 69°F | 1,376 ft | Maui |
|
Hanalei River Nr Hanalei, Hi
1 day ago · USGS 16103000 |
41 cfs | · | · | 72°F | 74 ft | Kauai |
|
Opaeula Str Nr Wahiawa, Hi
20 hours ago · USGS 16345000 |
37 cfs | 2.52 ft | · | 70°F | 1,160 ft | Oahu |
|
Kamananui Str At Pupukea Mil Rd, Hi
20 hours ago · USGS 16325000 |
36 cfs | 1.87 ft | · | 70°F | 615 ft | Oahu |
|
Honokohau Stream Near Honokohau, Hi
20 hours ago · USGS 16620000 |
34 cfs | 2.35 ft | · | 67°F | 886 ft | Maui |
|
Kahakuloa Stream Near Honokohau, Hi
20 hours ago · USGS 16618000 |
31 cfs | 1.07 ft | 70°F | 73°F | 359 ft | Maui |
|
Waihi Stream At Honolulu, Hi
20 hours ago · USGS 16238500 |
29 cfs | 2.44 ft | 74°F | 71°F | 291 ft | Oahu |
|
Waiahole Stream Above Kamehameha Hwy, Hi
4 days ago · USGS 16294100 |
28 cfs | 8.82 ft | · | 72°F | 15 ft | Oahu |
|
Hanawi Stream Near Nahiku, Hi
20 hours ago · USGS 16508000 |
22 cfs | 1.17 ft | · | 69°F | 1,322 ft | Maui |
|
Left Branch Opaekaa Str Nr Kapaa, Hi
20 hours ago · USGS 16071500 |
19 cfs | 1.51 ft | · | 73°F | 473 ft | Kauai |
|
Kahaluu Str Nr Ahuimanu, Hi
20 hours ago · USGS 16283200 |
17 cfs | 1.71 ft | · | 73°F | 145 ft | Oahu |
|
Kawainui Stream Nr Kamuela, Hi
20 hours ago · USGS 16720000 |
9 cfs | 1.61 ft | · | 62°F | 4,073 ft | Hawaii |
|
Honopou Stream Near Huelo, Hi
21 hours ago · USGS 16587000 |
9 cfs | 1.25 ft | · | 70°F | 1,207 ft | Maui |
|
Alakahi Stream Near Kamuela, Hi
21 hours ago · USGS 16725000 |
7 cfs | 2.18 ft | · | 65°F | 3,897 ft | Hawaii |
|
Makaha Str Nr Makaha, Hi
20 hours ago · USGS 16211600 |
0 cfs | 1.29 ft | · | 69°F | 944 ft | Oahu |
|
Waikamoi Str Ab Res At Kula Pl Intake Nr Olinda, Hi
20 hours ago · USGS 16552800 |
0 cfs | · | · | 57°F | 4,471 ft | Maui |
|
Kaunakakai Gulch At Altitude 75 Feet, Hi
20 hours ago · USGS 16414200 |
0 cfs | 4.90 ft | · | 75°F | 88 ft | Molokai |
About Hawaii streamflow
What are river levels like in Hawaii right now?
As of November 1, 2026, Hawaii rivers are running at 1395% of normal across 48 USGS streamgauges, and the Wailuku River At Piihonoua is reporting the highest discharge at 2,050 cfs. The full sortable gauge table is below.
Which Hawaii river is running highest right now?
As of November 1, 2026, the highest discharge in Hawaii is 2,050 cfs on the Wailuku River At Piihonoua. See the sortable gauge table for the full statewide ranking.
Are Hawaii rivers high or low right now?
Compare the statewide percent-of-normal on this page: above 100% means Hawaii rivers are running higher than the seasonal average for the date, below 100% means lower (a dry spell or drought). Each gauge also shows its own percent of median.
Where does the Hawaii streamflow data come from?
The U.S. Geological Survey National Water Information System. USGS streamgauges report continuously (every 15 minutes) and the data is the canonical real-time record for U.S. rivers. Snoflo pulls the latest readings and joins them to a 7-day NOAA weather forecast for each station.
What is cfs?
Cubic feet per second — the standard unit for streamflow. One cfs is about 7.5 gallons per second. Small creeks run at single-digit cfs; the Mississippi at hundreds of thousands.
What does Gauge Height mean?
The water level at the gauge in feet above the reference datum. Used together with discharge to track river state. Flood stage and runnable levels are typically expressed in gauge height (e.g., "flood at 16 ft").
How fresh is the Hawaii data?
USGS streamgauges report every 15 minutes; Snoflo re-pulls throughout the day. The AI briefing regenerates daily.
Can I get a flow alert for a Hawaii gauge?
Yes. Save any USGS gauge as a favorite in the Snoflo iOS app, set a discharge or stage threshold (e.g. "alert me when discharge crosses 2,000 cfs"), and you'll get a push the moment it crosses.
Is this a substitute for an NWS flood warning?
No. Snoflo is informational. For flood life-safety decisions always follow guidance from your local NWS forecast office and state emergency management. Snoflo data is one input among several.