Hawaii River Levels & Streamflow
As of Sep 20, 2026, Hawaii rivers are running at 391% of normal across 48 USGS gauges — the highest is 600 cfs on the Wailuku River At Piihonoua. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Hawaii.
Streamflow levels across Hawaii are currently 391% of normal, with the Wailuku River At Piihonoua reporting the highest discharge in the state at 600 cfs and a gauge stage of 5.79 ft.
Meanwhile, the Sf Wailua River Nr Lihue is seeing a spike today — up -13% 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.
State-wide streamflow overview
The Hawaii flow picture in four data points -- where the state sits versus historical norms, what's flowing hardest, and what's spiking fastest.
Percent of normal
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Gauge stage 5.79 ft
Biggest 24h spike
Now 346 cfs
Network coverage
USGS gauges feeding 0 named rivers in Hawaii.
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 Sep 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%: 90 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 USGS streamgauges
Every USGS gauge Snoflo tracks in Hawaii. Sortable, quickly filterable. Numeric columns heat-mapped from light to deep. Tap any gauge for its full hydrograph and forecast.
| Streamgage | Streamflow | Gage height | Water temp | Air temp | Elevation | Watershed |
|---|---|---|---|---|---|---|
|
Sf Wailua River Nr Lihue, Hi
18 hours ago · USGS 16060000 |
549 cfs | 5.56 ft | · | 72°F | 251 ft | Kauai |
|
Wailuku River At Piihonoua, Hi
18 hours ago · USGS 16704000 |
381 cfs | 4.90 ft | · | 69°F | 1,084 ft | Hawaii |
|
Waimea River Nr Waimea, Hi
18 hours ago · USGS 16031000 |
337 cfs | 7.81 ft | · | 74°F | 15 ft | Kauai |
|
Hanalei River Nr Hanalei, Hi
18 hours ago · USGS 16103000 |
273 cfs | · | · | 68°F | 74 ft | Kauai |
|
Honolii Stream Nr Papaikou, Hi
18 hours ago · USGS 16717000 |
178 cfs | 3.60 ft | · | 68°F | 1,557 ft | Hawaii |
|
Wainiha River Nr Hanalei, Hi
18 hours ago · USGS 16108000 |
145 cfs | 2.84 ft | · | 61°F | 990 ft | Kauai |
|
Waihee River At Dam Near Waihee, Hi
18 hours ago · USGS 16614000 |
71 cfs | 1.84 ft | · | 68°F | 606 ft | Maui |
|
Iao Stream At Kepaniwai Park Nr Wailuku, Hi
18 hours ago · USGS 16604500 |
69 cfs | · | · | 63°F | 797 ft | Maui |
|
Eb Of Nf Wailua River Nr Lihue, Hi
19 hours ago · USGS 16068000 |
65 cfs | · | · | 69°F | 500 ft | Kauai |
|
Kawaikoi Stream Nr Waimea, Hi
18 hours ago · USGS 16010000 |
59 cfs | 3.09 ft | · | 61°F | 3,422 ft | Kauai |
|
Waiahole Stream Above Kamehameha Hwy, Hi
18 hours ago · USGS 16294100 |
51 cfs | 9.37 ft | · | 79°F | 15 ft | Oahu |
|
Kawainui Stream Nr Kamuela, Hi
18 hours ago · USGS 16720000 |
49 cfs | 2.43 ft | · | 61°F | 4,073 ft | Hawaii |
|
Kahana Str At Alt 30 Ft Nr Kahana, Hi
18 hours ago · USGS 16296500 |
39 cfs | 4.76 ft | · | 76°F | 29 ft | Oahu |
|
Waikele Str At Waipahu, Hi
19 hours ago · USGS 16213000 |
38 cfs | 2.29 ft | 77°F | 75°F | 23 ft | Oahu |
|
Honokohau Stream Near Honokohau, Hi
18 hours ago · USGS 16620000 |
29 cfs | 2.29 ft | · | 67°F | 886 ft | Maui |
|
Oheo Gulch At Dam Near Kipahulu, Hi
18 hours ago · USGS 16501200 |
26 cfs | 1.15 ft | · | 75°F | 431 ft | Maui |
|
Halawa Stream Near Halawa, Hi
19 hours ago · USGS 16400000 |
25 cfs | 2.44 ft | · | 69°F | 258 ft | Molokai |
|
Kamananui Str At Maunawai, Hi
18 hours ago · USGS 16330000 |
24 cfs | 2.62 ft | · | 71°F | 18 ft | Oahu |
|
Waikane Str At Alt 75 Ft At Waikane, Hi
18 hours ago · USGS 16294900 |
20 cfs | 3.00 ft | · | 76°F | 100 ft | Oahu |
|
Sf Kaukonahua Str At E Pump, Hi
19 hours ago · USGS 16208000 |
20 cfs | 1.80 ft | · | 70°F | 882 ft | Oahu |
|
Manoa-Palolo Drainage Canal At Moiliili, Hi
19 hours ago · USGS 16247100 |
19 cfs | 1.05 ft | · | 76°F | 1 ft | Oahu |
|
West Wailuaiki Stream Near Keanae, Hi
18 hours ago · USGS 16518000 |
19 cfs | 1.82 ft | · | 68°F | 1,376 ft | Maui |
|
Waialae Str At Alt 3, Hi
18 hours ago · USGS 16019000 |
18 cfs | 1.30 ft | · | 59°F | 3,857 ft | Kauai |
|
Kamananui Str At Pupukea Mil Rd, Hi
18 hours ago · USGS 16325000 |
15 cfs | 1.32 ft | · | 70°F | 615 ft | Oahu |
|
Hanawi Stream Near Nahiku, Hi
18 hours ago · USGS 16508000 |
15 cfs | · | · | 68°F | 1,322 ft | Maui |
|
Halaulani Str At Alt 400 Ft Nr Kilauea, Hi
18 hours ago · USGS 16097500 |
13 cfs | 1.26 ft | · | 69°F | 405 ft | Kauai |
|
Opaeula Str Nr Wahiawa, Hi
18 hours ago · USGS 16345000 |
12 cfs | 2.08 ft | · | 69°F | 1,160 ft | Oahu |
|
Kahakuloa Stream Near Honokohau, Hi
18 hours ago · USGS 16618000 |
11 cfs | · | 71°F | 72°F | 359 ft | Maui |
|
Nf Kaukonahua Str Abv Rb, Hi
19 hours ago · USGS 16200000 |
11 cfs | 1.99 ft | · | 69°F | 1,233 ft | Oahu |
|
Waihee Str Nr Kahaluu, Hi
18 hours ago · USGS 16284200 |
9 cfs | 2.94 ft | · | 72°F | 175 ft | Oahu |
|
Waiakeakua Str At Honolulu, Hi
18 hours ago · USGS 16240500 |
8 cfs | · | · | 74°F | 277 ft | Oahu |
|
Kalihi Str Nr Honolulu, Hi
18 hours ago · USGS 16229000 |
7 cfs | 2.44 ft | · | 74°F | 490 ft | Oahu |
|
Waimanalo Str At Waimanalo, Hi
18 hours ago · USGS 16249000 |
6 cfs | 7.12 ft | · | 78°F | 20 ft | Oahu |
|
Honopou Stream Near Huelo, Hi
19 hours ago · USGS 16587000 |
5 cfs | 1.07 ft | · | 69°F | 1,207 ft | Maui |
|
Makawao Str Nr Kailua, Hi
18 hours ago · USGS 16254000 |
5 cfs | 6.97 ft | · | 76°F | 79 ft | Oahu |
|
Kaluanui Stream Nr Punaluu, Hi
2 days ago · USGS 16304200 |
5 cfs | 4.01 ft | · | 74°F | 124 ft | Oahu |
|
Kahaluu Str Nr Ahuimanu, Hi
18 hours ago · USGS 16283200 |
4 cfs | 1.34 ft | · | 76°F | 145 ft | Oahu |
|
N. Halawa Str Nr Honolulu, Hi
19 hours ago · USGS 16226200 |
3 cfs | 6.58 ft | · | 76°F | 163 ft | Oahu |
|
Alakahi Stream Near Kamuela, Hi
4 days ago · USGS 16725000 |
3 cfs | 1.94 ft | · | 66°F | 3,897 ft | Hawaii |
|
Left Branch Opaekaa Str Nr Kapaa, Hi
18 hours ago · USGS 16071500 |
3 cfs | 1.00 ft | · | 71°F | 473 ft | Kauai |
|
Waihi Stream At Honolulu, Hi
18 hours ago · USGS 16238500 |
3 cfs | 1.88 ft | 74°F | 74°F | 291 ft | Oahu |
|
N. Halawa Str Nr Quar. Stn. At Halawa, Hi
18 hours ago · USGS 16226400 |
2 cfs | 3.00 ft | · | 76°F | 66 ft | Oahu |
|
Pukele Stream Near Honolulu, Hi
18 hours ago · USGS 16244000 |
2 cfs | 1.08 ft | 76°F | 75°F | 364 ft | Oahu |
|
Haiku Str Nr Heeia, Hi
18 hours ago · USGS 16275000 |
2 cfs | 1.19 ft | · | 74°F | 273 ft | Oahu |
|
Moanalua Stream Nr Kaneohe, Hi
19 hours ago · USGS 16227500 |
1 cfs | 2.53 ft | · | 74°F | 662 ft | Oahu |
|
Makaha Str Nr Makaha, Hi
18 hours ago · USGS 16211600 |
1 cfs | 1.30 ft | · | 69°F | 944 ft | Oahu |
|
Waikamoi Str Ab Res At Kula Pl Intake Nr Olinda, Hi
18 hours ago · USGS 16552800 |
0 cfs | · | · | 55°F | 4,471 ft | Maui |
|
Kaunakakai Gulch At Altitude 75 Feet, Hi
18 hours ago · USGS 16414200 |
0 cfs | 4.90 ft | · | 76°F | 88 ft | Molokai |
See every Hawaii gauge ranked against normal.
- Percentile rank & % of median for all 48 gauges
- 15-day PULSE forecast on every gauge
- Custom flow alerts & full daily history
About Hawaii streamflow
What are river levels like in Hawaii right now?
As of September 20, 2026, Hawaii rivers are running at 391% of normal across 48 USGS streamgauges, and the Wailuku River At Piihonoua is reporting the highest discharge at 600 cfs. The full sortable gauge table is below.
Which Hawaii river is running highest right now?
As of September 20, 2026, the highest discharge in Hawaii is 600 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.
Streamflow in every state
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