Hawaii River Levels & Streamflow
As of Aug 11, 2026, Hawaii rivers are running at 650% of normal across 49 USGS gauges — the highest is 594 cfs on the Waihee River At Dam Near Waihee. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Hawaii.
Streamflow levels across Hawaii are currently 650% of normal, with the Waihee River At Dam Near Waihee reporting the highest discharge in the state at 594 cfs and a gauge stage of 3.62 ft.
Meanwhile, the Kahakuloa Stream Near Honokohau is seeing a spike today — up 4331% 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
**COASTAL FLOOD ALERT - AUGUST 11-12, 2026**
Hawaii residents across all islands should prepare for minor coastal flooding through Wednesday afternoon as peak monthly high tides combine with above-normal water levels. The National Weather Service warns that vulnerable low-lying coastal areas—including roadways, docks, boat ramps, and beaches in communities statewide—face potential inundation during daily afternoon high tides. Expect flooding of normally dry beaches, minor coastal erosion, and saltwater damage to infrastructure. Additionally, forecasters are monitoring a tropical system southeast of Hawaii that could bring late-week impacts to the islands. Residents in coastal areas should avoid flooded roadways and secure waterfront property immediately.
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 3.62 ft
Biggest 24h spike
Now 514 cfs
Network coverage
USGS gauges feeding 0 named rivers in Hawaii.
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 |
|---|---|---|---|---|---|---|
|
Wailuku River At Piihonoua, Hi
11 hours ago · USGS 16704000 |
436 cfs | 5.15 ft | · | 67°F | 1,084 ft | Hawaii |
|
Hanalei River Nr Hanalei, Hi
12 hours ago · USGS 16103000 |
305 cfs | · | · | 72°F | 74 ft | Kauai |
|
Honolii Stream Nr Papaikou, Hi
12 hours ago · USGS 16717000 |
179 cfs | 3.80 ft | · | 66°F | 1,557 ft | Hawaii |
|
Sf Wailua River Nr Lihue, Hi
11 hours ago · USGS 16060000 |
175 cfs | 3.56 ft | · | 74°F | 251 ft | Kauai |
|
Waikele Str At Waipahu, Hi
12 hours ago · USGS 16213000 |
124 cfs | 2.84 ft | 77°F | 76°F | 23 ft | Oahu |
|
Wainiha River Nr Hanalei, Hi
12 hours ago · USGS 16108000 |
116 cfs | 2.84 ft | · | 71°F | 990 ft | Kauai |
|
Iao Stream At Kepaniwai Park Nr Wailuku, Hi
12 hours ago · USGS 16604500 |
87 cfs | 1.31 ft | · | 58°F | 797 ft | Maui |
|
Waihee River At Dam Near Waihee, Hi
12 hours ago · USGS 16614000 |
81 cfs | 1.93 ft | · | 69°F | 606 ft | Maui |
|
Kahana Str At Alt 30 Ft Nr Kahana, Hi
11 hours ago · USGS 16296500 |
55 cfs | 4.91 ft | · | 76°F | 29 ft | Oahu |
|
Honokohau Stream Near Honokohau, Hi
11 hours ago · USGS 16620000 |
44 cfs | 2.38 ft | · | 69°F | 886 ft | Maui |
|
Waimea River Nr Waimea, Hi
11 hours ago · USGS 16031000 |
40 cfs | 6.33 ft | · | 74°F | 15 ft | Kauai |
|
Eb Of Nf Wailua River Nr Lihue, Hi
12 hours ago · USGS 16068000 |
39 cfs | · | · | 73°F | 500 ft | Kauai |
|
Sf Kaukonahua Str At E Pump, Hi
12 hours ago · USGS 16208000 |
36 cfs | 2.03 ft | · | 72°F | 882 ft | Oahu |
|
Kawainui Stream Nr Kamuela, Hi
11 hours ago · USGS 16720000 |
32 cfs | 2.16 ft | · | 60°F | 4,073 ft | Hawaii |
|
Halawa Stream Near Halawa, Hi
12 hours ago · USGS 16400000 |
30 cfs | 2.56 ft | · | 69°F | 258 ft | Molokai |
|
Alakahi Stream Near Kamuela, Hi
12 hours ago · USGS 16725000 |
23 cfs | 2.77 ft | · | 64°F | 3,897 ft | Hawaii |
|
West Wailuaiki Stream Near Keanae, Hi
11 hours ago · USGS 16518000 |
23 cfs | 1.93 ft | · | 71°F | 1,376 ft | Maui |
|
Manoa-Palolo Drainage Canal At Moiliili, Hi
12 hours ago · USGS 16247100 |
23 cfs | 1.09 ft | · | 77°F | 1 ft | Oahu |
|
Halaulani Str At Alt 400 Ft Nr Kilauea, Hi
11 hours ago · USGS 16097500 |
20 cfs | 1.43 ft | · | 73°F | 405 ft | Kauai |
|
Kahakuloa Stream Near Honokohau, Hi
11 hours ago · USGS 16618000 |
20 cfs | · | 71°F | 75°F | 359 ft | Maui |
|
Hanawi Stream Near Nahiku, Hi
11 hours ago · USGS 16508000 |
19 cfs | 1.08 ft | · | 69°F | 1,322 ft | Maui |
|
Nf Kaukonahua Str Abv Rb, Hi
12 hours ago · USGS 16200000 |
16 cfs | 2.11 ft | · | 70°F | 1,233 ft | Oahu |
|
Opaeula Str Nr Wahiawa, Hi
11 hours ago · USGS 16345000 |
15 cfs | 2.15 ft | · | 70°F | 1,160 ft | Oahu |
|
Oheo Gulch At Dam Near Kipahulu, Hi
11 hours ago · USGS 16501200 |
13 cfs | · | · | 74°F | 431 ft | Maui |
|
Waikane Str At Alt 75 Ft At Waikane, Hi
11 hours ago · USGS 16294900 |
13 cfs | 3.30 ft | · | 76°F | 100 ft | Oahu |
|
Honopou Stream Near Huelo, Hi
12 hours ago · USGS 16587000 |
10 cfs | 1.20 ft | · | 69°F | 1,207 ft | Maui |
|
N. Halawa Str Nr Honolulu, Hi
12 hours ago · USGS 16226200 |
10 cfs | 6.86 ft | · | 75°F | 163 ft | Oahu |
|
Kawaikoi Stream Nr Waimea, Hi
11 hours ago · USGS 16010000 |
9 cfs | 2.21 ft | · | 62°F | 3,422 ft | Kauai |
|
Waihee Str Nr Kahaluu, Hi
11 hours ago · USGS 16284200 |
9 cfs | 2.93 ft | · | 67°F | 175 ft | Oahu |
|
Kamananui Str At Pupukea Mil Rd, Hi
11 hours ago · USGS 16325000 |
9 cfs | 1.07 ft | · | 71°F | 615 ft | Oahu |
|
Waiahole Stream Above Kamehameha Hwy, Hi
11 hours ago · USGS 16294100 |
8 cfs | 9.06 ft | · | 76°F | 15 ft | Oahu |
|
Kamananui Str At Maunawai, Hi
11 hours ago · USGS 16330000 |
8 cfs | 2.20 ft | · | 74°F | 18 ft | Oahu |
|
N. Halawa Str Nr Quar. Stn. At Halawa, Hi
11 hours ago · USGS 16226400 |
8 cfs | 3.37 ft | · | 76°F | 66 ft | Oahu |
|
Waiakeakua Str At Honolulu, Hi
11 hours ago · USGS 16240500 |
7 cfs | · | · | 72°F | 277 ft | Oahu |
|
Waialae Str At Alt 3, Hi
12 hours ago · USGS 16019000 |
5 cfs | 1.00 ft | · | 62°F | 3,857 ft | Kauai |
|
Kalihi Str Nr Honolulu, Hi
13 hours ago · USGS 16229000 |
5 cfs | 2.37 ft | · | 75°F | 490 ft | Oahu |
|
Makawao Str Nr Kailua, Hi
11 hours ago · USGS 16254000 |
4 cfs | 6.90 ft | · | 76°F | 79 ft | Oahu |
|
Kaluanui Stream Nr Punaluu, Hi
12 hours ago · USGS 16304200 |
4 cfs | 3.92 ft | · | 74°F | 124 ft | Oahu |
|
Kahaluu Str Nr Ahuimanu, Hi
11 hours ago · USGS 16283200 |
4 cfs | 1.32 ft | · | 76°F | 145 ft | Oahu |
|
Waihi Stream At Honolulu, Hi
11 hours ago · USGS 16238500 |
3 cfs | 1.90 ft | 74°F | 72°F | 291 ft | Oahu |
|
Haiku Str Nr Heeia, Hi
11 hours ago · USGS 16275000 |
3 cfs | 1.23 ft | · | 76°F | 273 ft | Oahu |
|
Waimanalo Str At Waimanalo, Hi
11 hours ago · USGS 16249000 |
2 cfs | 7.02 ft | · | 77°F | 20 ft | Oahu |
|
Moanalua Stream Nr Kaneohe, Hi
12 hours ago · USGS 16227500 |
2 cfs | 2.64 ft | · | 73°F | 662 ft | Oahu |
|
Left Branch Opaekaa Str Nr Kapaa, Hi
11 hours ago · USGS 16071500 |
2 cfs | · | · | 73°F | 473 ft | Kauai |
|
Pukele Stream Near Honolulu, Hi
11 hours ago · USGS 16244000 |
2 cfs | 1.06 ft | 76°F | 77°F | 364 ft | Oahu |
|
Waikamoi Str Ab Res At Kula Pl Intake Nr Olinda, Hi
11 hours ago · USGS 16552800 |
1 cfs | · | · | 59°F | 4,471 ft | Maui |
|
Makaha Str Nr Makaha, Hi
11 hours ago · USGS 16211600 |
0 cfs | 1.36 ft | · | 72°F | 944 ft | Oahu |
|
Paauau Gulch At Pahala, Hi
11 hours ago · USGS 16770500 |
0 cfs | · | · | 70°F | 982 ft | Hawaii |
|
Kaunakakai Gulch At Altitude 75 Feet, Hi
12 hours ago · USGS 16414200 |
0 cfs | 4.90 ft | · | 75°F | 88 ft | Molokai |
See every Hawaii gauge ranked against normal.
- Percentile rank & % of median for all 49 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 August 11, 2026, Hawaii rivers are running at 650% of normal across 49 USGS streamgauges, and the Waihee River At Dam Near Waihee is reporting the highest discharge at 594 cfs. The full sortable gauge table is below.
Which Hawaii river is running highest right now?
As of August 11, 2026, the highest discharge in Hawaii is 594 cfs on the Waihee River At Dam Near Waihee. 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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