Kauai HUC8 20070000
A 2,402 km² sub-basin of the Hawaii region in HI. Drought coverage is from the US Drought Monitor (map of 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
71
Moderate
Drought index
20
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 10 reporting
Median flow
373%
p88 of record
Water assets
1,266
12 springs · 534 wells
USGS gauges (13)
- Left Branch Opaekaa Str nr Kapaa, Kauai, HI160715002 cfsp76 · above normal
- SF Wailua River nr Lihue, Kauai, HI16060000146 cfsp80 · above normal
- Hanalei River nr Hanalei, Kauai, HI16103000354 cfsp83 · above normal
- Waialae Str at alt 3,820 ft nr Waimea, Kauai, HI1601900012 cfsp85 · above normal
- EB of NF Wailua River nr Lihue, Kauai, HI1606800080 cfsp87 · above normal
- Kawaikoi Stream nr Waimea, Kauai, HI1601000035 cfsp89 · above normal
- Halaulani Str at alt 400 ft nr Kilauea, Kauai, HI1609750024 cfsp91 · much above normal
- Waimea River US of Kekaha-Waiahulu Int., Kauai, HI1601600058 cfsp91 · much above normal
- Wainiha River nr Hanalei, Kauai, HI16108000453 cfsp95 · much above normal
- Waimea River near Waimea, Kauai, HI16031000197 cfsp97 · much above normal
- Right Branch Lawai Stream nr Umauma Rd, Kauai, HI160523502 cfsno long-term record
- Waiahi Str US Upper Powerhouse, Kauai, HI16057900106 cfsno long-term record
- NF Wailua Riv abv N Wailua Ditch Int, Kauai, HI16060950no readingno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 20 | 0 | 0/10 | p88 |
Top water assets
- 67Alexanderreservoir
- 67Waialae Str At Alt 3,820 Ft Nr Waimea, Kauai, Hiriver
- 67Kawaikoi Stream Nr Waimea, Kauai, Hiriver
- 66Omao Reservoirreservoir
- 66Kaneha Reservoirreservoir
- 66Elima Reservoirreservoir
- 66Aepoekolu Reservoirreservoir
- 66Piwai Reservoirreservoir
- 66Mimino Reservoirreservoir
- 66Aepoalua Reservoirreservoir