Oahu HUC8 20060000
A 2,892 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
68
Moderate
Drought index
12
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
3%
of 32 reporting
Median flow
4111%
p99 of record
Water assets
2,902
79 springs · 2,447 wells
USGS gauges (39)
- Waikele Str at Wheeler Field, Oahu, HI162126010 cfsp10 · below normal
- Wahiawa Ditch at Wahiawa, Oahu, HI162101009 cfsp36 · normal
- Kaukonahua Str at Waialua, Oahu, HI16210500120 cfsp76 · above normal
- Kaukonahua Stream blw Wahiawa Reservoir, Oahu, HI16210200122 cfsp84 · above normal
- Makaha Str nr Makaha, Oahu, HI162116001 cfsp92 · much above normal
- Makiki Stream at King St. bridge, Oahu, HI162380006 cfsp96 · much above normal
- Punaluu Str abv Punaluu Ditch Intake, Oahu, HI16301050134 cfsp96 · much above normal
- Honouliuli Str at H-1 Freeway nr Waipahu, Oahu, HI162124908 cfsp97 · much above normal
- Waihi Stream at Honolulu, Oahu, HI1623850022 cfsp97 · much above normal
- Kawa Str at Kaneohe, Oahu, HI162650008 cfsp97 · much above normal
- Waiakeakua Str at Honolulu, Oahu, HI1624050052 cfsp98 · much above normal
- Waihee Str nr Kahaluu, Oahu, HI1628420079 cfsp98 · much above normal
- NF Kaukonahua Str abv RB, nr Wahiawa, Oahu, HI16200000205 cfsp98 · much above normal
- SF Kaukonahua Str at E pump, nr Wahiawa, Oahu, HI16208000259 cfsp99 · much above normal
- Waimanalo Str at Waimanalo, Oahu, HI1624900029 cfsp99 · much above normal
- Waikele Str at Waipahu, Oahu, HI16213000425 cfsp99 · much above normal
- Manoa-Palolo Drainage Canal at Moiliili, Oahu, HI16247100301 cfsp99 · much above normal
- Kahaluu Str nr Ahuimanu, Oahu, HI1628320078 cfsp99 · much above normal
- Makawao Str nr Kailua, Oahu, HI1625400060 cfsp99 · much above normal
- Pukele Stream near Honolulu, Oahu, HI1624400032 cfsp99 · much above normal
- Opaeula Str nr Wahiawa, Oahu, HI16345000190 cfsp99 · much above normal
- Kalihi Str nr Honolulu, Oahu, HI16229000146 cfsp99 · much above normal
- Kahana Str at alt 30 ft nr Kahana, Oahu, HI16296500935 cfsp99 · much above normal
- Kamananui Str at Pupukea Mil Rd, Oahu, HI16325000131 cfsp99 · much above normal
- Kaupuni Str at alt 374 ft nr Waianae, Oahu, HI1621180011 cfsp100 · much above normal
- Waikane Str at alt 75 ft at Waikane, Oahu, HI16294900451 cfsp100 · much above normal
- Waiahole Stream above Kamehameha Hwy, Oahu, HI162941002,420 cfsp100 · much above normal
- Heeia Stream at Haiku Valley nr Kaneohe, Oahu, HI16275000144 cfsp100 · much above normal
- Kamananui Str at Maunawai, Oahu, HI16330000513 cfsp100 · much above normal
- N. Halawa Str nr Honolulu, Oahu, HI16226200200 cfsp100 · much above normal
- N. Halawa Str nr Quar. Stn. at Halawa, Oahu, HI16226400157 cfsp100 · much above normal
- Moanalua Stream nr Kaneohe, Oahu, HI16227500113 cfsp100 · much above normal
- South Halawa Stream nr H-3 Freeway, Oahu, HI162267001 cfsno long-term record
- Manoa Stream at Woodlawn Drive, Oahu, HI16241600no readingno long-term record
- Makiki Stream at Archie Baker Park, Oahu, HI16247150122 cfsno long-term record
- Kaneohe Str blw Kamehameha Hwy, Oahu, HI16274100326 cfsno long-term record
- Heeia Stream at Haiku Plantations Dr., Oahu, HI16279200262 cfsno long-term record
- Kaluanui Stream nr Punaluu, Oahu, HI16304200no readingno long-term record
- Mililani Storm Drain A at Mililani, Oahu, HI2126041580127000 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 12 | 0 | 1/32 | p99 |
Top water assets
- 72Hawaiian Volcanic-Rock Aquifer — Pearl Harbor Basin (Oahu)aquifer
- 68Hawaiian Sedimentary Aquifer — Oahu Caprockaquifer
- 66Ku Tree Reservoirreservoir
- 66Nuuanu Dam No. 4reservoir
- 66Nuuanu Reservoir No. 1reservoir
- 66Kaneohe Damreservoir
- 66Wahiawa Damreservoir
- 66Waimanalo 60 Mg Reservoirreservoir
- 65Kalihi Str Nr Honolulu, Oahu, Hiriver
- 65Sf Kaukonahua Str At E Pump, Nr Wahiawa, Oahu, Hiriver