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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
76
Healthy
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
6%
of 33 reporting
Median flow
191%
p73 of record
Water assets
2,902
79 springs · 2,447 wells
USGS gauges (39)
- Waikele Str at Wheeler Field, Oahu, HI162126010 cfsp10 · below normal
- Moanalua Stream nr Kaneohe, Oahu, HI162275000 cfsp10 · below normal
- NF Kaukonahua Str abv RB, nr Wahiawa, Oahu, HI162000005 cfsp36 · normal
- Kawa Str at Kaneohe, Oahu, HI162650001 cfsp45 · normal
- Heeia Stream at Haiku Valley nr Kaneohe, Oahu, HI162750002 cfsp56 · normal
- Kahana Str at alt 30 ft nr Kahana, Oahu, HI1629650027 cfsp59 · normal
- N. Halawa Str nr Honolulu, Oahu, HI162262002 cfsp60 · normal
- Waikele Str at Waipahu, Oahu, HI1621300026 cfsp61 · normal
- Wahiawa Ditch at Wahiawa, Oahu, HI1621010010 cfsp62 · normal
- Kaukonahua Str at Waialua, Oahu, HI1621050043 cfsp63 · normal
- Kaukonahua Stream blw Wahiawa Reservoir, Oahu, HI1621020052 cfsp64 · normal
- Opaeula Str nr Wahiawa, Oahu, HI163450008 cfsp66 · normal
- Makaha Str nr Makaha, Oahu, HI162116000 cfsp68 · normal
- Waihi Stream at Honolulu, Oahu, HI162385002 cfsp68 · normal
- Kaluanui Stream nr Punaluu, Oahu, HI163042002 cfsp70 · normal
- Kalihi Str nr Honolulu, Oahu, HI162290004 cfsp72 · normal
- Kahaluu Str nr Ahuimanu, Oahu, HI162832004 cfsp73 · normal
- Punaluu Str abv Punaluu Ditch Intake, Oahu, HI1630105026 cfsp74 · normal
- Manoa-Palolo Drainage Canal at Moiliili, Oahu, HI1624710012 cfsp74 · normal
- Pukele Stream near Honolulu, Oahu, HI162440001 cfsp76 · above normal
- Waiakeakua Str at Honolulu, Oahu, HI162405005 cfsp80 · above normal
- Waiahole Stream above Kamehameha Hwy, Oahu, HI1629410053 cfsp82 · above normal
- Honouliuli Str at H-1 Freeway nr Waipahu, Oahu, HI162124903 cfsp82 · above normal
- SF Kaukonahua Str at E pump, nr Wahiawa, Oahu, HI1620800020 cfsp82 · above normal
- Kamananui Str at Pupukea Mil Rd, Oahu, HI163250008 cfsp82 · above normal
- N. Halawa Str nr Quar. Stn. at Halawa, Oahu, HI162264001 cfsp83 · above normal
- Waihee Str nr Kahaluu, Oahu, HI1628420010 cfsp84 · above normal
- Kamananui Str at Maunawai, Oahu, HI1633000011 cfsp84 · above normal
- Makawao Str nr Kailua, Oahu, HI162540006 cfsp87 · above normal
- Waikane Str at alt 75 ft at Waikane, Oahu, HI1629490019 cfsp87 · above normal
- Makiki Stream at King St. bridge, Oahu, HI162380003 cfsp90 · much above normal
- Waimanalo Str at Waimanalo, Oahu, HI162490007 cfsp91 · much above normal
- Kaupuni Str at alt 374 ft nr Waianae, Oahu, HI1621180016 cfsp100 · much above normal
- South Halawa Stream nr H-3 Freeway, Oahu, HI1622670015 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, HI1627410018 cfsno long-term record
- Heeia Stream at Haiku Plantations Dr., Oahu, HI162792007 cfsno long-term record
- Mililani Storm Drain A at Mililani, Oahu, HI2126041580127000 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 0 | 0 | 2/33 | p73 |
| 2026-10-20 | 0 | 0 | 1/33 | p68 |
| 2026-10-19 | 0 | 0 | 1/33 | p68 |
| 2026-10-18 | 0 | 0 | 1/33 | p78 |
| 2026-10-17 | 0 | 0 | 1/33 | p81 |
| 2026-10-16 | 0 | 0 | 1/33 | p77 |
| 2026-10-15 | 0 | 0 | 1/33 | p72 |
| 2026-10-14 | 0 | 0 | 1/33 | p77 |
| 2026-10-13 | 0 | 0 | 1/32 | p76 |
| 2026-10-12 | 0 | 0 | 1/32 | p77 |
| 2026-10-11 | 0 | 0 | 1/32 | p82 |
| 2026-10-10 | 0 | 0 | 1/32 | p84 |
| 2026-10-09 | 0 | 0 | 0/32 | p93 |
| 2026-10-08 | 0 | 0 | 1/32 | p83 |
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