Wailuku River in Hawaii
Around here
Around Wailuku River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
Wailuku River is a 4.7 mile stream. Streamflow is measured at the USGS gauge Wailuku River at Piihonua, HI (site 16704000). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1928 to 2025
Wailuku River typically runs highest in April, at a median 129 cfs, and lowest in February, at 30 cfs. The highest flow on record for any single day is 30,000 cfs, in 2018.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 36 | 16 to 130 |
| February | 30 | 9.8 to 154 |
| March | 81 | 27 to 302 |
| April | 129 | 58 to 326 |
| May | 89 | 42 to 200 |
| June | 52 | 27 to 116 |
| July | 69 | 31 to 170 |
| August | 75 | 36 to 174 |
| September | 57 | 26 to 127 |
| October | 62 | 26 to 150 |
| November | 100 | 39 to 280 |
| December | 70 | 32 to 250 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 96 years of record. Statistics published by the US Geological Survey for Wailuku River at Piihonua, HI (site 16704000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Wailuku River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
