HAWAII FLOW REPORT
Last Updated: February 20, 2026
Streamflow levels across
Hawaii
are currently
59.0% of normal, with the
Wailuku River At Piihonoua
reporting the highest discharge in the state with
209cfs and gauge stage of 3.92 ft.
Meanwhile, the
Wailuku River At Piihonoua
is seeing a spike in streamflows today after experiencing a
-23.44%
increase since yesterday, and currently running at
209cfs.
Maximum gauge stage in the state was last observed at the
Waiahole Stream Above Kamehameha Hwy, currently reporting a stage of
8.84ft.
The
Wailuku River At Piihonoua
in the
Hawaii
watershed
is surging for this time of year at
209cfs, about
-5.22% of normal.
Winter Storm Warnings
February 20 2026
NIIHAU; KAUAI SOUTHWEST; KAUAI MOUNTAINS; ...
Residents and visitors in Hawaii, particularly on the east-facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island, should exercise caution due to a High Surf Advisory in effect until this evening. Surf heights of 8 to 12 feet are expected to create dangerous swimming conditions with strong breaking waves and currents. Additionally, a Flood Watch is in place for Kauai and Niihau through early Saturday morning. Excessive rainfall may lead to flash flooding, particularly in flood-prone roads and low-lying areas, with urban locations facing a risk of significant property damage. It's advised to avoid beachfronts and waterways in the affected regions and stay updated with local weather forecasts.