USGS Water-Year Summary 2022
16104200 Hanalei River at Highway 56 Bridge near Hanalei, Kauai, HI
LOCATION - Lat 22°12'38.6", long 159°28'33.4" referenced to North American Datum of 1983, Kauai County, HI, Hydrologic Unit 20070000, attached to the left downstream wing wall of the Hanalei bridge, 1.6 miles northeast of Hanalei and 2.4 miles upstream from the river mouth.
DRAINAGE AREA - 21 mi². from automated delineation using 10-meter National Elevation Dataset digital elevation model data dated September 2006 and Watershed Boundary Dataset dated May 2008, using UTM Zone 4 projection, NAD 83 horizontal datum.
- WDR HI-93-1: 1983-92(M).
PERIOD OF RECORD - 1963 to current year.
GAGE - Crest-stage gage until May 2019. Water-stage recorder 2019 to present. Altitude, 10 feet above mean sea level (from topographic map).
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 14.74 feet, April 15, 2018.