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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
16108000 Wainiha River near Hanalei, Kauai, HI
LOCATION - Lat 22°08'09.2", long 159°33'28.3" referenced to North American Datum of 1983, Kauai County, HI, Hydrologic Unit 20070000, on left bank at Puwainui Falls, 1.5 mi upstream from Wainiha power plant intake, and 6.0 mi southwest of Hanalei.
DRAINAGE AREA - 10.44 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.
REVISIONS HISTORY - WSP 770: 1932-33. WSP 1719: 1916. WSP 1937: 1918. WSP 2137: Drainage Area. WRD HI-00-1: 1953-99 (P). WDR-HI-10-1: Drainage Area. Unit value peak data was revised for February 2, 13, September 16, November 16, 2019, March 16, 2020, and March 9, 2021 on September 29, 2021.
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 1952 to February 1956, October 1957 to current year.
GAGE - Water-stage recorder. Elevation of gage is 960 ft above mean sea level (from topographic map).
REMARKS - No diversion upstream.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 20,200 ft³/s, April 19, 1974, gage height, 9.47 ft, from rating curve extended above 1,100 ft³/s
on basis of slope-area measurement at gage height 7.72 ft; minimum, 31 ft³/s, September 29, 1965.
