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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
16508000 Hanawi Stream near Nahiku, Maui, HI
LOCATION - Lat 20°48'24.7", long 156°06'51.2" referenced to North American Datum of 1983, Maui County, HI, Hydrologic Unit 20020000, on left bank 200 ft upstream from Koolau Ditch intake and trail, 1.9 mi southwest of Nahiku, and 4.5 mi southeast of Keanae.
DRAINAGE AREA - 3.29 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 1045: 1922-43(M). WSP 1569: Drainage Area. WSP 1719: 1915(M), 1922, 1924-25, 1927, 1930-35, 1937, 1939-40, 1942-43. WDR HI-10-1: Drainage Area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - January 1914 to January 1916, November 1921 to current year. Monthly discharge only April to June 1915, published in WSP 1319.
GAGE - Water-stage recorder. Datum of gage is 1,318 ft above mean sea level (by vertical angles). Prior to November 1, 1921, at site 50 ft downstream at datum 0.12 ft lower.
REMARKS - No diversion upstream of station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 5,850 ft³/s, August 24, 2018, gage height, 12.05 ft; minimum, 0.90 ft³/s, October 28 to November 1, 1984.
