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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
16400000 Halawa Stream near Halawa, Molokai, HI
LOCATION - Lat 21°09'19.8", long 156°45'43.1" referenced to North American Datum of 1983, Maui County, HI, Hydrologic Unit 20050000, on right bank 600 ft downstream from Hipuapua Stream, and 1.5 mi west of Halawa.
DRAINAGE AREA - 4.68 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 1319: 1928, 1929(M), 1930-31, 1938-50(M), Drainage Area. WSP 1719: 1954. WDR HI-10-1: Drainage Area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1917 to July 1932, November 1937 to current year.
GAGE - Water-stage recorder. Elevation of gage is 210 ft above mean sea level (from topographic map). Prior to June 25, 1923, at site 350 ft upstream of gage at different datum. June 25, 1923 to July 18, 1932, and November 17, 1937 to February 3, 1965, at present site at datum 2.00 ft higher.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 26,900 ft³/s, February 4, 1965, gage height, 19.91 ft, from floodmarks, from rating curve extended above 163 ft³/s on basis of slope-area measurement of peak flow; minimum, 0.76 ft³/s, about November 23, 1962.
