USGS Water-Year Summary 2024

16211600 Makaha Stream near Makaha, Oahu, HI

LOCATION - Lat 21°30'05.7", long 158°10'48.6" referenced to North American Datum of 1983, Honolulu County, HI, Hydrologic Unit 20060000, on right bank, 0.8 mi northeast of Kaneaki Heiau, and 2.9 mi northeast of Makaha.

DRAINAGE AREA - 2.12 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 1937: Drainage Area. WDR HI-10-1: Drainage Area. WDR HI-13-1: Drainage Area. Discharge data was revised from January 31 to April 3, 2019 on November 1, 2019.  Estimated discharge value on October 10, 2019 (1730) was removed on August 24, 2020.  Gage height and discharge values were revised for April 29, 2019 (1520), October 6, 2019 (1820), January 11, 2020 (2057), February 6, 2020 (1137), and March 16, 2020 (1745) on October 6, 2020.

SURFACE-WATER RECORDS

PERIOD OF RECORD - July 1959 to current year.

GAGE - Water-stage recorder and concrete-masonry control. Datum of gage is 938.64 ft above mean sea level (Waianae Plantation benchmark).

REMARKS - Records fair except for 40 cfs and above which is poor. Wells upstream of station may influence flows at gage. Recording rain gage located at station.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 2,680 ft³/s, November 14, 1996, gage height, 9.54 ft, from high-water profile of slope-area measurement; no flow at times