USGS Water-Year Summary for Site 16238000

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	Available Parameters
	00060 Discharge(Mean)
	63680 Turbidity, Form Neph(Mean) [ANALITE]
	63680 Turbidity, Form Neph(Mean) [DTS-12]
	80154 Suspnd sedmnt conc(Mean)
	80155 Suspnd sedmnt disch(Mean)
	80297 SS load, regres ss(Mean)
	99409 Susp sediment,wu,est(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

16238000 Makiki Stream at King St. bridge, Oahu, HI

LOCATION - Lat 21°17'47.9", long 157°50'12.3" referenced to North American Datum of 1983, Honolulu County, HI, Hydrologic Unit 20060000, on right bank, just downstream from King Street bridge at the intersection of Kalakaua Ave., and 0.8 miles east of McKinley High School in Honolulu.

DRAINAGE AREA - 2.47 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 - WDR HI-12-1: 2011 (M), Drainage Area. WDR-12-01: Daily suspended-sediment concentration and discharge for May 2, 2011. Turbidity data revised on August 31, 2019 (0200-0500) and August 25, 2019 (0745) to August 26, 2019 (0845) on March 30, 2020. Turbidity data on November 4, 2018 was revised on May 10, 2022.

SURFACE-WATER RECORDS

PERIOD OF RECORD - 2004 to 2005 (annual maximum), February 2010 to current year.

GAGE - Water-stage recorder. Datum of gage is 10 ft above sea level, from topographic map.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, about 1,710 ft³/s, July 24, 2016, gage height, 8.95 ft.; minimum discharge, 0.05 ft³/s, September 4, 2019.

WATER-QUALITY RECORDS

PERIOD OF RECORD - SUSPENDED SEDIMENT: October 2010 to current year. TURBIDITY, water, unfiltered, monochrome near infa-red LED light, 780-900 nm, detection angle 90 +/- 2.5 degrees: Maximum, 1780 formazin nephelometric units (FNU),: September 2015 to current year.

PERIOD OF DAILY RECORD - SUSPENDED SEDIMENT DISCHARGE: October 2010 to current year. TURBIDITY, water, unfiltered, monochrome near infa-red LED light, 780-900 nm, detection angle 90 +/- 2.5 degrees: September 2015 to current year.

INSTRUMENTATION - Automatic pumping sediment sampler October 2010 to current year. Turbidity sensor September 2015 to current year.

EXTREMES FOR PERIOD OF RECORD - SUSPENDED SEDIMENT CONCENTRATION: Maximum daily mean, 609 mg/L, December 26, 2015; minimum, 0.4 mg/L, August 19, 2012. SUSPENDED SEDIMENT DISCHARGE: Maximum daily, 303 tons, December 13, 2011; minimum, 0 tons on many days. TURBIDITY, water, unfiltered, monochrome near infa-red LED light, 780-900 nm, detection angle 90 +/- 2.5 degrees: Maximum, 4,540 formazin nephelometric units (FNU), March 28, 2020; minimum, 0.0 FNU on multiple days.