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Water-Year Summary for Site 16717700

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Available Parameters
00060 Discharge(Mean)  

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

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USGS Water-Year Summary 2023
16717700 Hakalau Stream nr alt 1300 ft, HI
LOCATION - Lat 19°52'18.12", long 155°10'00.54" referenced to North American Datum of 1983, Hawaii County, HI, Hydrologic Unit 20010000, 1.5 mi NW of Akaka Falls State Park, 2.95 mi SW of Hakalau Beach Park, 3.00 mi W of Honomu town.
DRAINAGE AREA - 1.75 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.

Basin Characteristic Value Unit
Mean basin elevation 2760 feet
Minimum basin elevation 1310 feet
Maximum basin elevation 4060 feet
Length of longest flow path 6.87 miles
Relief (max elevation - min elevation) 2750 feet
Relative relief (relief divided by perimeter) 161 feet per mi
Mean annual precipitation 199 inches
REVISIONS HISTORY - Instantaneous discharge data was revised from October 31, 2018 to June 10, 2019 on July 16, 2019; and from September 15 to October 20, 2019 on June 16, 2020.
PERIOD OF RECORD - October 2018 to current year.
GAGE - Water-stage recorder and natural control. Elevation of gage is 1,300 feet above mean sea level (from USGS National Map, August 2019).
REMARKS - No diversions upstream. This is a continuous low-flow station with a maximum reporting limit of 26 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Minimum daily discharge, 0.08 ft³/s, on several days; maximum not determined.