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Water-Year Summary for Site 16647000

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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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
16647000 Ukumehame Gulch nr Olowalu, Maui, HI
LOCATION - Lat 20°49'09.3", long 156°35'00.6" referenced to North American Datum of 1983, Maui County, HI, Hydrologic Unit 20020000, 0.5 mi upstream from the Ukumehame Gulch diversion intake, 0.68 mi northeast of the Ukumehame Reservoirs, 1.4 mi southeast of Olowalu Stream diversion intake, and 2 mi northwest of Ukumehame Beach State Park.
DRAINAGE AREA - 3.71 mi². delineated in StreamStats 6/11/2018.

Basin Characteristic Value Unit
Mean basin elevation 2270 feet
Minimum basin elevation 415 feet
Maximum basin elevation 4610 feet
Length of longest flow path 3.33 miles
Relief (max elevation - min elevation) 4200 feet
Relative relief (relief divided by perimeter) 403 feet per mi
Mean annual precipitation 83.8 inches
REVISIONS HISTORY - Instantaneous gage height and discharge data were revised for June 29, 2018, and discharge data was revised September 20, 2018 on July 11, 2019.
PERIOD OF RECORD - 1911-1912, 1913-1919, April 2018 to current year.
GAGE - Water-stage recorder and concrete control. Elevation of gage is 400 feet above mean sea level (from USGS National Map, August 2019).
REMARKS - This is a continuous low-flow station with a maximum reporting limit of 40 ft³/s from April 2018 to current year. No diversions upstream.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 156 ft³/s, July 28 and 29, 1914; minimum daily, 2.8 ft³/s, on December 9, 1919.