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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 2023
16848500 Maulap River near Agat, Guam
LOCATION - Lat 13°21'19.6", long -144°15'2.6" referenced to North American Datum of 1983, Guam County, GM, Hydrologic Unit 22010000, in controlled area of the United States Naval Magazine, Guam, on the right bank, 100 ft upstream from Fena Valley Reservoir, and 3.2 miles southeast of Agat.
DRAINAGE AREA - 1.18 mi². from automated delineation using 5-meter digital elevation model, using UTM Zone 55N projection, NAD83 HARN horizontal datum. The 5-m digital elevation model was derived from a digital terrain model, created by Joint Airborne Lidar Bathymetry Technical Center of Expertise, dated May 2007.
REVISIONS HISTORY - WRD HI-73-1:1972, WRD HI-75-1:Drainage Area. WDR HI-10-1: Drainage Area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - January 1972 to March 1994, July 1997 to current year. October 1990 to September 2005, unpublished records are in the files of the US Geological Survey.
GAGE - Water-stage recorder. Elevation of gage is 130 ft above mean sea level from topographic map.(1:24,000 Agat Quadrangle, 1968)
REMARKS - No diversions upstream.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge: 5,340 ft³/s, July 5, 2002, gage height, 11.23 ft, from rating curve extended above 23 ft³/s, on basis of slope-area measurements at gage heights 8.21 ft, 9.2 ft, and 11.23 ft. Minimum discharge: 0.37 ft³/s , on many days.
