USGS Water-Year Summary for Site 04087204

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

04087204 OAK CREEK AT SOUTH MILWAUKEE, WI

LOCATION - Lat 42°55'30", long 87°52'12" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 sec.2, T.5 N., R.22 E., Milwaukee County, WI, Hydrologic Unit 04040002, on left bank 25 ft downstream from 15th Avenue bridge in South Milwaukee and 2.8 mi upstream from mouth.

DRAINAGE AREA - 25 mi².

REVISIONS HISTORY - WDR WI-80-1: 1979 (average discharge).

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1963 to current year.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 631.13 ft, NAVD of 1988.

REMARKS - Records are considered good except for estimated daily discharges which are poor and other periods as noted. For records status prior to October 1, 2013, see remarks printed in annual water-data reports. The station is located in a highly urbanized area and is affected by rapid rises from storm drains which discharge into the creek just upstream from the station. Peak runoff normally occurs from these drains prior to the peak runoff from the remainder of the basin. Gage-height telemeter at station.

WATER-QUALITY RECORDS

PERIOD OF RECORD - May 2011 to September 2011 (discontinued).

PERIOD OF DAILY RECORD - WATER TEMPERATURE: May 2011 to September 2011 (discontinued). SPECIFIC CONDUCTANCE: May 2011 to September 2011 (discontinued). DISSOLVED OXYGEN: May 2011 to September 2011 (discontinued).

INSTRUMENTATION - Continuous water quality monitor with water temperature, specific conductivity and dissolved oxygen sensors: May 2011 to September 2011 (discontinued).

EXTREMES FOR CURRENT YEAR - WATER TEMPERATURE: Maximum observed, 25.8°C, July 21; minimum observed, 7.7°C, May 16. SPECIFIC CONDUCTANCE: Maximum observed, 1,540 uS/cm, May 22; minimum observed, 92 uS/cm, Sept. 24. DISSOLVED OXYGEN: Maximum observed, 17.1 mg/L, May 20; minimum observed, 2.0 mg/L, Aug.3.