USGS Water-Year Summary for Site 04087088

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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)
	63680 Turbidity, Form Neph(Mean,Min.,Max.)

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

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USGS Water-Year Summary 2024

04087088 UNDERWOOD CREEK AT WAUWATOSA, WI

LOCATION - Lat 43°03'17", long 88°02'46" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 sec.20, T.7 N., R.21 E., Milwaukee County, WI, Hydrologic Unit 04040003, 325 ft east of highway 100 on right bank, 0.4 mi upstream of the Chicago, Milwaukee, St. Paul and Pacific Railroad bridge, 0.2 mi downstream from the Mayfair Rd. (Hwy 100) bridge, on Milwaukee County Park Commission property, at Wauwatosa, and 1.6 mi upstream from mouth. Water quality data was collected here from February 11, 2010 to present.

DRAINAGE AREA - 18.1 mi².

REVISIONS HISTORY - WDR WI-77-1: Drainage area. WRD WI-85-1: 1984. WRD WI-94-1: 1993(M). WRD WI-98-1: 1978(M, date).

SURFACE-WATER RECORDS

PERIOD OF RECORD - November 1974 to November 1979, July 1980 to current year. Unpublished daily discharge records from November 1974 to February 1975 in District files.

GAGE -

Oct. 3, 2016 to present: Water-stage recorder and crest-stage gage. Datum of gage is 680.14 ft NAVD88. The NAVD of 1988 datum of gage was determined by a Real-Time Network survey using the statewide Global Navigation Satellite System (GNSS) reference station network, called the Wisconsin Continuously Operating Reference Stations (WISCORS) Network. The survey was done on 12/7/2023 by USGS personnel using a Topcon Hyper VR rover in combination with the FC5000 field tablet. Reference Frame NAD_83 (2011) (EPOCH:2010.000), GEOID18. GWSI Method Code: GNSS4. GWSI Altitude Accuracy: 0.04 ft.

Oct. 1 to Feb. 22, 2010: Water-stage recorder and crest-stage gage at site, 1970 ft upstream from prior location. Datum of gage is 680.0 ft above NAVD of 1988 (Southeastern Wisconsin Regional Planning Commission benchmark). From Feb. 23, 2010 to Oct. 1, 2011 it was at 683.5 NAVD88. Prior to Sept. 10, 1993, the orifice was located 10 ft downstream from Chicago, Milwaukee, St. Paul and Pacific Railroad bridge at datum 690 (from topo map). From Sept. 10, 1993 to Feb. 28, 2009 the orifice was located 30 ft upstream from the railroad bridge at 683.5 NAVD88. From March 1, 2009 to February 22, 2010 the orifice was located 100 ft downstream from the railroad bridge (below a channel drop) at 678.7 NAVD88.

REMARKS - Records are considered good, except for periods of greater than 700 ft³/s which are fair, and periods of estimated record, which are rated poor, and other periods as noted. For records status prior to October 1, 2013, see remarks printed in annual water-data reports. Gage-height telemeter at station.

WATER-QUALITY RECORDS

PERIOD OF RECORD - February 2010 to November 2015.

PERIOD OF DAILY RECORD - WATER TEMPERATURE: February 2010 to November 2015. SPECIFIC CONDUCTANCE: February 2010 to November 2015. DISSOLVED OXYGEN: February 2010 to November 2015. TURBIDITY: February 2010 to November 2015.

INSTRUMENTATION - Stage activated water-quality sampler: February 2010 to November 2015. Continuous water quality monitor with water temperature, dissolved oxygen, specific conductivity, and turbidity sensors: February 2010 to November 2015.

REMARKS - Chemical analyses are by the Milwaukee Metropolitan Sewerage District.