USGS Water-Year Summary for Site 06893350

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

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USGS Water-Year Summary 2023

06893350 TOMAHAWK CREEK NEAR OVERLAND PARK, KS

LOCATION - Lat 38°54'22", long 94°38'24" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 NW 1/4 sec.21, T.13 S., R.25 E., Johnson County, KS, Hydrologic Unit 10300101, on left bank at upstream side of bridge on Roe Avenue and at mile 1.64.

DRAINAGE AREA - 20.5 mi². revised. (Area at site used prior to Apr. 10, 2014, 23.90 mi², revised.)

REVISIONS HISTORY - WDR KS-74-1: 1974(M).

SURFACE-WATER RECORDS

PERIOD OF RECORD - Annual maximum, water years 1970-74. October 1974 to September 1982. July 2011 to current year.

GAGE - Water-stage recorder. Datum of gage is 850.44 ft above NAVD of 1988. Prior to Oct. 1, 1974, crest-stage gage at same site and datum. Prior to Apr. 10, 2014, gage at site 0.75 mi downstream and at datum 6.11 ft lower.

REMARKS - Satellite telemeter at station.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 8,250 cfs Aug. 13, 1982, gage height, 19.17 ft.

WATER-QUALITY RECORDS

PERIOD OF RECORD - May 2011 to August 2013 (discontinued).

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: May 2011 to August 2013 (discontinued). pH: May 2011 to August 2013 (discontinued). WATER TEMPERATURE: May 2011 to August 2013 (discontinued). DISSOLVED OXYGEN (Lumin): May 2011 to August 2013 (discontinued). TURBIDITY (YSI 6136 sensor): May 2011 to August 2013 (discontinued).

INSTRUMENTATION - Multiparameter water-quality monitor.

REMARKS - Records good. Interruptions in record are due to ice conditions or malfunction of the recording instrument or sensors. Instruments used to measure turbidity conform to ISO 7027 standards and were made using Yellow Springs Instrument (YSI) 6136 sensors.

EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 6,050 microsiemens/cm, Jan. 2, 2013; minimum, 132 microsiemens/cm, May 6, 2012. pH: Maximum, 8.7 standard units, July 29, 2013; minimum, 7.1 standard units, Aug. 1, 2012. WATER TEMPERATURE: Maximum, 34.4°C, July 18, 2011; minimum, -0.2°C, Feb. 26, 2013. DISSOLVED OXYGEN (Lumin): Maximum, 17.0 mg/L, Apr. 24, 2011; minimum, 0.8 mg/L, Oct. 26, 2012. TURBIDITY (YSI 6136 sensor): Maximum, 1,480 FNU, June 19, 2012; minimum, 0.1 FNU, Oct. 8, 2011.