USGS Water-Year Summary for Site 06914950

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	00065 Gage height(Mean)

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Water year 2024: 2023-10-01 to 2024-09-30

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USGS Water-Year Summary 2024

06914950 BIG BULL CREEK NEAR EDGERTON, KS

LOCATION - Lat 38°45'12", long 94°58'37" referenced to North American Datum of 1927, in NW 1/4 NE 1/4 sec.16, T.15 S., R.22 E., Johnson County, KS, Hydrologic Unit 10290102, located on right bank at upstream side of southbound Interstate Highway 35 bridge, 1.5 mi east of Edgerton.

DRAINAGE AREA - 28.7 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - July 1993 to current year.

GAGE - Water-stage recorder. Current datum of gage is 925.049 ft above sea level NAVD 88. Previous datum of gage was 925.04 ft above NGVD of 1929.

REMARKS - Satellite telemeter at station.

WATER-QUALITY RECORDS

PERIOD OF RECORD - YSI; October 2010 to September 2012 (discontinued). EXO: Jan. 10, 2023 to Jan. 3, 2024 (discontinued).

PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE (YSI): October 2010 to September 2012 (discontinued). pH (YSI): December 2010 to April 2011 (discontinued). WATER TEMPERATURE (YSI): October 2010 to September 2012 (discontinued). DISSOLVED OXYGEN (YSI-Lumin): December 2010 to April 2011 (discontinued). TURBIDITY (YSI 6136 sensor): October 2010 to September 2012 (discontinued.

SPECIFIC CONDUCTANCE (EXO): Jan. 10, 2023 to Jan. 3, 2024 (discontinued). pH (EXO): Jan. 10, 2023 to Jan. 3, 2024 (discontinued). WATER TEMPERATURE (EXO): Jan. 10, 2023 to Jan. 3, 2024 (discontinued). DISSOLVED OXYGEN (EXO): Jan. 10, 2023 to Jan. 3, 2024 (discontinued). TURBIDITY (EXO): Jan. 10, 2023 to Jan. 3, 2024 (discontinued).

INSTRUMENTATION - Multiparameter water-quality monitor.

REMARKS - Records good. Interruptions in record are due to ice conditions, malfunction of the recording instrument or sensors, or during days of no streamflow. Instruments used to measure turbidity conform to ISO 7027 standards and were made using Yellow Springs Instrument (YSI) 6136 sensor.

EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE (YSI): Maximum, 1,210 microsiemens/cm, Sept. 11, 2012; minimum, 191 microsiemens/cm, Feb. 28, 2011.

pH (YSI): Maximum, 8.6 standard units, Mar. 31, 2011; minimum, 7.7 standard units, Jan. 24, 2011.

WATER TEMPERATURE (YSI): Maximum, 32.6°C, July 29, 2012; minimum, 0.0°C, Feb. 14, 2011.

DISSOLVED OXYGEN (YSI-Lumin): Maximum, 20.2 mg/L, Dec. 22, 2010; minimum, 6.6 mg/L, Apr. 10, 2011.

TURBIDITY (YSI 6136 sensor): Maximum, 1,280 FNU, June 19, 2011; minimum, 0.9 FNU, Feb. 11, 2011.

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SPECIFIC CONDUCTANCE (EXO): Maximum, 1,860 microsiemens/cm, Jan. 26, 2023; minimum, 164 microsiemens/cm, Sep. 21, 2023.

pH (EXO): Maximum, 8.8 standard units, Jan. 30, 2023; minimum, 7.4 standard units, July 14, 2023.

WATER TEMPERATURE (EXO): Maximum, 32.8°C, Aug. 25, 2023; minimum, 0.2°C, Jan. 30, 2023.

DISSOLVED OXYGEN (EXO): Maximum, 19.7 mg/L, Feb. 2, 2023; minimum, 1.0 mg/L, Oct. 5, 2023.

TURBIDITY (EXO): Maximum, 784 FNU, May 31, 2023; minimum, 3.0 FNU, Nov. 16, 2023.