USGS Water-Year Summary for Site 06893620

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	Available Parameters
	00010 Temperature, water(Mean,Max.,Min.)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	00301 Diss oxygen,%saturtn(Max.,Min.,Mean)
	00400 pH(Max.,Min.,Med.)
	63680 Turbidity, Form Neph(Min.,Max.,Mean)

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

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USGS Water-Year Summary 2023

06893620 ROCK CREEK AT KENTUCKY ROAD IN INDEPENDENCE, MO

LOCATION - Lat 39°06'43", long 94°28'20" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 NW 1/4 sec.32, T.50 N., R.32 W., Jackson County, MO, Hydrologic Unit 10300101, on left bank near downstream side of bridge on Kentucky Road, in Independence.

DRAINAGE AREA - 9.50 mi².

REVISIONS HISTORY - Revisions: Gage datum was revised to 723.35 ft NAVD88 on June 14, 2022, as determined by a GNSS Level II survey. Gage datum was previously published in error as 740 ft NAVD88 from digital topographic map.

SURFACE-WATER RECORDS

PERIOD OF RECORD - Jul 8, 2005 to current year.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 723.35 ft above North American Vertical Datum of 1988.

REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS MO Water Science Center.

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Dec 2011 to current year. pH: Dec 2011 to Dec 2013. WATER TEMPERATURE: Dec 2011 to current year. DISSOLVED OXYGEN: Dec 2011 to Dec 2013. TURBIDITY: Dec 2011 to current year.

REMARKS -

Interruptions or periods of missing record may be due to instrument failure, ice conditions, no flow conditions, or data corrections exceeding allowable criteria, which were deleted.

SPECIFIC CONDUCTANCE: For Water Year 2021, record is rated excellent, except for the following periods: Oct 25-28, Jan 31 - Feb 1, May 9-24, Aug 26-27, rated good.

WATER TEMPERATURE: For Water Year 2021, record is rated excellent except for the following period: Nov 1-2.

DISSOLVED OXYGEN: For Water Year 2021, record is rated excellent except for the following periods: Aug 18-24, rated good; Aug 25-27, rated fair; Jul 7, Aug 29, Nov 1-2, rated poor.

TURBIDITY: For Water Year 2021, record is rated excellent, except for the following periods: Dec 1 - Jan 29, Mar 31, May 12-14, 19, Jul 2, rated good; Oct 5, Jan 30, May 16, 20-21, Jul 3-4, rated fair.

As of October 26, 2015, turbidity data collected using YSI EXO2 sensors (previously collected using YSI 6136 6-series sensors). Note that extreme values recorded using YSI EXO2 sensors may exceed those previously recorded using YSI 6136 sensors. Manufacturer specifications of range and accuracy for both sensor models are as follows: YSI 6136: 0 to 1000 FNU, ±2% of the reading or 0.3 NTU (whichever is greater). YSI EXO2: 0 to 999 FNU: 0.3 FNU or ±2% of reading (whichever is greater); 1000 to 4000 FNU: ±5% of reading.

EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum recorded, 2,630 uS/cm, Jan 14, 2018; minimum recorded, 90 uS/cm, Aug 27, 2016, Aug 5, 2017.

pH: Maximum recorded 8.5 standard units, Aug 24, 2012; minimum recorded, 7.1 standard units, Jun 13, 2012.

WATER TEMPERATURE: Maximum recorded, 31.3 °C, Jul 19, 2012; minimum recorded, 0.0 °C, Feb 1, 21, 23, 2013, Jan 5-7, 23, 27, 2014.

DISSOLVED OXYGEN: Maximum recorded, 21.8 mg/L, Jan 25, 2013, Dec 24, 2013; minimum recorded, 1.7 mg/L, Jul 27, 2012.

TURBIDITY: Maximum recorded, 3,690 FNU, Mar 10, 2021; minimum recorded, 0.0 FNU, several days, Jan, Feb, Mar, 2016, Oct, Nov, 2018, Apr, 2019, many days, 2017, 2018, 2021. (+/- 2.0 FNU).

EXTREMES FOR PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: Maximum recorded, 1,810 uS/cm, Jan 25, 2019; minimum recorded, 218 uS/cm, Oct 2, 2014.

pH: Maximum recorded 8.2 standard units, Feb 11, Aug 21-22, 2012, Mar 6, 2013; minimum recorded, 7.3 standard units, Jul 27, 2012.

WATER TEMPERATURE: Maximum recorded, 27.6 °C, Jul 25, 2012, Jun 29, 2018; minimum recorded, 0.1 °C, Jan 6, 2014, Feb 15, 2021.

DISSOLVED OXYGEN: Maximum recorded, 16.6 mg/L, Jan 24, 2013; minimum recorded, 3.1 mg/L, Jul 27, 2012.

TURBIDITY: Maximum recorded, 550 FNU, Jun 12, 2014; minimum recorded, 0.0 FNU, Feb 6-8, 11-12, 2018, Feb 4, 2021 (+/- 2.0 FNU).