USGS Water-Year Summary for Site 07182250

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	Available Parameters
	00010 Temperature, water(Mean)
	00060 Discharge(Mean)
	00065 Gage height(Mean)
	00095 Specific cond at 25C(Mean)
	63680 Turbidity, Form Neph(Mean)

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

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USGS Water-Year Summary 2024

07182250 COTTONWOOD RIVER NEAR PLYMOUTH, KS

LOCATION - Lat 38°23'51", long 96°21'21" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 SE 1/4 sec.13, T.19 S., R.9 E., Chase County, KS, Hydrologic Unit 11070203, on right bank at upstream side of county highway bridge, 0.8 mi downstream from Buckeye Creek, 1.5 mi southwest of Plymouth, and at mile 39.2.

DRAINAGE AREA - 1,740 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - March 1963 to current year.

GAGE - Water-stage recorder. Datum of gage is 1,109.04 ft above NGVD of 1929.

REMARKS - Flow partially regulated since 1968 by Marion Lake (station 07179794), 87.3 mi upstream. Satellite telemeter at station.

EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since at least 1903, 37.8 ft, July 11, 1951, from information by local residents, discharge not determined.

WATER-QUALITY RECORDS

PERIOD OF RECORD - February 2007 to May 2009, April 2015 to current year.

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: February 2007 to May 2009 (discontinued). SPECIFIC CONDUCTANCE (EXO2): April 2015 to current year. WATER TEMPERATURE: February 2007 to May 2009 (discontinued). WATER TEMPERATURE (EXO2): April 2015 to current year. TURBIDITY (YSI 6136 sensor): February 2007 to May 2009 (discontinued). TURBIDITY (EXO2): April 2015 to current year.

INSTRUMENTATION - Multiparameter water-quality monitor.

REMARKS - 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 sensor.

EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 1,180 microsiemens/cm, Dec. 20, 2009; minimum, 142 microsiemens/cm, May 24, 2007. SPECIFIC CONDUCTANCE (EXO2): Maximum, 1,000 microsiemens/cm, Aug. 10, 2015; minimum, 137 microsiemens/cm, July 10, 2015. WATER TEMPERATURE: Maximum, 32.0°C, Aug. 13, 2007; minimum, -0.1°C, Jan. 23, 2008. WATER TEMPERATURE (EXO2): Maximum, 31.0°C, July 26, 2015; minimum, 13.4°C, May 21, 2015. TURBIDITY (YSI 6136 sensor): Maximum, 1,230 FNU, Sept. 12, 2008; minimum, 0.3 FNU, Feb. 4, 2008. TURBIDITY (EXO2): Maximum, 1,290 FNU, July 10, 2015; minimum, 12 FNU, May 5, 2015.