USGS Water-Year Summary for Site 06610505

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	Available Parameters
	00010 Temperature, water(Mean)
	00095 Specific cond at 25C(Mean)
	00300 Dissolved oxygen(Mean)
	00400 pH(Med.)
	63680 Turbidity, Form Neph(Mean)
	72213 Turbidity, 90&0-45 d(Mean)

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

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USGS Water-Year Summary 2024

06610505 Missouri River near Council Bluffs, IA

LOCATION - Lat 41°11'21", long 95°51'45" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 SE 1/4 sec.23, T.74 N., R.44 W., Pottawattamie County, IA, Hydrologic Unit 10230006, on left bank near Lake Manawa State Park access road, at south edge of Council Bluffs, 0.6 mi downstream from Indian Creek, 1.5 mi upstream from Mosquito Creek, and 607.5 mi upstream from mouth.

DRAINAGE AREA - 322,840 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD -

Stage-only records from October 2006 to September 2009.

WQ: July 2006 to September 2007, July 2012 to December 2023.

From July 2012 to December 2023 a multi probe monitor was deployed for a study being performed by the USGS Nebraska Water Science Center in accordance with the City of Omaha. The impacts of combined sewer overflows (CSOs) dumping into the Missouri River was being studied. The continuous monitoring station at NP Dodge is deployed as the upstream location for the city. The project ended in December 2023 after a decade of data collection after funding of the site was concluded.

GAGE - Water-stage recorder. Datum of gage is 944.09 ft above National Geodetic Vertical Datum of 1929.

REMARKS - Records good.

EXTREMES FOR PERIOD OF RECORD - Maximum instantaneous gage height, 26.56 ft, June 12, 2008; minimum instantaneous gage height, 6.36 ft, December 18, 2008.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 2012 to November 2023 when site was discontinued.

PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: March 2006 to November 2009, July 2012 to December 2022, records fragmentary.
WATER TEMPERATURE: March 2006 to November 2009, July 2012 to Aug. 2023, records fragmentary.
DISSOLVED OXYGEN: March 2006 to November 2009, July 2012 to December 2022, records fragmentary.
pH: March 2006 to November 2008, July 2012 to December 2022, records fragmentary.
TURBIDITY: March 2006 to November 2009, July 2012 to November 2023, records fragmentary.

INSTRUMENTATION - Deployment of a continuous water-quality monitor. Measured parameters include water temperature, specific conductance, pH, dissolved oxygen, and turbidity. Turbidity measurements conform to ISO 7027 standards and were made using a Yellow Springs International (YSI) 6136 sensor. Dissolved oxygen data were collected using a luminescent sensor.