USGS Water-Year Summary 2023
05517000 YELLOW RIVER AT KNOX, IN
LOCATION - Lat 41°18'10", long 86°37'14" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.14, T.33 N., R.2 W., Starke County, IN, Hydrologic Unit 07120001, on right bank 40 ft upstream from bridge on U.S. Highway 35 in Knox, 0.3 mi north of Knox, 1.4 mi downstream from Eagle Creek, and at mile 11.6.
DRAINAGE AREA - 435 mi². of which 51 mi² does not contribute directly to surface runoff.
REVISIONS HISTORY - WSP 1278: 1952. WSP 2115: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 1905 to July 1906, August 1943 to current year.
GAGE - Water-stage recorder. Datum of gage is 679.93 ft above National Geodetic Vertical Datum of 1929 (levels by State of Indiana, Department of Natural Resources). August 1905 to July 1906, nonrecording gage at same site at different datum. August 1943 to July 17, 1952, nonrecording gage at same site and datum.
WATER-QUALITY RECORDS
PERIOD OF RECORD -
TEMPERATURE: May 2012 to current
TURBIDITY YSI 6 SERIES: May 20212 to August 2020
TURBIDITY YSI EXO: April 2019 to current
EXTREMES FOR PERIOD OF RECORD -
WATER TEMPERATURE: Maximum: 32.0 degrees Celsius, July 06, 2012*. Minimum: -0.2 degrees Celsius, November 20, 2014*.
TURBIDITY YSI 6 SERIES: Maximum: 920 FNUs, October 12, 2012. Minimum: 0.5 FNUs, October 01, 2012.
TURBIDITY YSI EXO: Maximum: 451 FNUs, September 29, 2019. Minimum: 0.6 FNUs, October 20, 2019.
*Multiple occurrences of the same extreme in selected dataset.