USGS Water-Year Summary 2024
04135700 SOUTH BRANCH AU SABLE RIVER NEAR LUZERNE, MI
LOCATION - Lat 44°36'53", long 84°27'20" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 sec.29, T.26 N., R.1 W., Crawford County, MI, Hydrologic Unit 04070007, on right bank 10 ft upstream from Smith Bridge, 400 ft downstream from bridge on State Highway 72, 4.6 mi upstream from mouth, and 9.1 mi west of Luzerne.
DRAINAGE AREA - 401 mi².
REVISIONS HISTORY - WSP 2111: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Occasional low-flow measurements, water years 1951-66. October 1966 to September 1989, October 1990 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1,059.26 ft above NAVD88. Apr. 19, 1951 to Nov. 14, 1966, nonrecording gage at same site at different datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1,120 ft³/s, Mar. 28, 1976, gage height, 7.30 ft; maximum gage height, 7.75 ft, Jan. 28, 1986, backwater from ice; minimum discharge, 78 ft³/s, Feb. 12, 1981, result of freezeup.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 2021 to current year.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: November 2020 to current year.
INSTRUMENTATION - Water-temperature sensor.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 25.0°C, July 19, 2024; minimum, 0.0°C, on many days during winter periods.