USGS Water-Year Summary 2024
04057801 M BR ESCANABA R AT US HWY 41 NR HUMBOLDT, MI
LOCATION - Lat 46°29'36", long 87°52'04" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 sec.01, T.47 N., R.29 W., Marquette County, MI, Hydrologic Unit 04030110, on right bank 10 ft downstream of ORV bridge, 1.0 mi east of Humboldt, MI.
DRAINAGE AREA - 47.6 mi².
WATER-QUALITY RECORDS
PERIOD OF RECORD - October 2017 to current year.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: October 2017 to current year. pH: October 2017 to current year. WATER TEMPERATURE: October 2017 to current year. DISSOLVED OXYGEN: January 2021 to current year.
INSTRUMENTATION - Water-quality monitor, set for 15-minute measurement interval.
EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum recorded, 483 microsiemens, Aug. 27, 2021; minimum recorded, 32 microsiemens, April 10, 2020. pH: Maximum recorded, 7.5 units, on several days in the 2021 water year; minimum recorded, 5.5 units, April 22, May 13 and 14, 2019. WATER TEMPERATURE: Maximum recorded, 25.7°C, July 5, 2021; minimum recorded, -0.2°C, on several days in the 2021 and 2022 water year and on many days in the 2023 water year. DISSOLVED OXYGEN: Maximum recorded, 11.8 mg/L, April 8, 2023; minimum recorded, 4.2 mg/L, May 15, 2022.