USGS Water-Year Summary 2024
04118564 GRAND RIVER AT N PARK ST NE AT GRAND RAPIDS, MI
LOCATION - Lat 43°01'22", long 85°39'39" referenced to North American Datum of 1983, in SE 1/4 NW 1/4 sec.06, T.7 N., R.11 W., Kent County, MI, Hydrologic Unit 04050006, at left bank 20 ft upstream from N. Park St. NE bridge at Grand Rapids.
DRAINAGE AREA - 4,877.36 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - June 24, 2020 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 601.93 ft above NAVD88.
EXTREMES FOR PERIOD OF RECORD - Maximum gage-height, 12.02 ft, Apr. 8, 2023; minimum gage-height, 3.20 ft, June 22, 23, 2023.
WATER-QUALITY RECORDS
PERIOD OF RECORD - EXO: Water Years 2020 to current year.
Manta: May 2022 to current year (operated seasonally).
PERIOD OF DAILY RECORD - EXO: SPECIFIC CONDUCTANCE: July 2020 to current year. WATER TEMPERATURE: July 2020 to current year. DISSOLVED OXYGEN: July 2020 to current year. TURBIDITY: July 2020 to current year.
Manta: SPECIFIC CONDUCTANCE: May 2022 to current year. WATER TEMPERATURE: May 2022 to current year. DISSOLVED OXYGEN: May 2022 to current year. TURBIDITY: May 2022 to current year. fDOM: May 2022 to current year. Tryptophan: May 2022 to current year.
INSTRUMENTATION - EXO: Water-quality monitor telemeter, set for 15-minute measurement interval.
Manta: Water-quality monitor telemeter, set for 15-minute measurement interval. Turbidity value averaged over the 15-minute measurement interval.
EXTREMES FOR PERIOD OF DAILY RECORD - EXO: SPECIFIC CONDUCTANCE: Maximum recorded, 865 microsiemens, Feb. 7, 2023; minimum recorded, 376 microsiemens, Apr. 8, 2023. WATER TEMPERATURE: Maximum recorded, 28.8 °C, June 11, 2021; minimum recorded, -0.2 °C on several days during 2022 winter period. DISSOLVED OXYGEN: Maximum recorded, 16.7 mg/L, Nov. 23, 2022; minimum recorded, 3.0 mg/L, June 8, 2021. TURBIDITY: Maximum recorded, 779 FNU, Feb. 23, 2022; minimum recorded, 0.0 FNU on several days Oct. 2022.
Manta: SPECIFIC CONDUCTANCE: Maximum recorded, 719 microsiemens, on several occurences; minimum recorded, 476 microsiemens, on several occurences. WATER TEMPERATURE: Maximum recorded, 28 °C, July 23, 2022; minimum recorded, 7.4 °C on Oct. 21, 2022. DISSOLVED OXYGEN: Maximum recorded, 18.2 mg/L, on August 02, 2022; minimum recorded, 4.9 mg/L,on several occurences. TURBIDITY: Maximum recorded, 39.7 FNU, April 13, 2023; minimum recorded, -0.9 FNU on several days. fDOM: TRYPTOPHAN: