USGS Water-Year Summary 2024
01483700 ST. JONES RIVER AT DOVER, DE
LOCATION - Lat 39°09'49.4", long 75°31'08.7" referenced to North American Datum of 1983, Kent County, DE, Hydrologic Unit 02040207, on left bank 150 ft upstream from Division Street Bridge in Dover, 1,950 ft downstream from Silver Lake, and 12.5 mi upstream from mouth.
DRAINAGE AREA - 31.9 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - January 1958 to current year.
GAGE - Water-stage recorder, concrete control, and crest-stage gage. Datum of gage is -0.77 ft above North American Vertical Datum of 1988. Prior to June 1973, at gage datum 0.50 ft higher.
WATER-QUALITY RECORDS
PERIOD OF RECORD - WATER TEMPERATURE: April 2021 to current year. SPECIFIC CONDUCTANCE: April 2021 to current year.
COOPERATION - Funding for water-quality collection is provided by the United States Geological Survey.
INSTRUMENTATION - Multi-parameter water-quality monitor, April 2021 to current year.
EXTREMES FOR PERIOD OF RECORD -
WATER TEMPERATURE: Minimum Inst. Temp 0.4°C on January 22, 2022; Maximum Inst. Temp 33.3°C on August 9, 2022
SPECIFIC CONDUCTANCE: Maximum, 2050 µS/cm on September 30, 2022; Minimum, 71 µS/cm, April 30, 2023.