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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
01483155 SILVER LAKE TRIBUTARY AT MIDDLETOWN, DE
LOCATION - Lat 39°25'51.5", long 75°42'34.1" referenced to North American Datum of 1983, New Castle County, DE, Hydrologic Unit 02040205, on right bank just downstream from bridge on State Road 71, at Middletown, 0.5 mi upstream of Silver Lake.
DRAINAGE AREA - 1.73 mi². revised, from automated delineation using 30-meter National Elevation Dataset, digital elevation model data, dated 2011.
REVISIONS HISTORY - WDR-US-2010: 2001-2009.
https://waterdata.usgs.gov/md/nwis/inventory/?site_no=01483155: 2014, Drainage area.
https://waterdata.usgs.gov/md/nwis/inventory/?site_no=01483155: 2014, Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 2001 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 12.86 ft above North American Vertical Datum of 1988.
REMARKS - Water Years 2018-2023: Records fair, except those above 150 ft³/s and those for estimated discharges, which are poor.
Water Year 2017: Records fair, except those above 150 ft³/s, which are poor.
Water Year 2016: Records fair, except those for estimated daily discharges, and those above 100 ft³/s, which are poor.
Water Years 2014-2015: Records fair, except those above 150 ft³/s, which are poor.
Water Year 2013 and prior years' accuracy statements can be found in Annual Water Data Reports.
Occasional regulation at low and medium flows for irrigation upstream from station during some years. U.S. Geological Survey satellite data-collection platform at station.
Occasional regulation at low and medium flows for irrigation upstream from station during some years. U.S. Geological Survey satellite data-collection platform at station.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: May 2021 to current year. WATER TEMPERATURE: May 2021 to current year.
COOPERATION - Funding for water-quality collection is provided the United States Geological Survey.
INSTRUMENTATION - Multi-parameter water-quality monitor, May 2021 to current year.
REMARKS - Missing data due to equipment malfunction.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Maximum, 24.8°C, first occurrence on July 4, 2023; minimum, 1.7°C, first occurrence on December 24, 2022. SPECIFIC CONDUCTANCE: Maximum, 1,470 µS/cm on multiple days, first occurrence on January 16, 2022; minimum, 21 µS/cm, June 23, 2023.
