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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
410051073373001 GREENWICH HARBOR PRECIPITATION AT GRASS ISLAND,CT
LOCATION - Lat 41°00'50.84", long 73°37'30.29" referenced to North American Datum of 1983, Fairfield County, CT, Hydrologic Unit 01100006, above a retaining wall on the southwest side of Greenwich Harbor next to a set of public docks and just northeast of Grass Island Road next to the dock house.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - Apr. 19, 2017 to current year. Prior to Apr. 19, 2017 precipitation records for this station were published as station number 012112296.
INSTRUMENTATION - Unshielded, unheated standard 8-in. diameter, tipping bucket gage with 0.01 in. recording increment, mounted on top of gage house with the top of the collector approx. 10 ft above the ground. Elevation of gage is 18.4 ft above North American Vertical Datum of 1988.
REMARKS -
Water Year 2018: No precipitation record Nov. 9, 2017 - June 27, 2018; Sep. 10-11, 2018.
Water Year 2017: Precipitation record complete for the period Apr. 19 - Sep. 30, 2017.
Gage is operated in conjunction with a co-located streamflow gage (station 012112296). Satellite telemetry at station.
