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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
01648011 Luzon Branch above Rock Creek at Washington DC
LOCATION - Lat 38°57'42.1", long 77°02'29.0" referenced to North American Datum of 1983, Washington, DC, Hydrologic Unit 02070010,
DRAINAGE AREA - 1.03 mi².
REVISIONS HISTORY -
- Gage height and discharge for the period October 15, 2023 until February 7, 2024 were revised on March 26, 2025 due to degradation of gage height data quality and resulting degradation of the computed discharges.
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 2022 to August 2022 (gage height only). August 2022 to current year (gage height and discharge).
GAGE - Water stage recorder. Datum of gage is 141.22 ft above North American Vertical Datum of 1988.
REMARKS - Water Year 2024: Records poor, including those for estimated discharges.
Water Year 2023: Records poor. No estimated discharges.
Water Year 2022: Records fair. No estimated discharges.
WATER-QUALITY RECORDS
PERIOD OF RECORD -
July 2022 to current year.
EXTREMES FOR PERIOD OF RECORD -
Minimum recorded value: 0.56 degrees Celsius, multiple occurrences recorded; first occurrence recorded on 2025-01-23 at 07:35:00 EST.
Maximum recorded value: 27.9 degC, recorded on 2024-07-31 at 15:40:00 UTC-5.
