# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-11-01 01:35:20 EDT # # ---------------------------------- WARNING ---------------------------------------- # Some of the data that you have obtained from this U.S. Geological Survey database # may not have received Director's approval. Any such data values are qualified # as provisional and are subject to revision. Provisional data are released on the # condition that neither the USGS nor the United States Government may be held liable # for any damages resulting from its use. # # More data may be available offline. # For more information on these data, contact USGS Water Data Inquiries. # This file contains the annual peak streamflow data. # # This information includes the following fields: # # agency_cd Agency Code # site_no USGS station number # peak_dt Date of peak streamflow (format YYYY-MM-DD) # peak_tm Time of peak streamflow (24 hour format, 00:00 - 23:59) # peak_va Annual peak streamflow value in cfs # peak_cd Peak Discharge-Qualification codes (see explanation below) # gage_ht Gage height for the associated peak streamflow in feet # gage_ht_cd Gage height qualification codes # year_last_pk Peak streamflow reported is the highest since this year # ag_dt Date of maximum gage-height for water year (if not concurrent with peak) # ag_tm Time of maximum gage-height for water year (if not concurrent with peak # ag_gage_ht maximum Gage height for water year in feet (if not concurrent with peak # ag_gage_ht_cd maximum Gage height code # # Sites in this file include: # USGS 01649500 NORTHEAST BRANCH ANACOSTIA RIVER AT RIVERDALE, MD # # Peak Streamflow-Qualification Codes(peak_cd): # 1 ... Discharge is a Maximum Daily Average # 2 ... Discharge is an Estimate # 3 ... Discharge affected by Dam Failure # 4 ... Discharge less than indicated value, # which is Minimum Recordable Discharge at this site # 5 ... Discharge affected to unknown degree by # Regulation or Diversion # 6 ... Discharge affected by Regulation or Diversion # 7 ... Discharge is an Historic Peak # 8 ... Discharge actually greater than indicated value # 9 ... Discharge due to Snowmelt, Hurricane, # Ice-Jam or Debris Dam breakup # A ... Year of occurrence is unknown or not exact # Bd ... Day of occurrence is unknown or not exact # Bm ... Month of occurrence is unknown or not exact # C ... All or part of the record affected by Urbanization, # Mining, Agricultural changes, Channelization, or other # F ... Peak supplied by another agency # O ... Opportunistic value not from systematic data collection # R ... Revised # # Gage height qualification codes(gage_ht_cd,ag_gage_ht_cd): # 1 ... Gage height affected by backwater # 2 ... Gage height not the maximum for the year # 3 ... Gage height at different site and(or) datum # 4 ... Gage height below minimum recordable elevation # 5 ... Gage height is an estimate # 6 ... Gage datum changed during this year # 7 ... Debris, mud, or hyper-concentrated flow # 8 ... Gage height tidally affected # Bd ... Day of occurrence is unknown or not exact # Bm ... Month of occurrence is unknown or not exact # F ... Peak supplied by another agency # R ... Revised # # agency_cd site_no peak_dt peak_tm peak_va peak_cd gage_ht gage_ht_cd year_last_pk ag_dt ag_tm ag_gage_ht ag_gage_ht_cd 5s 15s 10d 6s 8s 33s 8s 27s 4s 10d 6s 8s 27s USGS 01649500 1933-08-23 10500 7 15.50 3 USGS 01649500 1939-01-30 1580 8.53 3 USGS 01649500 1940-04-20 2350 10.00 3 USGS 01649500 1941-07-13 1350 7.07 3 USGS 01649500 1942-08-09 2980 11.47 3 USGS 01649500 1942-10-16 3660 12.93 3 USGS 01649500 1943-11-09 2280 9.84 3 USGS 01649500 1945-07-18 3680 12.72 3 USGS 01649500 1945-12-06 1660 8.65 3 USGS 01649500 1947-06-14 1820 9.02 3 USGS 01649500 1948-08-12 1780 8.93 3 USGS 01649500 1948-11-29 1280 7.52 3 USGS 01649500 1950-09-11 2060 9.63 3 USGS 01649500 1951-06-13 1980 9.39 3 USGS 01649500 1952-09-01 2770 10.64 3 USGS 01649500 1952-11-22 3000 11.11 3 USGS 01649500 1953-12-14 889 6.10 3 USGS 01649500 1955-01-14 3120 7.25 3 USGS 01649500 1955-10-14 2870 6.38 3 USGS 01649500 1957-04-05 1020 4.30 3 USGS 01649500 1958-07-23 3400 6.10 3 USGS 01649500 1959-08-08 2470 5.49 3 USGS 01649500 1960-09-12 2830 5.75 3 USGS 01649500 1961-04-13 2340 5.44 3 USGS 01649500 1962-03-12 1940 5.15 3 USGS 01649500 1963-08-20 5060 6.98 3 USGS 01649500 1964-01-09 1670 4.94 3 USGS 01649500 1965-03-05 2310 5.42 3 USGS 01649500 1966-09-14 3300 7.60 3 USGS 01649500 1967-08-25 4570 6.44 3 USGS 01649500 1968-09-10 2510 4.61 3 USGS 01649500 1969-08-10 5660 7.28 3 USGS 01649500 1970-07-09 3240 5.76 USGS 01649500 1971-09-11 4340 6.60 USGS 01649500 1972-06-22 12000 10.84 USGS 01649500 1973-06-24 3760 6.16 USGS 01649500 1974-03-30 3990 6.34 USGS 01649500 1975-09-26 10800 10.57 USGS 01649500 1976-01-01 5490 8.14 USGS 01649500 1976-10-25 4050 6.99 USGS 01649500 1978-01-26 6410 8.71 USGS 01649500 1979-09-05 9410 10.16 USGS 01649500 1979-10-01 4170 7.09 USGS 01649500 1981-08-31 4410 7.30 USGS 01649500 1982-06-01 2010 5.03 USGS 01649500 1983-06-19 6010 8.45 USGS 01649500 1984-03-29 4310 7.21 USGS 01649500 1985-09-27 5360 8.04 USGS 01649500 1986-08-08 3150 6.19 USGS 01649500 1986-12-24 5320 8.01 USGS 01649500 1988-05-23 3110 6.15 USGS 01649500 1989-05-06 8100 9.56 USGS 01649500 1990-08-06 3610 6.61 USGS 01649500 1991-03-23 4380 7.27 USGS 01649500 1992-07-25 5350 8.03 USGS 01649500 1992-11-23 3060 6.11 USGS 01649500 1993-11-28 7880 9.45 USGS 01649500 1995-01-20 3940 6.90 USGS 01649500 1996-01-19 7540 9.28 USGS 01649500 1996-11-08 7090 9.05 USGS 01649500 1998-03-09 06:45 6870 8.93 USGS 01649500 1999-09-16 14:30 7440 9.23 USGS 01649500 2000-08-27 19:15 2760 5.82 USGS 01649500 2001-06-07 08:30 4260 7.17 USGS 01649500 2002-09-01 09:15 3470 6.49 USGS 01649500 2003-09-23 5600 8 USGS 01649500 2004-07-04 15:15 8000 11.19 USGS 01649500 2005-01-14 09:30 5130 7.89 USGS 01649500 2006-06-26 02:30 12000 10.83 USGS 01649500 2007-04-15 13:30 4310 7.21 USGS 01649500 2008-05-12 03:45 6750 8.87 USGS 01649500 2009-06-10 20:00 8080 9.55 USGS 01649500 2010-08-18 08:15 5720 8.27 USGS 01649500 2011-09-07 14:00 6090 8.50 USGS 01649500 2011-12-07 22:15 4670 7.52 USGS 01649500 2012-10-30 00:30 4750 7.49 USGS 01649500 2014-06-10 10:35 7290 9.15 USGS 01649500 2015-06-27 17:25 4690 7.44 USGS 01649500 2016-02-24 20:35 5010 7.69 USGS 01649500 2017-07-29 01:50 4370 7.18 USGS 01649500 2018-06-03 18:30 8340 9.71 USGS 01649500 2018-12-15 23:00 5010 7.64 USGS 01649500 2020-09-10 15:15 8640 R 9.85 R USGS 01649500 2021-08-09 19:55 5770 R 8.24 R USGS 01649500 2022-07-03 01:50 9540 10.21 USGS 01649500 2023-08-08 00:40 2560 5.13