# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-04-23 11:00:27 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 01650500 NORTHWEST BRANCH ANACOSTIA RIVER NR COLESVILLE, 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 01650500 1924-09-29 2230 7.99 USGS 01650500 1925-02-08 692 5.05 USGS 01650500 1926-09-26 1000 6.10 USGS 01650500 1926-11-16 1210 6.50 USGS 01650500 1927-10-03 1210 6.50 USGS 01650500 1929-06-21 913 5.80 USGS 01650500 1930-03-08 964 6.00 USGS 01650500 1931-07-20 1340 7.00 USGS 01650500 1932-03-28 1000 7.50 USGS 01650500 1933-08-23 4500 9.30 USGS 01650500 1934-03-03 1230 6.80 USGS 01650500 1935-05-07 1340 7.00 USGS 01650500 1936-01-03 1110 6.50 USGS 01650500 1937-08-27 2550 8.20 USGS 01650500 1937-11-13 2490 8.14 USGS 01650500 1939-01-30 680 5.60 USGS 01650500 1940-04-08 730 5.82 USGS 01650500 1940-11-27 680 5.36 USGS 01650500 1942-08-11 430 4.21 USGS 01650500 1943-05-12 1160 7.06 USGS 01650500 1943-11-08 1320 7.37 USGS 01650500 1945-07-27 2020 8.37 USGS 01650500 1946-05-28 1320 7.33 USGS 01650500 1947-09-07 500 4.53 USGS 01650500 1948-01-01 1190 7.10 USGS 01650500 1949-05-23 2030 8.80 USGS 01650500 1950-09-10 1240 7.75 USGS 01650500 1950-11-25 3960 9.70 USGS 01650500 1952-09-01 4110 9.74 USGS 01650500 1953-08-08 4910 10.99 USGS 01650500 1954-04-28 772 6.66 USGS 01650500 1955-08-13 1470 8.73 USGS 01650500 1956-07-21 1550 8.86 USGS 01650500 1957-06-05 941 7.37 USGS 01650500 1958-07-09 1290 8.34 USGS 01650500 1959-08-08 941 7.37 USGS 01650500 1960-02-19 842 7.01 USGS 01650500 1961-04-13 1060 7.75 USGS 01650500 1962-03-12 798 6.79 USGS 01650500 1963-06-05 1080 7.83 USGS 01650500 1964-01-09 814 6.77 USGS 01650500 1965-03-05 1210 8.14 USGS 01650500 1966-09-14 2100 9.57 USGS 01650500 1967-08-25 1740 9.15 USGS 01650500 1968-01-14 935 7.26 USGS 01650500 1969-08-10 1100 7.82 USGS 01650500 1970-04-14 1380 8.56 USGS 01650500 1971-08-04 2240 9.87 USGS 01650500 1972-06-22 11000 15.89 USGS 01650500 1972-12-08 900 7.12 USGS 01650500 1974-03-30 1230 8.21 USGS 01650500 1975-07-15 6640 12.24 USGS 01650500 1976-01-01 1480 8.75 USGS 01650500 1977-03-22 588 5.58 USGS 01650500 1978-01-26 1960 9.36 USGS 01650500 1979-09-05 6300 11.47 USGS 01650500 1979-10-01 1190 8.08 USGS 01650500 1981-07-04 599 5.62 USGS 01650500 1982-02-03 722 6.41 USGS 01650500 1983-04-15 1250 8.21 USGS 01650500 1998-03-21 03:00 1420 8.08 USGS 01650500 1999-09-16 15:15 2070 9.32 USGS 01650500 2000-03-21 18:15 795 6.01 USGS 01650500 2001-06-23 02:30 2410 9.65 USGS 01650500 2002-08-03 19:00 821 6.13 USGS 01650500 2003-09-23 06:30 2720 9.92 USGS 01650500 2003-12-11 06:30 2640 9.85 USGS 01650500 2005-01-14 10:00 1950 9.13 USGS 01650500 2006-06-26 9140 13.61 USGS 01650500 2006-11-16 15:45 1520 8.34 USGS 01650500 2008-05-12 01:30 1590 8.48 USGS 01650500 2009-05-26 12:15 1120 7.19 USGS 01650500 2010-08-12 09:00 1700 8.69 USGS 01650500 2011-09-08 04:30 1580 8.45 USGS 01650500 2011-12-07 22:45 1200 7.46 USGS 01650500 2013-06-10 22:15 2980 10.13 USGS 01650500 2014-04-30 7530 12.26 USGS 01650500 2015-06-27 2260 9.51 USGS 01650500 2016-05-02 22:45 2050 9.30 USGS 01650500 2017-07-29 05:15 2900 R 10.07 R USGS 01650500 2018-04-16 05:15 1660 R 8.88 R USGS 01650500 2018-12-16 00:45 2000 R 9.46 R USGS 01650500 2020-09-10 15:30 4290 10.60 USGS 01650500 2021-09-01 05:45 2300 9.50 USGS 01650500 2022-07-03 01:30 3220 10.11 USGS 01650500 2022-12-23 00:45 1130 7.07