# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-11-23 09:51:21 EST # # ---------------------------------- 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 02040000 APPOMATTOX RIVER AT MATTOAX, VA # # 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 02040000 1901-05-25 13400 USGS 02040000 1902-02-28 12000 USGS 02040000 1903-03-25 10600 USGS 02040000 1904-09-16 6120 USGS 02040000 1905-02-25 5020 USGS 02040000 1926-07-07 1940 12.74 USGS 02040000 1926-12-29 3850 17.85 USGS 02040000 1928-08-15 11200 25.94 USGS 02040000 1929-04-20 4770 20.10 USGS 02040000 1929-10-22 4090 18.36 USGS 02040000 1931-05-25 3450 16.75 USGS 02040000 1932-03-10 6700 22.50 USGS 02040000 1933-04-20 5090 20.88 USGS 02040000 1934-03-08 7800 23.40 USGS 02040000 1934-12-04 8190 23.66 USGS 02040000 1936-03-20 10300 25.27 USGS 02040000 1937-04-28 20100 29.97 USGS 02040000 1938-06-24 8840 24.21 USGS 02040000 1939-03-04 3930 18.02 USGS 02040000 1940-08-18 35000 35.30 USGS 02040000 1941-04-06 3080 15.83 USGS 02040000 1942-08-12 3650 17.29 USGS 02040000 1943-02-09 5700 21.64 USGS 02040000 1944-09-23 10300 25.30 USGS 02040000 1945-09-22 10300 25.30 USGS 02040000 1945-12-30 4730 20.00 USGS 02040000 1947-03-18 4300 19.34 USGS 02040000 1948-02-18 7420 23.10 USGS 02040000 1948-12-07 9100 24.39 USGS 02040000 1949-11-04 6230 22.09 USGS 02040000 1951-03-22 2590 14.81 USGS 02040000 1951-12-24 7540 23.20 USGS 02040000 1952-11-24 5800 21.70 USGS 02040000 1954-05-21 4200 19.06 USGS 02040000 1955-08-21 12100 26.53 USGS 02040000 1955-10-14 3080 16.23 USGS 02040000 1957-03-01 3190 16.50 USGS 02040000 1958-05-10 4750 20.02 USGS 02040000 1959-01-02 6460 22.26 USGS 02040000 1960-04-09 6340 22.22 USGS 02040000 1961-02-28 4510 19.74 USGS 02040000 1962-01-10 7060 22.84 USGS 02040000 1963-03-10 4550 19.80 USGS 02040000 1964-02-19 3500 17.10 USGS 02040000 1965-03-08 3420 16.92 USGS 02040000 1966-03-05 3880 18.13 USGS 02040000 1967-02-23 2740 15.10 USGS 02040000 1968-01-17 3650 17.50 USGS 02040000 1969-07-23 4350 19.33 USGS 02040000 1970-04-04 2660 14.91 USGS 02040000 1971-06-02 8970 24.34 USGS 02040000 1972-06-25 31100 34.08 USGS 02040000 1972-10-07 22400 31.10 USGS 02040000 1974-09-10 8330 23.81 USGS 02040000 1975-09-29 10900 25.66 USGS 02040000 1976-01-04 6440 22.28 USGS 02040000 1976-10-25 4530 19.74 USGS 02040000 1978-01-28 14000 27.73 USGS 02040000 1979-02-26 21600 30.84 USGS 02040000 1979-10-02 7630 23.27 USGS 02040000 1981-08-12 2300 14.63 USGS 02040000 1982-06-08 4720 20.15 USGS 02040000 1983-04-19 8330 23.81 USGS 02040000 1984-03-29 9640 24.80 USGS 02040000 1985-08-23 4190 5 18.90 USGS 02040000 1985-11-07 12300 5 26.64 USGS 02040000 1987-04-19 11300 5 25.96 USGS 02040000 1987-12-13 3310 6 16.60 USGS 02040000 1989-05-06 5170 6 20.93 USGS 02040000 1990-05-30 4420 6 19.47 USGS 02040000 1991-04-03 5020 6 20.69 USGS 02040000 1992-03-08 3010 6 15.90 USGS 02040000 1993-03-08 11900 6 26.38 USGS 02040000 1993-12-01 12100 6 26.54 USGS 02040000 1995-07-14 5380 6 20.84 USGS 02040000 1996-09-10 13800 6 27.49 USGS 02040000 1996-12-06 5150 6 20.38 USGS 02040000 1998-03-22 10900 6 25.85 USGS 02040000 1999-09-16 4720 6 19.53 USGS 02040000 2000-04-22 4440 6 18.97 USGS 02040000 2001-04-03 4870 6 19.84 USGS 02040000 2002-03-19 2480 6 14.53 USGS 02040000 2003-09-23 13500 6 27.33 USGS 02040000 2003-12-15 4810 6 19.72 USGS 02040000 2005-01-18 4070 6 18.49 USGS 02040000 2006-09-02 4370 6 18.82 USGS 02040000 2007-01-05 7960 6 23.80 USGS 02040000 2008-05-12 3850 6 17.86 USGS 02040000 2008-12-12 4630 6 19.35 USGS 02040000 2009-11-16 8710 6 24.36 USGS 02040000 2011-09-27 3510 6 19.25 USGS 02040000 2012-03-26 2680 6 16.69 USGS 02040000 2013-01-19 5180 1,2,6 USGS 02040000 2014-05-20 5930 1,2,6 USGS 02040000 2015-03-08 2500 6 15.50 USGS 02040000 2015-12-27 10400 6 25.17 USGS 02040000 2017-01-26 21:30 3770 6 18.16 USGS 02040000 2018-05-23 05:00 6550 2,6 24.81 1 USGS 02040000 2018-10-14 21:15 12400 2,6 28.72 USGS 02040000 2020-02-11 09:45 6140 2,6 22.64 USGS 02040000 2020-11-16 10:20 9500 6 26.89 USGS 02040000 2022-03-21 10:00 3160 6 17.80 USGS 02040000 2023-02-16 15:15 3320 6 18.16