# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-12-18 01:02:00 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 02047500 BLACKWATER RIVER NEAR DENDRON, 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 02047500 1940-08-00 10000 7,Bd 13.10 3,Bd USGS 02047500 1942-03-11 560 4.34 3 USGS 02047500 1943-02-08 1580 5.70 3 USGS 02047500 1944-03-09 1790 5.84 3 USGS 02047500 1945-07-21 4710 8.90 3 USGS 02047500 1945-12-31 2580 6.74 3 USGS 02047500 1947-01-23 845 4.62 3 USGS 02047500 1948-02-18 2130 6.20 3 USGS 02047500 1949-08-16 2220 6.45 3 USGS 02047500 1950-09-12 2040 6.12 3 USGS 02047500 1951-03-22 842 4.56 3 USGS 02047500 1952-01-30 2490 6.56 3 USGS 02047500 1953-03-18 1220 5.08 3 USGS 02047500 1954-05-23 1660 5.66 3 USGS 02047500 1955-08-19 2310 6.41 3 USGS 02047500 1956-02-13 1150 4.99 3 USGS 02047500 1957-02-05 2130 6.20 3 USGS 02047500 1958-08-05 3300 7.49 3 USGS 02047500 1959-01-02 2190 6.24 3 USGS 02047500 1960-09-14 3800 8.39 3 USGS 02047500 1961-02-10 2310 6.10 3 USGS 02047500 1961-10-22 3700 7.93 3 USGS 02047500 1963-06-05 5070 9.10 3 USGS 02047500 1964-02-22 1020 4.76 3 USGS 02047500 1965-03-29 1020 4.75 3 USGS 02047500 1966-05-07 682 4.22 3 USGS 02047500 1967-02-24 1540 5.23 3 USGS 02047500 1968-03-20 2090 5.78 3 USGS 02047500 1969-08-07 3370 6.93 3 USGS 02047500 1970-04-05 2000 5.64 3 USGS 02047500 1971-04-09 1460 5.10 3 USGS 02047500 1971-10-26 2250 6.25 3 USGS 02047500 1972-10-08 4230 7.62 3 USGS 02047500 1974-03-21 839 4.58 3 USGS 02047500 1975-03-21 4900 8.40 3 USGS 02047500 1976-01-31 2540 6.26 3 USGS 02047500 1977-03-10 1360 5.03 3 USGS 02047500 1978-01-21 3470 7.07 3 USGS 02047500 1979-02-28 4790 8.26 3 USGS 02047500 1979-11-15 2810 6.89 3 USGS 02047500 1981-06-09 1370 5.42 3 USGS 02047500 1982-08-13 2650 6.71 3 USGS 02047500 1983-04-19 2880 6.90 3 USGS 02047500 1984-03-08 2990 6.99 3 USGS 02047500 1985-09-28 5850 9.11 3 USGS 02047500 1985-12-02 1730 5.82 3 USGS 02047500 1987-04-20 3820 7.63 3 USGS 02047500 1988-02-14 1380 5.43 3 USGS 02047500 1989-05-04 2440 6.51 3 USGS 02047500 1990-08-08 5360 8.76 3 USGS 02047500 1991-01-14 1880 5.89 3 USGS 02047500 1992-03-12 1400 5.31 3 USGS 02047500 1993-03-08 2560 6.63 3 USGS 02047500 1994-03-04 4440 8.12 3 USGS 02047500 1995-03-10 1950 5.98 3 USGS 02047500 1996-09-12 1810 5.81 3 USGS 02047500 1996-10-10 2580 6.61 3 USGS 02047500 1998-02-06 4030 7.81 3 USGS 02047500 1999-09-17 12300 17.11 3 USGS 02047500 2000-09-05 5150 10.12 3 USGS 02047500 2001-05-28 812 4.65 3 USGS 02047500 2002-04-03 578 4.03 3 USGS 02047500 2003-09-20 5460 10.57 3 USGS 02047500 2004-09-20 2490 7.02 3 USGS 02047500 2004-12-12 1660 6.27 3 USGS 02047500 2006-09-02 4380 9.27 3 USGS 02047500 2006-10-08 10700 15.73 3 USGS 02047500 2008-04-23 3040 7.71 3 USGS 02047500 2008-12-13 1630 5.89 3 USGS 02047500 2010-02-07 2740 7.34 2,3 2009-11-14 7.59 3 USGS 02047500 2011-09-09 4460 10.36 3 USGS 02047500 2012-08-27 1780 6.97 3 USGS 02047500 2013-06-09 4660 39.88 USGS 02047500 2014-04-18 1260 35.14 USGS 02047500 2015-07-01 2130 36.79 USGS 02047500 2016-02-06 1600 35.91 USGS 02047500 2016-10-10 11:45 1850 36.37 USGS 02047500 2018-05-22 21:45 1020 34.96 USGS 02047500 2019-02-25 14:00 2360 36.01 USGS 02047500 2020-08-16 17:45 4740 38.67 USGS 02047500 2021-02-20 04:30 2860 36.62 USGS 02047500 2022-03-14 17:15 963 34.37 USGS 02047500 2023-05-02 22:30 994 34.42