# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-05-17 16:17:15 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 02056900 BLACKWATER RIVER NEAR ROCKY MOUNT, 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 02056900 1976-10-09 5000 1 USGS 02056900 1978-04-27 7710 15.81 USGS 02056900 1979-09-22 8130 16.38 USGS 02056900 1980-04-14 5280 12.15 USGS 02056900 1981-02-11 242 2.95 USGS 02056900 1982-06-13 3060 8.68 USGS 02056900 1983-04-10 6140 13.53 USGS 02056900 1984-02-14 1690 6.25 USGS 02056900 1985-08-18 4470 10.95 USGS 02056900 1985-11-05 20800 21.92 USGS 02056900 1987-09-08 9140 17.53 USGS 02056900 1987-11-29 779 4.41 USGS 02056900 1989-07-05 5550 12.61 USGS 02056900 1990-07-15 4400 10.85 USGS 02056900 1990-10-22 2560 7.83 USGS 02056900 1992-04-21 13200 19.93 USGS 02056900 1993-03-04 5350 12.31 USGS 02056900 1994-03-28 4310 10.73 USGS 02056900 1995-01-15 4520 11.06 USGS 02056900 1996-09-06 7560 15.55 USGS 02056900 1996-11-08 2490 7.76 USGS 02056900 1998-02-04 4850 11.63 USGS 02056900 1999-09-30 1420 5.74 USGS 02056900 2000-08-02 3010 8.66 USGS 02056900 2001-03-30 1210 5.29 USGS 02056900 2002-03-18 902 4.60 USGS 02056900 2003-02-22 5000 11.85 USGS 02056900 2004-09-28 6930 14.67 USGS 02056900 2005-01-14 3170 8.94 USGS 02056900 2006-06-26 5330 12.35 USGS 02056900 2006-11-16 2460 7.71 USGS 02056900 2008-08-28 1090 5.02 USGS 02056900 2009-06-05 4270 10.73 USGS 02056900 2009-11-12 7060 14.85 USGS 02056900 2010-12-01 2800 8.31 USGS 02056900 2012-05-14 4300 10.77 USGS 02056900 2013-01-31 4150 10.54 USGS 02056900 2014-08-24 2360 7.53 USGS 02056900 2015-09-29 4110 10.47 USGS 02056900 2015-11-10 2650 8.04 USGS 02056900 2016-10-08 02:00 3340 9.22 USGS 02056900 2018-09-17 09:15 5490 12.59 USGS 02056900 2018-10-11 20:45 6680 14.31 USGS 02056900 2020-05-21 17:45 4950 11.77 USGS 02056900 2020-11-12 07:00 6290 13.76 USGS 02056900 2022-03-23 22:30 1730 6.36 USGS 02056900 2022-11-11 17:00 2250 7.33