# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-11-28 20:25:10 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 02050050 BLACKWATER RIVER TRIB NEAR HOLLAND, 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 02050050 1967-08-24 140 5.62 USGS 02050050 1968-03-17 130 5.50 USGS 02050050 1969-07-30 150 5.70 USGS 02050050 1970-02-02 145 5.35 USGS 02050050 1971-01-05 197 5.40 USGS 02050050 1971-10-23 254 6.53 USGS 02050050 1973-08-03 408 7.65 USGS 02050050 1974-03-30 105 4.90 USGS 02050050 1975-03-19 138 5.40 USGS 02050050 1976-01-27 128 5.25 USGS 02050050 1976-10-20 104 4.87 USGS 02050050 1978-01-20 155 5.61 USGS 02050050 1979-09-05 403 7.62 USGS 02050050 1979-11-11 96.0 4.71 USGS 02050050 1981-06-07 103 4.86 USGS 02050050 1981-10-25 167 5.33 USGS 02050050 1983-04-16 380 7.43 USGS 02050050 1984-04-23 372 7.37 USGS 02050050 1985-09-26 289 6.78 USGS 02050050 1985-10-22 78.0 4.37 USGS 02050050 1987-01-18 181 5.90 USGS 02050050 1988-07-20 88.0 4.57 USGS 02050050 1989-07-13 331 7.08 USGS 02050050 1990-08-24 124 5.20 USGS 02050050 1991-08-09 128 5.26 USGS 02050050 1992-08-14 240 6.42 USGS 02050050 1993-03-04 99.0 4.78 USGS 02050050 1994-03-02 354 7.24 USGS 02050050 1995-02-16 52.0 3.80 USGS 02050050 1996-09-06 105 4.90 USGS 02050050 1996-10-08 144 5.48 USGS 02050050 1998-02-05 231 6.34 USGS 02050050 1999-09-16 784 10.78 USGS 02050050 1999-10-18 390 7.50 USGS 02050050 2001-03-21 186 5.95 USGS 02050050 2002-05-02 61.0 4.02 USGS 02050050 2003-09-19 497 8.39 USGS 02050050 2004-08-14 694 10.03 USGS 02050050 2004-12-10 105 4.63 USGS 02050050 2006-09-01 363 7.27