# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-04-18 03:44:12 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 01670400 NORTH ANNA RIVER NEAR PARTLOW, 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 01670400 1972-06-22 22000 2,6,7 36.32 USGS 01670400 1979-02-26 11700 6 25.30 USGS 01670400 1979-10-02 6050 6 16.51 USGS 01670400 1981-02-11 87.0 6 4.61 USGS 01670400 1982-02-04 4080 6 USGS 01670400 1983-04-25 5200 6 15.19 USGS 01670400 1984-03-30 9030 6 22.05 USGS 01670400 1985-02-02 2240 6 9.17 USGS 01670400 1985-11-05 8690 6 21.48 USGS 01670400 1987-04-17 6660 6 18.02 USGS 01670400 1987-11-30 4810 6 14.35 USGS 01670400 1989-05-06 6680 6 18.06 USGS 01670400 1990-05-29 5230 6 15.17 USGS 01670400 1991-01-12 4620 6 13.95 USGS 01670400 1992-02-26 1970 6 8.65 USGS 01670400 1993-03-05 8230 6 20.72 USGS 01670400 1993-11-28 8690 6 21.48 USGS 01670400 1995-06-27 11700 6 26.24 USGS 01670400 2008-05-10 5050 6 15.02 USGS 01670400 2009-06-05 2550 6 10.55 USGS 01670400 2009-12-09 4570 6 14.69 USGS 01670400 2011-09-07 2890 6 11.30 USGS 01670400 2011-12-08 6840 6 18.77 USGS 01670400 2013-06-10 3040 6 11.61 USGS 01670400 2014-05-01 11600 6 27.80 USGS 01670400 2015-04-20 2420 6 9.66 USGS 01670400 2016-05-24 3120 6 11.66 USGS 01670400 2017-05-26 04:30 1680 6 8.18 USGS 01670400 2018-06-23 00:45 11600 6 27.59 USGS 01670400 2018-10-12 06:15 4570 6 14.81 USGS 01670400 2020-02-07 18:52 2530 6 10.26 USGS 01670400 2020-11-12 20:30 7510 6 20.49 USGS 01670400 2022-06-17 21:15 1900 6 8.73 USGS 01670400 2023-04-29 15:00 2830 6 10.98