# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-11-25 16:23:20 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 02057700 POWDER MILL CREEK AT 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 02057700 1967-08-24 104 14.35 USGS 02057700 1967-12-12 41.0 13.35 USGS 02057700 1969-07-03 158 15.10 USGS 02057700 1970-04-03 94.0 14.20 USGS 02057700 1970-10-31 115 14.50 USGS 02057700 1972-07-05 202 15.65 USGS 02057700 1973-06-21 214 15.80 USGS 02057700 1973-12-21 94.0 14.20 USGS 02057700 1975-03-14 118 14.55 USGS 02057700 1976-03-31 158 15.10 USGS 02057700 1976-10-09 152 15.02 USGS 02057700 1978-04-17 158 15.10 USGS 02057700 1979-09-22 176 15.32 USGS 02057700 1980-04-14 104 14.34 USGS 02057700 1981-07-06 72.0 13.86 USGS 02057700 1982-06-13 115 14.50 USGS 02057700 1983-04-10 160 15.12 USGS 02057700 1984-08-12 117 14.53 USGS 02057700 1985-08-18 107 14.38 USGS 02057700 1986-08-12 161 15.14 USGS 02057700 1987-09-08 238 16.26 USGS 02057700 1988-05-16 126 14.65 USGS 02057700 1989-05-05 305 16.78 USGS 02057700 1990-07-14 415 2 17.84 USGS 02057700 1990-10-11 136 14.80 USGS 02057700 1992-04-21 235 16.06 USGS 02057700 1993-03-04 120 14.57 USGS 02057700 1994-03-28 189 15.49 USGS 02057700 1995-09-02 232 16.02