#
# U.S. Geological Survey
# National Water Information System
# Retrieved: 2024-12-22 12:59:34 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 01657000 BULL RUN NEAR MANASSAS, 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	01657000	1950-12-04		8600		15.12						
USGS	01657000	1952-04-26		4620		12.25						
USGS	01657000	1952-11-22		11200		16.37						
USGS	01657000	1953-12-14		1960		9.02						
USGS	01657000	1955-08-13		10900		16.23						
USGS	01657000	1956-07-05		11200		16.45						
USGS	01657000	1957-04-05		3670		11.34						
USGS	01657000	1957-12-21		8600		15.10						
USGS	01657000	1959-09-02		6120		13.53						
USGS	01657000	1960-04-05		6150		13.51						
USGS	01657000	1961-02-20		6540		13.78						
USGS	01657000	1962-03-12		7310		14.28						
USGS	01657000	1963-03-12		4620		12.16						
USGS	01657000	1964-01-09		6280		13.58						
USGS	01657000	1965-03-05		8500		14.98						
USGS	01657000	1966-09-15		4950		12.51						
USGS	01657000	1967-08-25		13000		19.27						
USGS	01657000	1968-01-14		5300	2							
USGS	01657000	1969-09-08		4140		11.55						
USGS	01657000	1970-04-14		5610		13.10						
USGS	01657000	1971-02-14		6490		13.88						
USGS	01657000	1972-06-22		76100		37.80						
USGS	01657000	1973-04-27		7870		15.06						
USGS	01657000	1973-12-21		6700		14.08						
USGS	01657000	1975-09-26		13800		19.58						
USGS	01657000	1976-01-01		9840		16.70						
USGS	01657000	1976-10-09		8880		15.93						
USGS	01657000	1978-01-26		10400		17.24						
USGS	01657000	1979-02-26		9840		17.09						
USGS	01657000	1979-10-01		14900		20.22						
USGS	01657000	1981-02-11		1650		7.31