#
# U.S. Geological Survey
# National Water Information System
# Retrieved: 2025-01-23 02:11:30 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 05590800 LAKE FORK AT ATWOOD, IL
#
# 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	05590800	1973-04-22		1990		12.43						
USGS	05590800	1974-06-23		2850		13.11						
USGS	05590800	1975-02-23		1500		11.09						
USGS	05590800	1976-02-17		2270		12.37						
USGS	05590800	1977-05-06		1930		11.87						
USGS	05590800	1978-08-02		2220		12.36						
USGS	05590800	1979-03-05		4030		14.03						
USGS	05590800	1980-03-31		918		9.72						
USGS	05590800	1981-08-16		1820		11.76						
USGS	05590800	1982-07-04		2940		13.23						
USGS	05590800	1983-05-03		2310		12.49						
USGS	05590800	1984-05-26		2830		13.12						
USGS	05590800	1985-02-24		3760		13.85						
USGS	05590800	1985-11-20		2000		12.79						
USGS	05590800	1986-12-02		870		9.71						
USGS	05590800	1987-12-28		1360		10.91						
USGS	05590800	1989-05-26		2210		12.73						
USGS	05590800	1990-05-16		2740	2	14.14						
USGS	05590800	1990-12-30		2530	2	13.83						
USGS	05590800	1992-07-31		2850		14.24						
USGS	05590800	1993-01-05		2490		13.76						
USGS	05590800	1994-04-12		3840		15.39						
USGS	05590800	1995-05-19		2420		14.25						
USGS	05590800	1996-05-09		2720		14.10						
USGS	05590800	1997-02-27		1770		12.54						
USGS	05590800	1998-05-04		2030		13.01						
USGS	05590800	1999-01-23		1270		11.39						
USGS	05590800	2000-05-28		1270		11.69						
USGS	05590800	2001-02-25		1770		12.54						
USGS	05590800	2002-05-13		3980		15.25						
USGS	05590800	2003-07-10		1020		10.57						
USGS	05590800	2004-03-27		2140		13.00						
USGS	05590800	2005-01-14		3140		14.40						
USGS	05590800	2006-03-12		1230		11.29						
USGS	05590800	2007-01-15		1550		12.10						
USGS	05590800	2008-06-07		3550		15.75						
USGS	05590800	2008-12-28		2720		13.93						
USGS	05590800	2009-11-18	03:15	2280		13.30						
USGS	05590800	2011-04-28	10:15	1500		11.93						
USGS	05590800	2012-05-08	10:15	311		6.16						
USGS	05590800	2013-04-19	09:45	3300		14.67						
USGS	05590800	2014-02-21	19:30	2150		13.10						
USGS	05590800	2015-06-27	12:45	1290		11.46						
USGS	05590800	2015-12-29		4120		15.82						
USGS	05590800	2017-05-01	15:00	1300		11.84						
USGS	05590800	2018-02-21	16:15	1210		11.49						
USGS	05590800	2019-01-01	21:30	1570		12.35						
USGS	05590800	2020-01-12	09:15	2180		13.80						
USGS	05590800	2021-06-29	00:45	1410		12.21						
USGS	05590800	2022-02-17	17:15	1460		12.39						
USGS	05590800	2023-05-08	23:21	1170		11.35