# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-05-02 03:58:18 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 05558300 ILLINOIS RIVER AT HENRY, 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 05558300 1982-03-22 104000 6 30.75 USGS 05558300 1982-12-07 108000 6 29.97 2 1982-12-08 30.70 1 USGS 05558300 1984-03-23 53700 6 24.45 2 1984-02-19 24.68 1 USGS 05558300 1985-03-05 106000 6 31.25 2 1985-03-07 32.02 1 USGS 05558300 1985-11-21 95200 6 27.92 2 1985-11-23 28.58 1 USGS 05558300 1987-05-22 46300 6 19.60 2 1986-10-08 24.13 1 USGS 05558300 1988-04-07 45100 6 20.56 2 1988-04-09 22.22 1 USGS 05558300 1989-09-11 45000 1,6 26.02 USGS 05558300 1990-03-20 40200 1,6 1990-03-15 26.96 1 USGS 05558300 1991-04-19 53700 1,6 1991-03-22 24.57 1 USGS 05558300 1992-09-11 30900 6 17.21 2 1991-12-15 18.78 1 USGS 05558300 1993-01-06 67000 1,6 1993-04-22 26.75 1 USGS 05558300 1993-10-22 47000 1,2,6 1993-10-24 22.44 1 USGS 05558300 1995-04-13 58900 6 22.66 2 1995-05-29 28.70 1 USGS 05558300 1996-05-30 78000 6 24.91 2 1996-06-03 26.49 1 USGS 05558300 1997-02-23 117000 6 27.19 2 1997-03-02 30.50 1 USGS 05558300 1998-05-10 88900 6 26.14 2 1998-05-11 27.36 1 USGS 05558300 1999-01-25 55000 6 22.65 2 1999-01-30 24.03 1 USGS 05558300 2000-07-12 40400 6 20.80 2 2000-07-13 21.11 1 USGS 05558300 2001-02-12 71800 6 24.77 USGS 05558300 2002-05-14 88500 6 26.67 2 2002-05-18 28.28 1 USGS 05558300 2003-05-12 38400 6 19.53 2 2003-07-21 20.46 1 USGS 05558300 2004-06-14 52100 6 22.53 2 2004-06-17 23.08 1 USGS 05558300 2005-01-15 84600 6 26.09 2 2005-01-17 27.66 1 USGS 05558300 2006-04-19 32400 6 18.66 2 2006-04-20 18.90 1 USGS 05558300 2007-08-26 90300 6 25.62 2 2007-08-27 26.91 1 USGS 05558300 2008-09-16 128000 6 27.96 1,2 2008-09-19 30.98 1 USGS 05558300 2008-12-30 92400 6 25.93 2 2009-03-13 31.49 1 USGS 05558300 2009-11-02 08:30 58300 6 24.14 2 2010-06-27 0530 26.42 1 USGS 05558300 2011-04-28 15:30 64000 6 25.58 2 2011-04-30 1200 26.39 1 USGS 05558300 2012-05-10 04:00 49000 6 20.52 2 2012-05-11 20.99 1 USGS 05558300 2013-04-20 09:30 161000 6 30.86 2 2013-04-22 32.91 1 USGS 05558300 2014-02-23 12:45 65400 6 23.16 USGS 05558300 2015-06-17 16:45 98500 6 27.81 2 2015-06-29 30.39 1 USGS 05558300 2015-12-31 08:15 107000 6 28.43 2 2016-01-02 29.78 1 USGS 05558300 2017-05-03 02:45 93100 6 26.38 2 2017-05-04 0530 26.95 1 USGS 05558300 2018-02-23 08:30 111000 6 26.76 2 2018-02-26 1700 29.21 USGS 05558300 2019-05-03 07:45 108000 6 28.35 2 2019-05-06 0315 31.35 USGS 05558300 2020-05-20 02:00 120000 6 29.82 2 2020-05-21 2345 31.65 USGS 05558300 2021-07-01 23:15 64200 6 23.82 2 2021-07-03 0400 24.18 USGS 05558300 2021-10-31 21:45 51600 6 23.20 2 2021-11-02 0145 23.43 USGS 05558300 2023-03-01 12:30 41900 6 20.40 2 2023-03-08 1945 21.36