# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-04-25 00:32:32 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 Iowa 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 06486000 Missouri River at Sioux City, IA # # 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 06486000 1929-04-01 190000 12.40 USGS 06486000 1930-03-06 108000 9.40 USGS 06486000 1931-06-16 54700 9.79 USGS 06486000 1932-06-16 11.70 USGS 06486000 1933-05-28 10.90 USGS 06486000 1934-03-03 13.40 1 USGS 06486000 1935-07-17 12.90 USGS 06486000 1936-03-08 11.10 1 USGS 06486000 1937-06-21 11.80 USGS 06486000 1938-03-24 13.20 USGS 06486000 1939-04-03 168000 14.35 USGS 06486000 1940-06-16 55700 8.90 USGS 06486000 1941-06-15 121000 13.00 USGS 06486000 1942-06-08 127000 13.77 USGS 06486000 1943-04-10 212000 18.72 USGS 06486000 1944-04-12 180000 15.45 USGS 06486000 1945-03-22 116000 9.35 USGS 06486000 1946-06-21 87900 8.60 USGS 06486000 1947-04-04 178000 15.10 USGS 06486000 1948-03-27 115000 9.60 2 1948-06-27 9.80 USGS 06486000 1949-04-10 178000 15.72 USGS 06486000 1950-04-25 252000 18.44 USGS 06486000 1951-04-08 152000 13.04 USGS 06486000 1952-04-14 441000 24.28 USGS 06486000 1953-06-25 109000 6 9.19 USGS 06486000 1954-06-21 51300 6 6.83 USGS 06486000 1955-03-12 56200 6 5.79 2 1955-07-10 6.19 USGS 06486000 1956-08-18 38900 6 7.10 USGS 06486000 1956-10-03 36200 6 6.33 2 1957-06-25 6.43 USGS 06486000 1958-07-02 39500 6 7.28 USGS 06486000 1959-05-31 33600 6 6.50 USGS 06486000 1960-04-03 101000 6 10.52 USGS 06486000 1961-08-10 32700 6 5.77 USGS 06486000 1962-04-02 71600 6 6.92 2 1962-03-28 8.60 USGS 06486000 1963-06-02 34400 6 6.00 USGS 06486000 1964-08-06 37400 6 6.26 USGS 06486000 1965-08-21 35600 6 5.67 USGS 06486000 1966-07-27 38200 6 6.00 USGS 06486000 1967-08-30 37100 6 4.93 2 1967-07-25 5.09 USGS 06486000 1968-07-24 38300 6 5.27 USGS 06486000 1969-04-10 77700 6 7.58 USGS 06486000 1969-10-01 51200 6 5.47 6 USGS 06486000 1971-02-19 80000 2,6 30.65 1,6 USGS 06486000 1972-07-17 55800 6 24.53 2 1972-07-21 25.06 USGS 06486000 1972-11-13 54400 6 22.97 2 1972-10-06 23.76 USGS 06486000 1974-06-23 41100 6 21.49 2 1974-08-01 21.75 USGS 06486000 1975-09-06 64900 1,6 26.41 2 1975-08-26 26.66 USGS 06486000 1976-11-20 67400 2,6 24.02 2 1976-10-08 25.59 USGS 06486000 1978-07-23 62500 6 25.42 USGS 06486000 1978-11-05 57800 6 23.48 USGS 06486000 1979-10-31 44000 6 20.53 USGS 06486000 1981-06-14 40900 6 20.97 USGS 06486000 1981-10-14 35700 6 19.81 USGS 06486000 1982-11-24 50200 6 22.78 USGS 06486000 1984-06-25 104000 6 30.91 USGS 06486000 1985-04-23 56600 6 23.94 USGS 06486000 1986-09-30 57400 6 23.23 2 1986-05-17 23.91 USGS 06486000 1986-10-01 57000 6 23.19 USGS 06486000 1988-09-15 40200 6 19.96 USGS 06486000 1988-11-03 35500 6 1989-07-18 19.20 1 USGS 06486000 1990-05-19 40400 6 20.77 USGS 06486000 1991-06-01 35200 6 19.04 USGS 06486000 1992-07-12 36500 6 19.90 USGS 06486000 1993-07-15 72200 6 27.33 USGS 06486000 1994-06-17 50600 6 22.24 USGS 06486000 1995-06-01 65900 6 25.14 USGS 06486000 1996-07-17 85700 6 27.55 USGS 06486000 1997-04-10 100000 6 25.49 2 1997-04-08 25.83 USGS 06486000 1997-11-01 73600 6 22.65 2 1997-10-13 23.24 USGS 06486000 1999-07-22 55400 6 20.93 USGS 06486000 1999-10-02 48900 6 18.82 USGS 06486000 2001-04-27 64100 6 22.35 2 2001-04-28 22.36 USGS 06486000 2002-08-22 36100 6 16.55 USGS 06486000 2003-09-11 36200 6 16.83 USGS 06486000 2004-05-30 39200 6 17.89 2 2004-06-02 18.30 USGS 06486000 2005-06-09 40900 6 17.91 USGS 06486000 2006-04-12 02:00 37400 6 16.89 USGS 06486000 2007-03-13 42100 6 18.58 USGS 06486000 2008-06-11 39800 6 18.19 USGS 06486000 2009-07-10 44800 6 19.04 USGS 06486000 2010-09-30 86600 6 25.49 2 2010-08-04 25.83 USGS 06486000 2011-07-20 192000 6 35.24 2 2011-07-21 35.25 USGS 06486000 2012-05-12 45100 6 15.46 2 2012-06-01 15.59 USGS 06486000 2013-05-28 43700 6 16.57 USGS 06486000 2014-06-20 82500 6 23.97 USGS 06486000 2014-10-02 49200 6 17.44 USGS 06486000 2016-06-18 39300 6 15.21 USGS 06486000 2017-05-29 22:45 44700 6 16.65 USGS 06486000 2018-09-22 22:00 93300 6 25.69 2 2018-06-26 0830 25.91 USGS 06486000 2019-03-17 01:30 159000 6 29.78 2 2019-06-01 0545 30.27 USGS 06486000 2019-10-02 10:30 102000 6 25.92 USGS 06486000 2020-10-18 21:30 35300 6 12.55 2 2020-10-18 2130 11.78 USGS 06486000 2022-08-16 06:30 34600 6 12.87 USGS 06486000 2023-09-21 12:30 37500 6 13.76