# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-09-28 04:35:18 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 05474500 Mississippi River at Keokuk, 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 05474500 1851-06-06 360000 1,7 21.00 USGS 05474500 1878-06-11 150000 1 USGS 05474500 1879-06-02 110000 1 USGS 05474500 1880-06-29 271000 1 USGS 05474500 1881-04-23 241000 1 USGS 05474500 1881-10-31 293000 1 USGS 05474500 1883-05-18 201000 1 USGS 05474500 1884-04-01 236000 1 USGS 05474500 1884-10-09 170000 1 USGS 05474500 1886-05-06 212000 1 USGS 05474500 1887-05-04 156000 1 USGS 05474500 1888-05-18 314000 1 19.60 USGS 05474500 1889-04-20 84200 1 USGS 05474500 1890-07-01 178000 1 USGS 05474500 1891-05-03 141000 1 USGS 05474500 1892-06-29 306000 1 USGS 05474500 1893-05-16 203000 1 USGS 05474500 1894-06-04 158000 1 USGS 05474500 1895-03-11 59200 1 USGS 05474500 1896-06-03 161000 1 USGS 05474500 1897-04-28 230000 1 USGS 05474500 1898-03-20 108000 1 USGS 05474500 1899-06-29 159000 1 USGS 05474500 1900-04-05 124000 1 USGS 05474500 1901-03-25 150000 1 USGS 05474500 1902-07-21 181000 1 USGS 05474500 1903-06-06 270000 1 USGS 05474500 1903-10-07 186000 1 USGS 05474500 1905-06-10 212000 1 USGS 05474500 1906-04-27 192000 1 USGS 05474500 1907-04-17 178000 1 USGS 05474500 1908-06-09 178000 1 USGS 05474500 1909-05-06 181000 1 USGS 05474500 1910-03-20 124000 1 USGS 05474500 1911-02-21 156000 1 USGS 05474500 1912-04-06 220000 1 USGS 05474500 1913-03-29 169000 1 USGS 05474500 1914-06-24 122000 1 1914-01-01 11.20 USGS 05474500 1915-02-28 142000 1 USGS 05474500 1916-05-09 213000 1 USGS 05474500 1917-06-17 163000 1 USGS 05474500 1918-06-12 192000 1 1918-01-01 16.70 USGS 05474500 1919-05-08 205000 1 1919-01-01 17.15 USGS 05474500 1920-04-10 230000 1 USGS 05474500 1921-05-12 108000 1 USGS 05474500 1922-04-24 240000 1 1922-01-01 17.45 USGS 05474500 1923-04-09 148000 1 1923-01-01 12.00 USGS 05474500 1924-08-24 160000 1 USGS 05474500 1925-06-23 112000 1 1925-01-01 10.30 USGS 05474500 1926-09-28 146000 1 USGS 05474500 1927-04-03 175000 1 USGS 05474500 1928-04-12 150000 1 USGS 05474500 1929-03-23 247000 1 1929-01-01 19.30 USGS 05474500 1930-06-18 163000 1 1930-01-01 13.90 USGS 05474500 1931-07-04 52500 1 USGS 05474500 1932-04-24 106000 1 1932-01-01 10.20 USGS 05474500 1933-04-09 160000 1 1933-01-01 14.50 USGS 05474500 1934-04-22 83500 1 USGS 05474500 1935-04-11 138000 1 USGS 05474500 1936-04-09 148000 1 1936-01-01 12.30 USGS 05474500 1937-03-10 190000 1 1937-01-01 16.10 USGS 05474500 1938-09-26 194000 1,6 1938-01-01 16.40 USGS 05474500 1939-04-15 156000 1,6 USGS 05474500 1940-04-19 81700 1,6 1940-01-01 6.40 USGS 05474500 1941-04-27 154000 1,6 1941-01-01 12.30 USGS 05474500 1942-06-16 201000 1,6 1942-01-01 15.80 USGS 05474500 1943-04-18 174000 1,6 USGS 05474500 1944-05-27 256000 1,6 1944-01-01 20.85 USGS 05474500 1945-03-26 203000 1,6 1945-01-01 16.80 USGS 05474500 1946-01-11 223000 1,6 1946-01-01 16.95 USGS 05474500 1947-06-21 246000 1,6 1947-01-01 20.20 USGS 05474500 1948-03-23 234000 1,6 1948-01-01 18.90 USGS 05474500 1949-03-12 151000 1,6 1949-01-01 13.30 USGS 05474500 1950-04-25 176000 1,6 USGS 05474500 1951-04-29 265000 1,6 USGS 05474500 1952-04-27 254000 1,6 USGS 05474500 1953-04-01 137000 1,6 1953-01-01 12.50 USGS 05474500 1954-05-17 181000 1,6 USGS 05474500 1955-04-25 157000 1,6 1955-01-01 12.70 USGS 05474500 1956-04-22 132000 1,6 1956-01-01 10.20 USGS 05474500 1957-07-15 106000 1,6 1957-01-01 8.70 USGS 05474500 1958-06-13 99000 1,6 1958-01-01 8.29 USGS 05474500 1959-04-05 182000 1,6 1959-01-01 14.17 USGS 05474500 1960-04-04 290000 1,6 1960-01-01 21.83 USGS 05474500 1961-04-05 208000 1,6 1961-01-01 17.11 USGS 05474500 1962-04-07 224000 1,6 1962-01-01 18.58 USGS 05474500 1963-03-22 129000 1,6 1963-01-01 10.76 USGS 05474500 1964-05-21 96400 1,6 1964-01-01 7.96 USGS 05474500 1965-05-01 327000 1,6 22.04 USGS 05474500 1966-04-03 166000 1,6 USGS 05474500 1967-04-17 221000 1,6 USGS 05474500 1968-07-09 143000 1,6 USGS 05474500 1969-04-26 253000 1,6 USGS 05474500 1970-05-17 140000 1,6 USGS 05474500 1971-04-27 185000 1,6 USGS 05474500 1972-05-11 192000 1,6 USGS 05474500 1973-04-24 344000 1,6 23.35 1851 USGS 05474500 1974-05-22 260000 1,6 19.15 USGS 05474500 1975-05-09 252000 1,6 USGS 05474500 1976-04-28 214000 1,6 USGS 05474500 1977-08-09 79800 1,6 USGS 05474500 1978-04-24 178000 1,6 USGS 05474500 1979-04-06 257000 1,6 USGS 05474500 1980-06-16 141000 1,6 USGS 05474500 1981-04-16 162000 1,6 USGS 05474500 1982-04-17 225000 1,6 USGS 05474500 1983-04-06 224000 1,6 USGS 05474500 1984-06-29 192000 1,6 USGS 05474500 1985-03-06 207000 1,6 USGS 05474500 1986-05-21 241000 1,6 USGS 05474500 1986-10-06 268000 1,6 USGS 05474500 1988-04-08 107000 1,6 USGS 05474500 1989-04-08 126000 1,6 USGS 05474500 1990-06-20 263000 1,6 USGS 05474500 1991-04-21 190000 1,6 USGS 05474500 1992-04-30 183000 1,6 USGS 05474500 1993-07-10 446000 6 27.58 USGS 05474500 1994-05-10 157000 1,6 USGS 05474500 1995-05-14 209000 1,6 USGS 05474500 1996-05-13 236000 1,6 USGS 05474500 1997-04-22 251000 1,6 USGS 05474500 1998-04-15 253000 1,6 USGS 05474500 1999-05-28 208000 1,6 USGS 05474500 2000-06-18 209000 1,6 USGS 05474500 2001-05-15 345000 1,6 USGS 05474500 2002-06-09 199000 1,6 USGS 05474500 2003-05-25 181000 1,6 USGS 05474500 2004-06-03 262000 1,6 USGS 05474500 2005-04-15 148000 1,6 USGS 05474500 2006-04-16 160000 1,6 USGS 05474500 2007-08-28 196000 1,6 USGS 05474500 2008-06-17 438000 1,6 USGS 05474500 2009-03-12 227000 1,6 USGS 05474500 2010-06-22 233000 1,6 USGS 05474500 2011-04-25 276000 1,6 USGS 05474500 2012-05-05 128000 1,6 USGS 05474500 2013-04-22 330000 1,6 USGS 05474500 2014-07-06 382000 1,6 USGS 05474500 2015-06-19 187000 1,6 USGS 05474500 2015-12-28 210000 1,6 USGS 05474500 2016-10-03 238000 1,6 USGS 05474500 2018-09-12 238000 1,6 USGS 05474500 2019-06-01 535000 1,6 USGS 05474500 2020-04-14 229000 1,6 USGS 05474500 2021-04-12 172000 1,6 USGS 05474500 2022-04-27 176000 1,6