# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-10-03 19:09:39 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 06810000 Nishnabotna River above Hamburg, 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 06810000 1917-06-17 21.00 5 USGS 06810000 1922-04-12 11800 16.70 USGS 06810000 1923-03-27 8800 16.00 USGS 06810000 1929-03-13 21100 22.30 6 USGS 06810000 1930-02-08 3020 2 13.80 1,6 USGS 06810000 1931-06-22 9350 18.10 USGS 06810000 1931-11-25 11100 19.10 USGS 06810000 1933-01-22 8020 17.10 USGS 06810000 1934-06-09 5620 14.60 USGS 06810000 1935-06-26 8500 17.50 USGS 06810000 1936-03-05 20600 22.20 USGS 06810000 1937-03-05 16500 21.60 USGS 06810000 1938-09-14 9650 18.20 USGS 06810000 1939-03-12 22100 2 23.00 1 USGS 06810000 1940-08-12 10700 18.90 USGS 06810000 1941-06-09 14600 20.40 USGS 06810000 1942-06-20 11700 19.20 USGS 06810000 1943-05-16 11100 19.10 USGS 06810000 1944-06-15 11800 20.80 USGS 06810000 1945-05-23 21000 22.60 USGS 06810000 1946-09-04 11300 19.70 USGS 06810000 1947-06-24 55500 26.03 USGS 06810000 1948-03-20 36300 24.50 USGS 06810000 1949-03-07 32200 25.90 USGS 06810000 1950-05-10 19900 22.50 USGS 06810000 1951-05-02 23800 24.51 USGS 06810000 1952-06-23 12800 20.92 USGS 06810000 1953-06-09 5440 14.65 USGS 06810000 1954-08-23 12600 21.32 USGS 06810000 1955-04-24 12000 18.80 USGS 06810000 1956-07-08 13500 20.90 USGS 06810000 1957-06-16 20400 21.59 USGS 06810000 1958-07-06 14600 22.75 USGS 06810000 1959-05-29 15400 21.70 USGS 06810000 1960-03-31 23900 24.56 USGS 06810000 1961-03-13 14400 21.33 USGS 06810000 1962-05-29 18000 23.62 USGS 06810000 1963-03-12 15600 22.02 USGS 06810000 1964-05-26 19900 23.32 USGS 06810000 1965-03-02 24700 24.83 USGS 06810000 1966-06-26 16000 2 USGS 06810000 1967-06-10 20000 2 24.53 1 USGS 06810000 1968-06-27 798 8.85 USGS 06810000 1969-03-18 19700 24.19 USGS 06810000 1970-05-14 10400 19.12 2 1970-03-03 20.05 USGS 06810000 1971-02-20 25000 2 1971-02-19 26.25 1 USGS 06810000 1972-09-15 25200 27.42 USGS 06810000 1973-09-27 17900 23.45 2 1973-07-04 24.39 USGS 06810000 1973-10-12 16300 23.07 USGS 06810000 1975-04-28 13300 21.63 USGS 06810000 1976-06-14 21400 25.70 USGS 06810000 1977-09-04 12200 23.24 USGS 06810000 1978-09-15 20500 25.17 USGS 06810000 1979-03-19 23000 1979-03-07 27.46 1 USGS 06810000 1980-06-04 19800 24.93 USGS 06810000 1981-07-09 3190 13.29 USGS 06810000 1982-06-15 29100 27.25 USGS 06810000 1983-02-20 12700 20.88 USGS 06810000 1984-06-16 24300 27.90 USGS 06810000 1985-02-22 12300 2 21.90 1 USGS 06810000 1986-02-27 18300 23.87 USGS 06810000 1987-05-27 31400 28.14 USGS 06810000 1988-01-31 4580 2 17.93 1 USGS 06810000 1989-09-10 32900 28.27 USGS 06810000 1990-07-27 32000 28.06 USGS 06810000 1991-06-15 27300 26.75 USGS 06810000 1992-09-16 12700 21.54 USGS 06810000 1993-07-25 37700 2 30.56 1 USGS 06810000 1994-06-23 22000 25.13 USGS 06810000 1995-05-10 15600 22.86 USGS 06810000 1996-06-22 24300 28.45 USGS 06810000 1997-02-19 18000 25.50 USGS 06810000 1998-06-17 65100 33.18 USGS 06810000 1999-08-08 25800 28.83 USGS 06810000 2000-06-14 4710 16.33 USGS 06810000 2001-03-15 14300 24.48 USGS 06810000 2002-05-13 3230 13.71 USGS 06810000 2003-05-06 7140 19.40 USGS 06810000 2004-05-26 26500 28.04 USGS 06810000 2005-05-13 18000 25.16 USGS 06810000 2006-09-18 16:45 4780 16.44 USGS 06810000 2007-05-08 55300 32.44 USGS 06810000 2008-06-14 32300 29.19 USGS 06810000 2009-04-28 9980 20.42 USGS 06810000 2010-06-14 19800 26.95 USGS 06810000 2011-02-17 16800 23.77 2 2011-06-27 24.76 1 USGS 06810000 2012-04-15 14100 23.31 USGS 06810000 2013-05-30 16200 23.66 USGS 06810000 2014-06-04 23100 26.57 USGS 06810000 2015-06-15 18700 24.93 2 2014-10-02 25.65 USGS 06810000 2015-12-15 23700 27.27 USGS 06810000 2017-05-21 19300 24.86 USGS 06810000 2018-08-21 06:30 14000 23.06 USGS 06810000 2019-03-16 12:45 39000 31.07 USGS 06810000 2019-10-12 02:15 12500 22.40 USGS 06810000 2021-03-16 04:45 3290 12.92 USGS 06810000 2022-06-08 14:30 8310 18.09 USGS 06810000 2023-02-28 11:45 8610 18.72