# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-12-24 07:57:15 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 07374200 MISSISSIPPI RIVER AT DONALDSONVILLE,LA # # 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 07374200 1851-03-27 29.11 USGS 07374200 1852-06-15 27.21 USGS 07374200 1853-05-28 26.71 USGS 07374200 1854-04-14 26.41 USGS 07374200 1855-04-07 17.61 USGS 07374200 1856-05-26 25.01 USGS 07374200 1857-03-18 25.41 USGS 07374200 1858-05-10 28.81 USGS 07374200 1859-05-06 29.31 USGS 07374200 1860-02-07 25.91 USGS 07374200 1874-00-00 28.45 Bm USGS 07374200 1884-00-00 28.76 Bm USGS 07374200 1891-03-18 26.71 USGS 07374200 1892-06-13 28.96 USGS 07374200 1893-06-26 29.41 USGS 07374200 1894-04-05 23.16 USGS 07374200 1895-04-06 17.41 USGS 07374200 1896-04-23 21.86 USGS 07374200 1897-05-13 31.56 USGS 07374200 1898-04-30 26.81 USGS 07374200 1899-04-21 26.31 USGS 07374200 1900-03-29 20.61 USGS 07374200 1901-05-19 21.11 USGS 07374200 1902-04-19 22.11 USGS 07374200 1903-04-07 31.13 USGS 07374200 1904-04-29 25.96 USGS 07374200 1905-06-10 23.11 USGS 07374200 1906-05-02 26.21 USGS 07374200 1907-02-16 28.86 USGS 07374200 1908-06-18 30.41 USGS 07374200 1909-04-07 27.46 USGS 07374200 1910-03-28 21.81 USGS 07374200 1911-05-12 24.19 USGS 07374200 1912-05-10 33.91 USGS 07374200 1913-05-08 31.55 USGS 07374200 1914-04-29 24.09 USGS 07374200 1915-03-04 25.61 USGS 07374200 1916-02-29 32.81 USGS 07374200 1917-04-24 28.33 USGS 07374200 1918-05-12 19.44 USGS 07374200 1919-04-16 25.81 USGS 07374200 1920-05-17 31.41 USGS 07374200 1921-05-12 26.11 USGS 07374200 1922-05-16 34.75 USGS 07374200 1923-04-15 29.31 USGS 07374200 1924-01-29 25.36 USGS 07374200 1925-03-11 16.77 USGS 07374200 1926-04-29 22.51 USGS 07374200 1927-05-15 36.01 USGS 07374200 1928-07-20 27.11 USGS 07374200 1929-06-10 32.81 USGS 07374200 1930-02-04 24.61 USGS 07374200 1930-12-31 19.50 USGS 07374200 1932-03-05 32.41 USGS 07374200 1933-06-15 28.91 USGS 07374200 1934-04-15 20.78 USGS 07374200 1935-05-06 28.99 USGS 07374200 1936-05-03 24.61 USGS 07374200 1937-02-27 33.29 USGS 07374200 1938-04-30 27.71 USGS 07374200 1939-04-02 29.01 USGS 07374200 1940-05-11 22.71 USGS 07374200 1940-11-15 19.70 USGS 07374200 1942-04-30 23.91 USGS 07374200 1943-06-11 29.31 USGS 07374200 1944-05-18 31.41 USGS 07374200 1945-04-29 34.11 USGS 07374200 1946-02-01 27.61 USGS 07374200 1947-05-09 25.81 USGS 07374200 1948-04-18 26.81 USGS 07374200 1949-02-22 29.11 USGS 07374200 1950-03-04 32.41 USGS 07374200 1951-03-12 25.71 USGS 07374200 1952-04-13 25.81 USGS 07374200 1953-05-28 23.21 USGS 07374200 1954-05-15 13.81 USGS 07374200 1955-04-13 25.01 USGS 07374200 1956-03-05 21.71 USGS 07374200 1957-06-11 26.21 USGS 07374200 1958-05-26 25.01 USGS 07374200 1959-03-05 19.61 USGS 07374200 1960-04-25 20.61 USGS 07374200 1961-06-02 22.01 USGS 07374200 1962-04-17 26.21 USGS 07374200 1963-04-05 22.11 USGS 07374200 1964-04-26 23.57 USGS 07374200 1965-04-26 24.76 USGS 07374200 1966-03-03 25.27 USGS 07374200 1967-06-02 21.81 USGS 07374200 1968-04-18 22.21 USGS 07374200 1969-02-22 24.51 USGS 07374200 1970-05-19 24.31 USGS 07374200 1971-03-15 22.31 USGS 07374200 1971-12-31 24.20 USGS 07374200 1973-04-09 31.11 USGS 07374200 1974-02-16 29.51 USGS 07374200 1975-04-14 31.92 USGS 07374200 1976-03-09 20.80 USGS 07374200 1977-04-22 22.60 USGS 07374200 1978-04-07 25.30