# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-10-31 19:42:46 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 12027500 CHEHALIS RIVER NEAR GRAND MOUND, WA # # 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 12027500 1929-03-27 13700 8.00 USGS 12027500 1930-02-08 12200 7.26 USGS 12027500 1931-04-01 19400 10.39 USGS 12027500 1932-02-27 23500 11.29 USGS 12027500 1932-12-03 24900 11.55 USGS 12027500 1933-12-21 45700 15.00 USGS 12027500 1935-01-23 38000 17.08 USGS 12027500 1936-01-13 36300 16.77 USGS 12027500 1937-04-15 24300 14.33 USGS 12027500 1937-12-29 48400 18.39 USGS 12027500 1939-02-16 24800 14.39 USGS 12027500 1939-12-17 22700 13.90 USGS 12027500 1941-01-19 18800 12.69 USGS 12027500 1941-12-20 26900 15.30 USGS 12027500 1943-02-07 20200 13.23 USGS 12027500 1943-12-04 16400 12.30 USGS 12027500 1945-02-09 27000 15.29 USGS 12027500 1945-12-30 23100 14.33 USGS 12027500 1947-01-26 24200 14.57 USGS 12027500 1948-01-03 20000 13.57 USGS 12027500 1949-02-18 36500 16.70 USGS 12027500 1950-02-26 26300 15.41 USGS 12027500 1951-02-10 38000 16.96 USGS 12027500 1952-02-05 18800 13.12 USGS 12027500 1953-01-10 20500 13.69 USGS 12027500 1954-01-06 34700 16.53 USGS 12027500 1955-02-09 18100 12.90 USGS 12027500 1955-12-22 35100 16.58 USGS 12027500 1957-02-27 20900 13.89 USGS 12027500 1957-12-27 18500 13.16 USGS 12027500 1958-11-13 22500 14.31 USGS 12027500 1959-11-24 24700 14.82 USGS 12027500 1961-02-22 27000 15.29 USGS 12027500 1961-12-21 15900 12.30 USGS 12027500 1962-11-21 29800 15.78 USGS 12027500 1964-01-26 35700 16.66 USGS 12027500 1964-12-24 26200 15.12 USGS 12027500 1966-01-07 21900 14.16 USGS 12027500 1966-12-14 34400 16.48 USGS 12027500 1968-02-05 24800 14.83 USGS 12027500 1969-02-12 17500 12.91 USGS 12027500 1970-01-28 23300 14.62 USGS 12027500 1971-01-26 40800 17.29 USGS 12027500 1972-01-21 49200 18.21 USGS 12027500 1972-12-28 21900 14.27 USGS 12027500 1974-01-17 37400 16.88 USGS 12027500 1975-01-15 26900 15.44 USGS 12027500 1975-12-05 44800 17.73 USGS 12027500 1977-03-09 15200 12.32 USGS 12027500 1977-12-03 36500 16.79 USGS 12027500 1979-02-08 18300 13.38 USGS 12027500 1980-01-13 19000 13.60 USGS 12027500 1980-12-27 24000 14.87 USGS 12027500 1982-01-25 27300 15.50 USGS 12027500 1982-12-05 25600 15.19 USGS 12027500 1984-01-26 19200 13.71 USGS 12027500 1984-11-29 18000 13.27 USGS 12027500 1986-01-20 32100 16.49 USGS 12027500 1986-11-25 51600 18.41 USGS 12027500 1987-12-11 16400 13.88 USGS 12027500 1988-12-31 14400 13.22 USGS 12027500 1990-01-10 68700 19.34 USGS 12027500 1990-11-25 48000 18.12 USGS 12027500 1992-01-30 19600 14.63 USGS 12027500 1993-04-12 10400 11.02 USGS 12027500 1994-03-04 13100 12.42 USGS 12027500 1994-12-21 35900 16.97 USGS 12027500 1996-02-09 74800 19.98 USGS 12027500 1996-12-30 38700 17.29 USGS 12027500 1998-01-15 21400 14.53 USGS 12027500 1998-11-26 36500 17.04 USGS 12027500 1999-12-17 31000 16.34 USGS 12027500 2001-02-05 5750 7.14 USGS 12027500 2001-12-18 31900 16.33 USGS 12027500 2003-02-01 23100 14.56 USGS 12027500 2004-01-31 20400 13.88 USGS 12027500 2005-01-19 20700 14.17 USGS 12027500 2006-01-31 37900 16.54 USGS 12027500 2006-11-08 32700 15.77 USGS 12027500 2007-12-04 79100 20.23 USGS 12027500 2009-01-08 50700 18.18 USGS 12027500 2009-11-18 19400 13.04 USGS 12027500 2011-01-17 23900 14.24 USGS 12027500 2012-03-16 24500 14.39 USGS 12027500 2012-11-21 27000 14.95 USGS 12027500 2014-02-18 27800 15.13 USGS 12027500 2015-01-06 28000 15.16 USGS 12027500 2015-12-10 37700 16.84 USGS 12027500 2017-02-10 30800 15.77 USGS 12027500 2017-12-30 14:45 20100 13.42 3,2 2018-05-11 1730 131.46 6 USGS 12027500 2018-12-19 09:00 13600 R 138.86 USGS 12027500 2019-12-22 02:15 27300 R 142.68 USGS 12027500 2021-01-14 07:15 28900 142.88 USGS 12027500 2022-01-08 01:45 51300 145.21 USGS 12027500 2022-12-28 16:15 19100 140.84