# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-11-22 08:04:17 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 11180700 ALAMEDA C FLOOD CHANNEL A UNION CITY CA # # 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 11180700 1959-02-16 3700 13.55 USGS 11180700 1960-02-09 1600 11.33 USGS 11180700 1961-00-00 0.00 Bm USGS 11180700 1962-02-15 3030 12.66 USGS 11180700 1963-02-01 10500 20.40 USGS 11180700 1964-01-22 1100 10.46 USGS 11180700 1964-12-23 4580 15.98 USGS 11180700 1965-12-29 739 9.54 USGS 11180700 1967-01-22 9150 15.20 USGS 11180700 1968-01-30 2110 9.08 USGS 11180700 1969-01-19 4760 12.51 USGS 11180700 1970-01-21 5530 12.38 USGS 11180700 1970-11-29 5300 3 13.90 USGS 11180700 1971-12-26 154 7.19 USGS 11180700 1973-01-18 6130 15.20 USGS 11180700 1973-11-06 5470 14.35 USGS 11180700 1975-03-22 4280 13.53 USGS 11180700 1976-03-02 998 7.93 USGS 11180700 1977-01-03 1320 8.18 USGS 11180700 1978-01-16 3430 10.71 USGS 11180700 1979-01-15 2300 9.65 USGS 11180700 1980-02-19 10900 14.71 USGS 11180700 1981-01-29 1710 9.08 USGS 11180700 1982-03-31 14100 15.81 USGS 11180700 1983-01-24 16800 16.70 USGS 11180700 1983-11-24 7920 13.53 USGS 11180700 1985-02-08 5530 12.31 USGS 11180700 1986-02-19 22100 18.44 USGS 11180700 1987-02-13 5710 12.74 USGS 11180700 1988-01-16 2240 10.39 USGS 11180700 1988-11-23 1830 10.51 USGS 11180700 1990-02-16 2490 6 7.83 USGS 11180700 1991-03-24 3500 6 10.09 USGS 11180700 1992-02-15 3190 6 10.74 USGS 11180700 1993-01-13 10500 6 15.20 USGS 11180700 1994-02-20 2910 6 10.87 USGS 11180700 1995-01-09 18600 6 17.57 USGS 11180700 1996-02-21 9610 6 15.67 USGS 11180700 1997-01-26 11600 6 16.40 USGS 11180700 1998-02-03 25800 6 20.43 USGS 11180700 1999-02-09 7420 6 14.23 USGS 11180700 2000-02-14 6900 6 13.98 USGS 11180700 2001-01-25 1290 6 8.85 USGS 11180700 2001-12-02 3180 6 11.13 USGS 11180700 2002-12-16 13300 6 16.60 USGS 11180700 2004-02-25 2930 6 10.90 USGS 11180700 2004-12-31 5780 6 13.12 USGS 11180700 2005-12-31 15500 6 17.37 USGS 11180700 2007-02-26 4070 6 12.55 USGS 11180700 2008-01-04 13500 6 16.68 USGS 11180700 2009-03-04 6750 6 13.74 USGS 11180700 2009-10-13 13800 6 16.78 USGS 11180700 2011-03-24 12800 6 16.42 USGS 11180700 2012-01-21 3400 6 12.19 2 2012-04-13 12.66 USGS 11180700 2012-12-02 5630 6 16.08 USGS 11180700 2014-02-28 905 6 10.28 USGS 11180700 2014-12-12 6220 6 16.41 USGS 11180700 2016-01-19 3620 6 14.36 USGS 11180700 2017-02-20 19700 2,6 USGS 11180700 2018-01-09 09:45 2450 6 13.23 USGS 11180700 2019-02-13 14:30 6520 6 15.06 USGS 11180700 2020-04-05 19:15 1980 6 12.17 USGS 11180700 2021-01-28 15:35 3080 6 13.23 USGS 11180700 2021-10-25 5620 6 14.85 USGS 11180700 2022-12-31 18:30 24000 6 21.55