# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-04-25 07:09:53 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 11176400 ARROYO VALLE BL LANG CYN NR LIVERMORE 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 11176400 1964-01-21 256 3.73 USGS 11176400 1964-12-23 2330 6.12 USGS 11176400 1965-12-29 430 4.02 USGS 11176400 1967-01-21 5080 8.14 USGS 11176400 1968-01-30 492 4.35 USGS 11176400 1969-01-25 5340 8.90 USGS 11176400 1970-03-01 1710 6.22 USGS 11176400 1970-12-02 947 5.28 USGS 11176400 1971-12-25 105 3.27 USGS 11176400 1973-02-07 2040 6.56 USGS 11176400 1974-04-01 1130 5.53 USGS 11176400 1975-03-07 1350 5.80 USGS 11176400 1976-03-02 8.20 1.07 6 USGS 11176400 1977-01-03 7.00 1.05 USGS 11176400 1978-01-16 3470 4.13 USGS 11176400 1979-02-22 989 2.59 USGS 11176400 1980-02-19 5710 5.40 USGS 11176400 1981-01-29 685 2.37 USGS 11176400 1982-01-05 7030 6.22 USGS 11176400 1983-01-24 6660 6.04 USGS 11176400 1983-12-25 1940 3.26 USGS 11176400 1985-02-08 470 1.99 USGS 11176400 1986-02-17 8790 7.36 USGS 11176400 1987-02-13 676 2.24 USGS 11176400 1988-01-17 106 1.37 USGS 11176400 1989-03-11 148 1.47 USGS 11176400 1990-02-17 86.0 1.31 USGS 11176400 1991-03-24 2340 3.51 USGS 11176400 1992-02-15 2130 3.38 USGS 11176400 1993-01-13 3890 4.45 USGS 11176400 1994-02-20 166 1.51 USGS 11176400 1995-03-10 8490 7.18 USGS 11176400 1996-02-19 4110 4.58 USGS 11176400 1997-01-23 5280 5.27 USGS 11176400 1998-02-03 7750 6.73 USGS 11176400 1999-02-09 1570 3.01 USGS 11176400 2000-02-13 3560 4.25 USGS 11176400 2001-03-05 1320 2.82 USGS 11176400 2001-12-29 448 1.97 USGS 11176400 2002-12-16 3590 4.27 USGS 11176400 2004-02-25 2370 3.53 USGS 11176400 2004-12-31 1130 2.67 USGS 11176400 2005-12-31 3110 3.98 USGS 11176400 2007-02-26 328 1.80 USGS 11176400 2008-01-26 4620 4.65 USGS 11176400 2009-03-04 3210 4.51 USGS 11176400 2010-01-20 3010 6.60 USGS 11176400 2011-03-20 3570 6.38 USGS 11176400 2012-04-13 197 1.64 USGS 11176400 2012-12-23 3500 6.30 USGS 11176400 2014-02-28 39.0 1.12 USGS 11176400 2014-12-16 609 2.31 USGS 11176400 2016-03-13 1660 4.05 USGS 11176400 2017-02-21 7700 6.91 USGS 11176400 2018-03-22 13:30 452 R 1.94 R USGS 11176400 2019-01-17 06:30 3740 4.73 USGS 11176400 2020-04-06 19:15 219 1.59 USGS 11176400 2021-01-29 07:30 771 2.29 USGS 11176400 2021-12-26 04:15 1960 3.38