# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-04-16 18:01:01 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 11456000 NAPA R NR ST HELENA 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 11456000 1929-12-15 4480 8.80 USGS 11456000 1931-01-23 920 4.32 USGS 11456000 1931-12-27 5980 9.75 USGS 11456000 1940-02-27 11700 14.50 USGS 11456000 1941-04-04 7870 11.64 USGS 11456000 1942-02-06 11800 14.60 USGS 11456000 1943-01-21 7600 11.43 USGS 11456000 1944-03-04 4910 9.10 USGS 11456000 1945-02-01 4560 8.75 USGS 11456000 1945-12-27 4060 8.23 USGS 11456000 1947-02-12 2890 6.88 USGS 11456000 1948-03-23 2310 6.12 USGS 11456000 1949-03-11 4820 9.42 USGS 11456000 1950-02-04 4910 9.42 USGS 11456000 1950-12-03 7680 11.90 USGS 11456000 1952-02-01 4480 8.65 USGS 11456000 1952-12-07 8950 12.47 USGS 11456000 1954-01-17 8020 11.75 USGS 11456000 1954-11-15 670 3.67 USGS 11456000 1955-12-22 12600 15.17 USGS 11456000 1957-02-24 3110 7.09 USGS 11456000 1958-02-24 9640 13.43 USGS 11456000 1959-02-17 4890 9.22 6 USGS 11456000 1960-02-08 11600 14.48 USGS 11456000 1961-01-31 2160 6.38 USGS 11456000 1962-02-13 7730 11.60 USGS 11456000 1963-01-31 12300 15.30 USGS 11456000 1964-01-20 5020 9.52 USGS 11456000 1965-01-05 11800 14.96 USGS 11456000 1966-01-05 9190 13.13 USGS 11456000 1967-01-21 11100 15.01 USGS 11456000 1968-01-29 4970 9.85 USGS 11456000 1969-01-13 6600 11.45 USGS 11456000 1970-01-24 9450 13.81 USGS 11456000 1970-12-03 9700 14.00 USGS 11456000 1971-12-27 1120 5.03 USGS 11456000 1973-01-16 11300 15.10 USGS 11456000 1974-03-30 6680 11.53 USGS 11456000 1975-03-21 8540 13.10 USGS 11456000 1976-02-29 203 4.57 USGS 11456000 1977-01-02 130 3.74 6 USGS 11456000 1978-01-16 10000 16.19 USGS 11456000 1979-01-11 2480 9.41 USGS 11456000 1980-02-17 7200 14.00 USGS 11456000 1981-01-27 3660 10.35 USGS 11456000 1981-12-19 10000 16.30 USGS 11456000 1983-03-13 10700 16.79 USGS 11456000 1983-12-25 9060 15.46 USGS 11456000 1985-02-08 7390 14.08 USGS 11456000 1986-02-17 16900 18.52 USGS 11456000 1987-02-13 2730 9.43 USGS 11456000 1988-01-04 1390 7.43 USGS 11456000 1989-03-11 3730 10.78 USGS 11456000 1990-02-16 1370 7.39 USGS 11456000 1991-03-04 6940 14.26 USGS 11456000 1992-02-20 2890 9.65 USGS 11456000 1993-01-20 7930 16.67 USGS 11456000 1994-02-20 900 6.50 USGS 11456000 1995-03-09 11100 18.51 USGS 11456000 1996-02-04 5800 2 14.46 USGS 11456000 2001-03-04 3280 6 10.19 USGS 11456000 2001-12-01 3970 6 11.08 USGS 11456000 2002-12-16 10200 6 16.47 USGS 11456000 2003-12-29 7760 6 14.92 USGS 11456000 2005-03-22 3890 6 10.80 USGS 11456000 2005-12-31 18300 6 23.61 USGS 11456000 2006-12-26 1350 6 6.87 USGS 11456000 2008-01-04 4460 6 14.08 USGS 11456000 2009-02-22 2800 6 11.06 USGS 11456000 2010-01-20 3740 6 12.99 USGS 11456000 2011-03-20 7330 6 14.99 USGS 11456000 2012-03-14 3500 6 10.95 USGS 11456000 2012-12-23 9690 6 16.87 USGS 11456000 2014-02-09 2200 6 8.77 USGS 11456000 2014-12-11 5540 6 15.63 USGS 11456000 2016-03-06 4520 6 13.85 USGS 11456000 2017-02-07 9340 6 19.20 USGS 11456000 2018-03-22 08:15 3970 6 11.31 USGS 11456000 2019-02-27 04:15 9570 6 19.50 USGS 11456000 2019-12-07 17:45 696 6 4.31 USGS 11456000 2021-01-27 06:30 178 6 2.26 USGS 11456000 2021-10-24 14:30 7560 6 16.82 USGS 11456000 2023-01-09 08:45 7150 6 16.71