# # U.S. Geological Survey # National Water Information System # Retrieved: 2025-04-15 23:04:59 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 11251000 SAN JOAQUIN R BL FRIANT 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 11251000 1908-04-30 7020 1,6 USGS 11251000 1909-01-14 26800 1,6 USGS 11251000 1909-12-30 30700 6 USGS 11251000 1911-01-31 38800 1,6 USGS 11251000 1912-06-05 15300 1,6 USGS 11251000 1913-05-25 6610 1,6 USGS 11251000 1914-01-25 60000 6 21.72 USGS 11251000 1915-06-01 15900 6 13.05 USGS 11251000 1916-03-20 17000 6 13.40 USGS 11251000 1917-06-04 15600 6 13.25 USGS 11251000 1920-05-20 14000 6 12.67 USGS 11251000 1921-06-12 15300 6 13.08 USGS 11251000 1922-06-07 20500 6 14.48 USGS 11251000 1923-05-16 13100 6 12.41 USGS 11251000 1924-05-09 6120 6 9.60 USGS 11251000 1925-05-26 11500 6 11.85 USGS 11251000 1926-05-05 9150 6 10.90 USGS 11251000 1927-05-17 14300 6 12.77 USGS 11251000 1928-03-25 13100 6 12.35 USGS 11251000 1929-06-16 12300 6 12.06 USGS 11251000 1930-05-21 5290 6 9.20 USGS 11251000 1931-04-22 3380 6 7.99 USGS 11251000 1932-02-07 20500 6 14.50 USGS 11251000 1933-06-14 8900 6 10.78 USGS 11251000 1933-12-13 5290 6 9.25 USGS 11251000 1935-04-08 15700 6 13.16 USGS 11251000 1936-02-22 25000 6 15.70 USGS 11251000 1937-02-06 36400 6 18.20 USGS 11251000 1937-12-11 77200 6 23.80 USGS 11251000 1939-04-05 4700 6 7.64 USGS 11251000 1940-03-27 13400 6 12.20 USGS 11251000 1941-02-12 16800 6 13.52 USGS 11251000 1942-05-26 10500 6 10.97 USGS 11251000 1943-01-23 11200 6 11.29 USGS 11251000 1944-04-07 2640 6 5.99 USGS 11251000 1945-06-15 6540 6 8.89 USGS 11251000 1946-05-07 6560 6 8.90 USGS 11251000 1947-04-23 3020 6 6.38 USGS 11251000 1948-06-30 4220 6 7.29 USGS 11251000 1949-06-18 5000 6 7.87 USGS 11251000 1950-04-29 2750 6 6.16 USGS 11251000 1950-12-18 5050 6 7.84 USGS 11251000 1952-04-14 8000 6 9.64 USGS 11251000 1952-10-16 1640 6 5.03 USGS 11251000 1954-05-21 2510 6 5.86 USGS 11251000 1954-11-29 1030 6 4.30 USGS 11251000 1956-01-05 7120 6 9.00 USGS 11251000 1956-10-25 1090 6 4.34 USGS 11251000 1958-04-06 7570 6 9.28 USGS 11251000 1959-08-13 254 6 2.83 USGS 11251000 1960-06-16 407 6 3.26 USGS 11251000 1960-12-10 973 6 4.19 USGS 11251000 1962-02-11 764 6 3.91 USGS 11251000 1963-06-20 2500 6 5.73 USGS 11251000 1964-08-10 183 6 2.62 USGS 11251000 1965-07-10 215 6 2.70 USGS 11251000 1966-07-13 161 6 2.60 2 1966-07-29 2.62 USGS 11251000 1967-05-23 8230 6 9.66 USGS 11251000 1968-04-28 220 6 2.74 USGS 11251000 1969-06-06 12400 6 11.69 6 USGS 11251000 1970-02-04 1960 6 5.34 USGS 11251000 1971-06-22 270 6 3.07 USGS 11251000 1972-06-06 208 6 2.72 USGS 11251000 1973-02-14 3900 6 7.10 USGS 11251000 1974-01-22 1380 6 4.66 USGS 11251000 1975-07-28 182 6 2.77 USGS 11251000 1976-05-01 287 6 3.00 USGS 11251000 1977-08-08 233 6 2.88 USGS 11251000 1978-04-26 7640 6 9.83 USGS 11251000 1979-02-05 1040 6 4.29 USGS 11251000 1980-02-21 8060 6 10.11 USGS 11251000 1981-06-29 232 6 2.72 USGS 11251000 1982-04-12 8250 6 10.23 USGS 11251000 1983-07-06 12300 6 11.99 USGS 11251000 1983-12-28 4660 6 7.78 USGS 11251000 1985-06-13 180 6 2.71 USGS 11251000 1986-02-18 15500 6 13.41 1941 USGS 11251000 1987-07-19 196 6 2.71 USGS 11251000 1988-07-19 196 6 2.71 USGS 11251000 1989-08-10 225 6 2.82 USGS 11251000 1990-08-06 253 6 2.90 USGS 11251000 1991-07-25 260 6 3.04 USGS 11251000 1992-08-24 398 6 3.63 USGS 11251000 1993-06-28 4070 6 7.81 USGS 11251000 1994-07-26 273 6 3.05 USGS 11251000 1995-03-11 12500 6 12.09 USGS 11251000 1996-05-16 7100 6 9.51 USGS 11251000 1997-01-03 60300 6 22.97 USGS 11251000 1998-06-17 7960 6 9.92 USGS 11251000 1999-06-03 2800 6 6.29 USGS 11251000 2000-06-18 2590 6 6.03 USGS 11251000 2001-09-05 911 6 4.15 USGS 11251000 2002-07-15 284 6 2.89 USGS 11251000 2003-06-08 2940 6 6.34 USGS 11251000 2004-09-18 437 6 3.44 USGS 11251000 2005-05-24 8750 6 10.28 USGS 11251000 2006-04-05 10300 6 11.06 USGS 11251000 2007-05-27 369 6 3.13 USGS 11251000 2008-08-10 373 6 3.11 USGS 11251000 2009-07-10 385 6 3.31 USGS 11251000 2010-04-12 1740 6 5.09 USGS 11251000 2011-07-07 8560 6 10.16 USGS 11251000 2012-05-16 1100 6 4.23 USGS 11251000 2013-04-27 1070 6 4.19 USGS 11251000 2014-07-02 1400 6 4.58 USGS 11251000 2015-07-18 2020 6 5.42 USGS 11251000 2016-07-21 1410 6 4.53 USGS 11251000 2017-02-12 9580 6 11.08 2 2017-02-12 1200 11.09 USGS 11251000 2018-04-04 12:15 1300 6 4.39 USGS 11251000 2019-05-29 12:45 7090 6 9.56 USGS 11251000 2020-07-04 14:45 649 6 3.44 2 2020-02-20 1100 3.48 USGS 11251000 2021-01-06 15:00 465 6 3.19 2 2020-10-29 3.20 USGS 11251000 2022-06-09 19:45 1810 6 4.94 USGS 11251000 2023-05-22 14:15 10400 6 11.24 USGS 11251000 2024-04-27 04:00 3220 6 6.36