# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-05-03 23:52:52 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 08181500 Medina Rv at San Antonio, TX # # 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 08181500 1940-06-30 2540 6 15.97 USGS 08181500 1941-02-02 6890 6 22.93 USGS 08181500 1942-09-05 17500 6 30.92 USGS 08181500 1942-10-18 12100 6 27.20 USGS 08181500 1944-08-28 2000 6 13.33 USGS 08181500 1945-02-12 3540 6 16.96 USGS 08181500 1946-08-29 31800 2,6 1946-09-27 41.57 1 USGS 08181500 1946-10-09 1470 6 12.57 USGS 08181500 1948-08-27 2050 6 14.58 USGS 08181500 1949-06-26 17400 6 30.79 USGS 08181500 1949-10-25 5660 6 21.67 USGS 08181500 1951-05-16 2150 6 14.92 USGS 08181500 1952-09-12 801 6 9.11 USGS 08181500 1953-09-04 4960 6 20.79 USGS 08181500 1954-04-08 865 6 9.53 USGS 08181500 1955-02-06 1200 6 11.35 USGS 08181500 1956-09-01 1750 6 16.37 USGS 08181500 1957-04-29 5180 6 22.83 USGS 08181500 1958-05-03 9220 6 27.79 USGS 08181500 1958-10-30 3350 6 19.56 USGS 08181500 1959-10-04 3200 6 19.33 USGS 08181500 1961-07-23 3050 6 17.92 USGS 08181500 1961-10-26 3960 6 19.57 USGS 08181500 1963-09-14 890 6 10.22 USGS 08181500 1963-10-25 2140 6 15.84 USGS 08181500 1965-05-18 5430 6 23.52 USGS 08181500 1965-12-04 2160 6 16.68 USGS 08181500 1967-09-22 5480 6 23.56 USGS 08181500 1968-01-18 13100 6 28.56 USGS 08181500 1969-05-05 2730 6 18.32 USGS 08181500 1970-05-15 3360 6 19.71 USGS 08181500 1971-08-04 2950 6 18.88 USGS 08181500 1972-05-08 6360 6 23.15 USGS 08181500 1973-07-17 31900 6 43.59 USGS 08181500 1974-08-31 9680 6 26.18 USGS 08181500 1975-02-04 4130 6 20.86 USGS 08181500 1976-05-08 7510 6 23.48 USGS 08181500 1977-09-13 4620 6 21.46 USGS 08181500 1978-08-04 9440 6 25.95 USGS 08181500 1979-06-01 4750 6 21.61 USGS 08181500 1980-08-11 1980 6 15.84 USGS 08181500 1981-06-14 14500 6 29.04 USGS 08181500 1982-05-17 8160 6 23.30 USGS 08181500 1983-06-05 606 6 9.51 USGS 08181500 1984-08-17 326 6 7.92 USGS 08181500 1984-10-11 4080 6 18.87 USGS 08181500 1986-06-04 15900 6 31.87 USGS 08181500 1987-06-05 28600 6 37.37 USGS 08181500 1988-09-17 1330 6 11.57 USGS 08181500 1989-04-19 861 6 9.09 USGS 08181500 1990-07-16 7900 6 23.81 USGS 08181500 1991-04-05 4990 6 20.35 USGS 08181500 1991-12-22 15600 6 30.16 USGS 08181500 1993-05-06 7880 6 23.79 USGS 08181500 1994-05-14 1250 6 10.45 USGS 08181500 1994-10-08 3050 6 16.02 USGS 08181500 1996-09-10 781 6 12.30 USGS 08181500 1997-06-23 13000 6 28.14 USGS 08181500 1998-03-17 2020 6 14.99 USGS 08181500 1998-10-18 42400 6 49.47 USGS 08181500 2000-06-11 1270 6 12.81 USGS 08181500 2000-11-03 8410 6 25.50 USGS 08181500 2002-07-04 67000 6 56.10 USGS 08181500 2002-10-25 13100 6 30.51 USGS 08181500 2004-06-30 8540 6 24.97 USGS 08181500 2004-11-23 02:00 12800 2,6 29.00 5 USGS 08181500 2006-05-05 2280 6 13.00 3 USGS 08181500 2007-08-17 08:00 46000 6 36.45 USGS 08181500 2008-08-20 15:45 1800 6 10.17 USGS 08181500 2009-09-13 01:15 440 6 5.22 USGS 08181500 2010-04-18 01:30 9940 6 24.10 USGS 08181500 2011-01-09 12:30 415 6 5.09 USGS 08181500 2012-08-19 5290 6 18.49 USGS 08181500 2013-05-25 20:00 24700 6 32.37 USGS 08181500 2014-05-13 04:30 4940 6 17.89 USGS 08181500 2015-05-24 15:15 4350 6 20.89 USGS 08181500 2016-06-03 03:15 11500 6 26.62 USGS 08181500 2016-12-03 23:45 5280 6 22.14 USGS 08181500 2018-09-10 04:00 9700 6 25.60 USGS 08181500 2018-11-10 00:45 2960 6 16.81 USGS 08181500 2020-05-25 18:15 1570 6 9.25 USGS 08181500 2021-07-06 23:15 14200 6 27.93 USGS 08181500 2021-10-14 16:45 5910 5,6 22.77 USGS 08181500 2023-04-21 19:15 2520 6 15.01