# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-04-20 02:42:32 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 01618000 POTOMAC RIVER AT SHEPHERDSTOWN, WV # # 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 01618000 1889-06-01 290000 7 39.20 USGS 01618000 1924-05-13 168000 7 29.80 USGS 01618000 1929-04-17 126000 25.53 USGS 01618000 1929-10-23 82400 19.83 USGS 01618000 1931-05-24 32200 10.92 USGS 01618000 1932-05-14 119000 24.75 USGS 01618000 1933-04-21 77800 19.10 USGS 01618000 1934-01-08 33600 11.20 USGS 01618000 1934-12-02 64400 17.00 USGS 01618000 1936-03-19 335000 42.07 USGS 01618000 1937-04-27 207000 33.20 USGS 01618000 1937-10-29 138000 26.78 USGS 01618000 1939-02-05 86500 20.36 USGS 01618000 1940-04-21 69400 17.75 USGS 01618000 1941-04-06 45200 13.53 USGS 01618000 1942-05-24 77100 18.97 USGS 01618000 1942-10-16 201000 32.68 USGS 01618000 1944-05-08 52600 14.94 USGS 01618000 1945-09-19 79000 19.31 USGS 01618000 1946-06-03 40600 12.65 USGS 01618000 1947-03-16 28200 9.95 USGS 01618000 1948-04-15 73800 18.49 USGS 01618000 1949-06-19 82300 19.84 USGS 01618000 1950-02-03 49900 14.36 USGS 01618000 1951-06-15 81000 19.60 USGS 01618000 1952-04-29 77800 19.09 USGS 01618000 1952-11-23 83600 19.98 USGS 01618000 1954-03-03 80200 19.47 USGS 01618000 1955-08-20 124000 25.26 USGS 01618000 1956-04-08 52000 14.79 USGS 01618000 1957-02-11 54700 15.28 USGS 01618000 1958-05-07 58100 15.88 USGS 01618000 1959-06-04 29600 10.32 USGS 01618000 1960-05-10 86200 20.35 USGS 01618000 1961-02-20 74300 18.57 USGS 01618000 1962-03-23 83000 19.90 USGS 01618000 1963-03-21 91400 21.10 USGS 01618000 1964-04-30 72600 18.30 USGS 01618000 1965-03-06 71100 18.07 USGS 01618000 1966-02-14 60100 16.23 USGS 01618000 1967-03-08 102000 22.54 USGS 01618000 1968-03-18 57000 15.69 USGS 01618000 1969-03-26 23600 8.96 USGS 01618000 1970-04-03 80000 19.45 USGS 01618000 1971-02-24 69800 17.86 USGS 01618000 1972-06-23 187000 31.58 USGS 01618000 1973-04-29 65000 17.06 USGS 01618000 1973-12-28 80600 19.52 USGS 01618000 1975-03-21 99400 22.19 USGS 01618000 1976-01-02 72700 18.33 USGS 01618000 1976-10-10 19:00 124000 25.31 USGS 01618000 1978-03-16 89400 20.81 USGS 01618000 1979-02-27 07:00 110000 23.60 USGS 01618000 1980-05-02 50900 14.57 USGS 01618000 1981-04-14 41500 12.79 USGS 01618000 1982-06-14 62700 16.64 USGS 01618000 1983-04-26 78600 19.17 USGS 01618000 1984-02-15 22:00 131000 26.07 USGS 01618000 1985-02-13 53600 15.08 USGS 01618000 1985-11-07 187000 31.44 USGS 01618000 1987-04-18 86900 20.44 USGS 01618000 1988-05-19 72300 18.19 USGS 01618000 1989-05-17 60100 16.20 USGS 01618000 1990-05-30 35100 11.49 USGS 01618000 1991-01-18 59600 16.12 USGS 01618000 1992-04-23 39900 12.46 USGS 01618000 1993-03-05 99100 22.15 USGS 01618000 2001-03-22 23:00 41900 12.86 USGS 01618000 2002-04-23 23:00 38100 12.10 USGS 01618000 2003-09-20 16:30 83200 19.88 USGS 01618000 2003-12-12 08:15 74100 18.48 USGS 01618000 2017-05-06 15:45 53200 14.53 USGS 01618000 2018-06-04 17:15 112000 23.02 USGS 01618000 2018-12-17 04:00 105000 22.12 USGS 01618000 2020-05-01 21:00 57800 15.25 USGS 01618000 2021-03-02 05:00 72300 17.54 USGS 01618000 2022-05-08 16:30 89200 20.00 USGS 01618000 2023-03-05 04:15 30500 10.27