# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-04-27 15:33:18 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 01587500 SOUTH BRANCH PATAPSCO RIVER AT HENRYTON, MD # # 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 01587500 1949-05-15 2400 7.10 USGS 01587500 1950-09-10 2920 7.88 USGS 01587500 1950-11-25 2760 7.80 USGS 01587500 1952-05-26 4930 11.04 USGS 01587500 1952-11-22 3200 8.37 USGS 01587500 1954-05-03 1070 4.18 USGS 01587500 1955-08-13 3920 10.12 USGS 01587500 1956-07-21 12100 19.40 USGS 01587500 1957-09-13 2600 7.65 USGS 01587500 1957-12-26 2760 7.99 USGS 01587500 1959-09-02 1920 6.14 USGS 01587500 1960-06-15 750 3.52 USGS 01587500 1961-02-25 1400 4.91 USGS 01587500 1962-02-26 1280 4.65 USGS 01587500 1963-03-06 1800 5.84 USGS 01587500 1964-01-09 2160 6.69 USGS 01587500 1965-03-05 1480 5.08 USGS 01587500 1966-09-14 2640 7.73 USGS 01587500 1967-08-27 4080 10.38 USGS 01587500 1968-09-10 2210 6.81 USGS 01587500 1969-09-04 1820 5.90 USGS 01587500 1970-07-10 1360 4.83 USGS 01587500 1971-09-12 9250 16.85 USGS 01587500 1972-06-22 02:00 26900 28.14 1923 USGS 01587500 1972-12-08 2100 6.55 USGS 01587500 1974-03-30 1750 5.73 USGS 01587500 1975-09-26 08:30 14600 21.16 USGS 01587500 1976-01-01 2870 8.23 USGS 01587500 1976-10-09 2320 7.14 USGS 01587500 1978-01-26 4450 11.01 USGS 01587500 1979-09-06 04:00 5790 12.93 USGS 01587500 1979-10-01 14:30 5740 12.87