# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-12-22 21:49:00 EST # # ---------------------------------- 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 01587000 NORTH BRANCH PATAPSCO RIV NEAR MARRIOTTSVILLE, 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 01587000 1929-10-02 3600 2 9.60 5 USGS 01587000 1931-08-10 1590 6.50 USGS 01587000 1932-03-28 2060 7.20 USGS 01587000 1933-08-24 19500 20.80 USGS 01587000 1934-09-17 7950 14.00 USGS 01587000 1935-09-04 2710 8.30 USGS 01587000 1936-02-27 2600 8.14 USGS 01587000 1937-04-26 3840 9.80 USGS 01587000 1937-11-13 7830 13.93 USGS 01587000 1939-01-30 2780 8.73 USGS 01587000 1940-04-20 3050 9.07 USGS 01587000 1940-11-27 1470 6.53 USGS 01587000 1942-08-14 3540 9.80 USGS 01587000 1942-10-16 2360 8.01 USGS 01587000 1944-01-04 6500 13.38 USGS 01587000 1945-07-31 7650 14.46 USGS 01587000 1946-06-02 7100 14.00 USGS 01587000 1947-05-19 1820 7.09 USGS 01587000 1948-01-01 3960 10.37 USGS 01587000 1949-07-13 2720 8.60 USGS 01587000 1950-09-10 3680 10.25 USGS 01587000 1951-02-07 2870 9.32 USGS 01587000 1952-05-26 6150 13.10 USGS 01587000 1952-11-22 6500 13.45 USGS 01587000 1954-05-04 1870 6 7.77 USGS 01587000 1955-08-13 138 6 3.56 USGS 01587000 1956-07-21 7330 6 14.20 USGS 01587000 1957-04-06 855 6 5.57 USGS 01587000 1958-02-28 1280 6 6.60 USGS 01587000 1959-09-02 66.0 6 4.15 USGS 01587000 1960-02-18 38.0 6 3.74