# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-04-19 14:27:28 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 01581920 GUNPOWDER FALLS NEAR PARKTON, 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 01581920 2000-09-20 12:30 248 6 2.56 USGS 01581920 2001-09-28 10:00 449 6 3.01 USGS 01581920 2001-11-13 12:15 335 6 2.75 USGS 01581920 2003-09-23 13:15 1200 6 5.86 USGS 01581920 2004-02-06 23:15 1610 6 6.99 USGS 01581920 2005-07-08 16:00 1050 6 5.40 USGS 01581920 2005-12-21 08:45 1390 6 6.39 USGS 01581920 2007-03-02 11:15 1710 6 7.26 USGS 01581920 2008-06-04 17:00 346 6 2.97 USGS 01581920 2009-08-29 03:45 1810 6 7.51 USGS 01581920 2009-12-26 16:45 1070 6 5.48 USGS 01581920 2011-09-08 05:30 9000 6 11.62 USGS 01581920 2011-11-23 09:15 1680 6 7.20 USGS 01581920 2012-10-30 04:15 2940 6 9.77 USGS 01581920 2014-04-30 1800 6 7.54 USGS 01581920 2015-03-11 22:00 1220 6 5.89 USGS 01581920 2016-02-04 05:45 897 6 4.86 USGS 01581920 2017-05-05 20:15 341 6 2.83 USGS 01581920 2018-07-26 00:45 2980 6 9.66 USGS 01581920 2019-03-22 05:22 1710 6 6.95 USGS 01581920 2019-11-01 02:07 1300 6 5.92 USGS 01581920 2020-12-25 05:30 1160 6 5.55 USGS 01581920 2022-05-07 18:00 527 6 3.54 USGS 01581920 2022-12-23 11:15 3.30