# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-04-26 14:32:00 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 01594526 WESTERN BRANCH AT UPPER MARLBORO, 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 01594526 1985-10-03 940 8.57 USGS 01594526 1986-12-25 1290 10.15 USGS 01594526 1988-01-20 1030 9.06 USGS 01594526 1988-11-28 714 7.22 USGS 01594526 1993-03-05 1510 8 USGS 01594526 1994-03-03 13:00 2460 12.80 USGS 01594526 1995-03-09 12:15 1700 11.16 USGS 01594526 1996-01-19 23:00 2720 13.20 USGS 01594526 1997-05-26 19:15 2030 11.98 USGS 01594526 1998-02-05 13:30 2350 12.62 USGS 01594526 1999-09-16 22:45 4190 15.39 USGS 01594526 2000-09-26 13:15 1340 10.11 USGS 01594526 2000-12-17 21:15 1410 10.34 USGS 01594526 2002-04-29 01:30 641 6.70 USGS 01594526 2003-02-23 10:15 2590 13.00 USGS 01594526 2004-02-07 06:45 1960 11.82 USGS 01594526 2005-05-21 00:15 2610 13.04 USGS 01594526 2006-06-26 22:15 2180 12.31 USGS 01594526 2006-11-17 03:45 3950 15.05 USGS 01594526 2008-05-12 11:45 7980 18.55 USGS 01594526 2009-05-07 18:15 1150 9.50 USGS 01594526 2009-12-26 18:15 2910 13.50 USGS 01594526 2011-09-08 08:30 13000 21.18 USGS 01594526 2011-12-08 06:30 3390 14.24 USGS 01594526 2012-10-30 09:30 4100 15.26 USGS 01594526 2014-05-01 04:45 3810 14.85 USGS 01594526 2015-06-28 07:30 1890 11.65 USGS 01594526 2016-02-25 14:30 1840 11.53 USGS 01594526 2017-07-29 11:45 2840 13.39 USGS 01594526 2018-06-04 05:00 3420 R 15.17 USGS 01594526 2018-12-16 13:00 2210 R 13.40 USGS 01594526 2020-07-07 09:15 3340 15.07 USGS 01594526 2020-11-12 17:15 2490 13.90 USGS 01594526 2022-08-11 11:30 2160 13.29