# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-12-18 01:12:51 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 01582500 GUNPOWDER FALLS AT GLENCOE, 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 01582500 1978-01-26 1450 1,2,6,8 USGS 01582500 1979-09-06 6110 6 15.30 USGS 01582500 1979-10-01 2200 1,2,6,8 USGS 01582500 1983-04-15 2630 6 9.07 USGS 01582500 1984-07-07 3150 6 10.38 USGS 01582500 1985-02-12 4900 6 13.20 USGS 01582500 1986-04-16 684 6 3.42 USGS 01582500 1987-09-08 3150 6 10.38 USGS 01582500 1988-01-20 2560 6 8.91 USGS 01582500 1989-05-06 4600 6 12.70 USGS 01582500 1989-11-16 2490 6 8.52 USGS 01582500 1990-11-10 2080 6 7.54 USGS 01582500 1992-03-27 936 6 4.34 USGS 01582500 1993-03-04 1930 6 7.18 USGS 01582500 1993-11-28 5180 6 13.72 USGS 01582500 1995-01-20 2480 6 8.50 USGS 01582500 1996-01-19 4670 6 12.84 USGS 01582500 1996-11-08 3430 6 10.54 USGS 01582500 1998-04-01 2280 6 8.06 USGS 01582500 1999-09-16 2210 6 7.88 USGS 01582500 2000-04-17 1490 6 6.00 USGS 01582500 2000-12-17 12:30 2960 6 9.57 USGS 01582500 2002-08-03 07:15 929 6 4.32 USGS 01582500 2003-02-22 20:00 4080 6 11.75 USGS 01582500 2004-09-28 21:15 4850 6 13.16 USGS 01582500 2005-07-08 13:45 3010 6 9.63 USGS 01582500 2005-10-08 19:00 2370 6 8.02 USGS 01582500 2006-11-16 20:45 4740 6 12.96 USGS 01582500 2008-02-01 20:30 2620 6 8.66 USGS 01582500 2009-08-29 05:15 2660 6 8.76 USGS 01582500 2009-12-26 14:45 2460 6 8.24 USGS 01582500 2011-09-08 13000 6 16.50 USGS 01582500 2011-11-23 08:30 3670 6 10.99 USGS 01582500 2012-10-30 6000 6 14.10 USGS 01582500 2014-04-30 18:15 4120 6 11.83 USGS 01582500 2015-03-11 19:45 2220 6 7.77 2 2015-03-05 0315 9.51 1 USGS 01582500 2016-02-24 23:15 1540 6 5.80 USGS 01582500 2017-04-06 18:30 2780 6 9.15 USGS 01582500 2018-07-25 08:30 6670 6 14.56 USGS 01582500 2018-11-25 00:15 3130 6 10.74 USGS 01582500 2019-11-01 03:15 3150 6 10.77 USGS 01582500 2020-12-25 05:40 2490 6 8.97 USGS 01582500 2021-10-30 01:55 1010 6 4.62 USGS 01582500 2022-12-23 04:45 1050 6 4.73