# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-03-28 16:47:38 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 01642190 MONOCACY RIVER AT MONOCACY BLVD AT FREDERICK, 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 01642190 2003-12-12 26500 24.68 USGS 01642190 2005-04-03 09:00 20000 20.71 USGS 01642190 2006-06-28 18:45 16500 18.33 USGS 01642190 2007-03-02 23:30 18900 20.18 USGS 01642190 2008-05-12 23:15 18300 19.74 USGS 01642190 2008-12-12 18:00 17900 19.50 USGS 01642190 2009-12-27 04:30 21300 21.66 USGS 01642190 2011-04-17 17:15 26200 24.57 USGS 01642190 2011-11-23 21:15 25000 23.87 USGS 01642190 2012-10-30 20:15 26700 25.56 USGS 01642190 2014-05-01 08:00 21500 22.47 USGS 01642190 2015-06-28 14:00 15800 18.64 USGS 01642190 2016-02-25 13:45 17300 19.74 USGS 01642190 2017-05-06 02:45 11300 15.13 USGS 01642190 2018-09-10 14:30 26500 24.55 USGS 01642190 2019-03-22 13:45 17400 19.49 USGS 01642190 2020-05-01 10:45 15900 18.51 USGS 01642190 2021-09-02 12:15 29200 25.86 USGS 01642190 2022-05-08 19300 20.70 USGS 01642190 2022-12-23 18:45 14000 17.11