# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-04-24 01:55:39 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 01589352 GWYNNS FALLS AT WASHINGTON BLVD AT BALTIMORE, 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 01589352 1999-08-26 20:30 23900 20.03 USGS 01589352 2000-07-30 14:15 5400 10.18 USGS 01589352 2000-12-17 10:15 3630 8.45 USGS 01589352 2001-11-25 19:20 5060 9.77 USGS 01589352 2003-09-23 05:50 10700 14.02 USGS 01589352 2004-07-07 18:30 18500 17.97 USGS 01589352 2005-07-08 09:05 4820 9.53 USGS 01589352 2006-06-25 22:20 12100 14.87 USGS 01589352 2006-11-16 16:16 7550 11.92 USGS 01589352 2008-09-27 16:10 8930 12.89 USGS 01589352 2009-04-03 11:45 3430 7.99 USGS 01589352 2010-03-13 13:40 5680 10.37 USGS 01589352 2011-09-07 15:10 14900 16.40 USGS 01589352 2012-08-26 15:30 6870 11.41 USGS 01589352 2012-10-29 22:10 10300 13.75 USGS 01589352 2014-04-30 13600 15.74 USGS 01589352 2015-06-27 17:50 8930 12.89 USGS 01589352 2016-07-30 22:00 17900 17.72 USGS 01589352 2017-04-06 14:55 4970 9.68 USGS 01589352 2018-07-22 01:15 19200 18.30 USGS 01589352 2018-11-24 19:40 3730 8.35 USGS 01589352 2020-08-12 18:55 7400 11.81 USGS 01589352 2021-08-13 18:00 4930 9.64 USGS 01589352 2022-07-02 21:25 7210 11.67