# # U.S. Geological Survey # National Water Information System # Retrieved: 2025-02-17 14:37:18 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 01617800 MARSH RUN AT GRIMES, 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 01617800 1964-01-09 105 2.42 USGS 01617800 1965-06-08 70.0 2.06 USGS 01617800 1966-08-11 59.0 1.93 USGS 01617800 1967-03-07 62.0 1.97 USGS 01617800 1968-08-01 58.0 1.92 USGS 01617800 1969-08-17 54.0 8 USGS 01617800 1970-07-09 96.0 2.22 USGS 01617800 1971-02-13 146 2.74 USGS 01617800 1972-06-22 268 3.44 USGS 01617800 1973-06-05 114 2.41 USGS 01617800 1973-10-29 71.0 1.98 USGS 01617800 1975-06-01 345 3.78 USGS 01617800 1975-10-18 126 2.51 USGS 01617800 1976-10-09 278 3.49 USGS 01617800 1978-03-14 179 2.92 USGS 01617800 1979-02-26 450 4.41 USGS 01617800 1980-05-21 55.0 1.87 USGS 01617800 1980-11-24 47.0 1.77 USGS 01617800 1982-05-28 65.0 1.98 USGS 01617800 1983-04-24 84.0 2.18 USGS 01617800 1984-02-14 165 2.84 USGS 01617800 1985-02-12 459 4.45 USGS 01617800 1986-03-15 76.0 2.10 USGS 01617800 1987-04-04 47.0 1.77 USGS 01617800 1988-01-20 40.0 1.70 USGS 01617800 1989-05-16 58.0 1.96 USGS 01617800 1990-01-30 26.0 1.47 2 1989-12-31 1.76 1 USGS 01617800 1991-09-19 109 2.40 USGS 01617800 1992-04-21 205 3.11 USGS 01617800 1992-12-11 133 2.60 USGS 01617800 1994-03-29 90.0 2.23 2 1994-08-18 3.32 1 USGS 01617800 1995-01-20 42.0 1.71 2 1995-02-06 1.96 1 USGS 01617800 1996-01-19 219 3.20 2 1996-02-06 1.96 1 USGS 01617800 1996-10-19 104 2.36 USGS 01617800 1998-03-21 13:00 192 3.02 USGS 01617800 1999-01-18 15:00 136 2.62 USGS 01617800 2000-08-02 21:00 87.0 2.22 USGS 01617800 2001-03-30 06:15 29.0 1.57 USGS 01617800 2002-03-20 15:00 13.0 1.22 USGS 01617800 2003-09-04 11:00 384 4.10 USGS 01617800 2003-12-11 07:30 143 2.68 USGS 01617800 2005-03-28 23:00 229 3.26 USGS 01617800 2006-06-27 21:45 128 2.56 USGS 01617800 2007-03-02 08:00 88.0 2.20 USGS 01617800 2008-05-12 11:00 97.0 2.29 USGS 01617800 2008-12-12 01:45 53.0 1.86 USGS 01617800 2010-01-25 15:30 115 2.45 USGS 01617800 2011-04-28 12:00 145 2.60 USGS 01617800 2012-05-30 125 2.60 1 USGS 01617800 2012-10-30 00:15 121 2.42 USGS 01617800 2014-05-16 09:45 257 3.10 USGS 01617800 2015-03-08 20:30 62.0 1.77 USGS 01617800 2016-06-21 23:45 142 2.36 USGS 01617800 2017-05-05 11:00 36.0 1.51 USGS 01617800 2018-09-09 20:00 216 2.80 USGS 01617800 2019-03-22 00:15 250 2.99 USGS 01617800 2020-04-30 17:00 53.9 1.78 USGS 01617800 2021-09-01 19:00 152 2.56 USGS 01617800 2022-05-07 12:15 73.7 1.95 USGS 01617800 2022-12-23 03:00 70.2 1.92 USGS 01617800 2024-04-03 16:45 88.1 2.10 2 2024-04-03 1430 2.10