# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-12-01 00:55:01 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 01589300 GWYNNS FALLS AT VILLA NOVA, 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 01589300 1956-07-21 5270 12.60 USGS 01589300 1957-04-05 615 4.57 USGS 01589300 1958-01-25 1000 6.08 USGS 01589300 1959-09-02 511 4.12 USGS 01589300 1960-09-12 1280 7.00 USGS 01589300 1961-04-13 771 5.40 USGS 01589300 1962-03-12 912 5.91 USGS 01589300 1962-11-10 1060 6.37 USGS 01589300 1964-01-09 885 5.65 USGS 01589300 1965-03-05 775 5.26 USGS 01589300 1966-02-13 1130 6.44 USGS 01589300 1967-08-27 2010 8.92 USGS 01589300 1968-09-10 2850 10.70 USGS 01589300 1969-09-04 987 5.99 USGS 01589300 1970-02-10 685 4.90 USGS 01589300 1971-08-27 2370 9.71 USGS 01589300 1972-06-22 16200 21.50 USGS 01589300 1973-04-01 1390 8.16 USGS 01589300 1974-03-30 1130 5.38 USGS 01589300 1975-09-26 4210 10.75 USGS 01589300 1976-01-01 2070 7.26 USGS 01589300 1976-10-03 1070 5.05 USGS 01589300 1978-01-26 2380 7.86 USGS 01589300 1979-09-06 02:00 6050 12.82 USGS 01589300 1979-10-01 2860 8.51 USGS 01589300 1981-06-14 2420 7.80 USGS 01589300 1982-06-13 1380 5.84 USGS 01589300 1983-06-20 1620 6.34 USGS 01589300 1984-08-13 12:30 8690 15.50 USGS 01589300 1985-02-12 2040 7.61 USGS 01589300 1986-04-15 821 4.62 USGS 01589300 1987-09-08 2110 7.75 USGS 01589300 1987-11-29 1570 6.57 USGS 01589300 1996-11-09 3040 9.63 USGS 01589300 1998-03-09 08:00 1820 7.13 USGS 01589300 1999-09-16 20:15 2950 9.37 USGS 01589300 2000-03-22 02:45 1520 6.46 USGS 01589300 2000-12-17 10:00 1870 7.23 USGS 01589300 2001-11-25 19:30 724 4.32 USGS 01589300 2003-09-23 08:00 1980 7.56 USGS 01589300 2004-07-07 17:30 2760 9.00 USGS 01589300 2005-01-14 10:15 1760 7.08 USGS 01589300 2005-10-08 16:30 3360 10.14 USGS 01589300 2006-11-16 22:30 2040 7.68 USGS 01589300 2008-09-27 16:30 1990 7.58 USGS 01589300 2009-08-28 10:00 1550 6.56 USGS 01589300 2010-03-13 17:00 1520 6.50 USGS 01589300 2011-09-07 6840 14.49 USGS 01589300 2012-08-26 16:00 1890 7.44 USGS 01589300 2012-10-29 23:30 4060 11.38 USGS 01589300 2014-04-30 19:30 5420 13.03 USGS 01589300 2015-09-30 06:15 2920 9.60 USGS 01589300 2016-07-30 22:15 4700 12.22 USGS 01589300 2017-04-06 19:00 1760 7.13 USGS 01589300 2018-07-24 03:39 4430 11.88 USGS 01589300 2018-12-16 02:38 1860 7.38 USGS 01589300 2019-10-31 23:15 1870 7.39 USGS 01589300 2021-03-24 16:38 1710 7.00 USGS 01589300 2021-10-29 19:45 2020 7.77 USGS 01589300 2022-12-23 01:23 1350 5.95