# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-04-26 22:16:20 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 01591000 PATUXENT RIVER NEAR UNITY, 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 01591000 1945-08-01 8060 13.58 USGS 01591000 1946-06-02 1920 8.02 USGS 01591000 1947-08-21 1300 6.14 USGS 01591000 1948-01-01 1080 5.73 USGS 01591000 1948-12-30 1100 5.81 USGS 01591000 1950-03-23 1240 6.03 USGS 01591000 1950-11-25 1830 6.99 USGS 01591000 1952-09-01 3490 8.95 USGS 01591000 1952-11-22 2220 8.09 USGS 01591000 1954-03-01 494 4.78 USGS 01591000 1955-08-13 2200 8.06 USGS 01591000 1956-07-21 10700 14.35 USGS 01591000 1957-02-10 240 3.75 USGS 01591000 1957-12-20 2290 8.17 USGS 01591000 1959-09-03 788 5.57 USGS 01591000 1960-02-19 446 4.51 USGS 01591000 1961-04-13 828 5.67 USGS 01591000 1962-05-24 716 5.39 USGS 01591000 1963-03-06 920 5.90 USGS 01591000 1964-01-09 1340 6.75 USGS 01591000 1965-03-05 934 5.93 USGS 01591000 1966-09-14 2920 8.90 USGS 01591000 1967-08-27 1800 7.52 USGS 01591000 1968-09-10 1490 7.01 USGS 01591000 1969-07-26 1590 7.18 USGS 01591000 1970-05-24 1090 6.28 USGS 01591000 1971-09-11 21800 18.60 USGS 01591000 1972-06-22 14500 16.10 USGS 01591000 1973-04-01 965 6.00 USGS 01591000 1974-03-30 961 5.99 USGS 01591000 1975-09-26 7680 12.69 USGS 01591000 1976-01-01 2040 7.82 USGS 01591000 1976-10-09 1160 6.41 USGS 01591000 1978-01-26 2790 8.75 USGS 01591000 1979-09-06 3150 9.15 USGS 01591000 1979-10-01 6190 11.72 USGS 01591000 1981-02-11 422 4.37 USGS 01591000 1982-02-03 925 5.82 USGS 01591000 1983-06-21 2010 7.76 USGS 01591000 1983-12-13 1330 6.69 USGS 01591000 1985-02-12 2370 8.24 USGS 01591000 1986-04-16 451 4.47 USGS 01591000 1986-12-25 1200 6.43 USGS 01591000 1988-05-24 1550 7.08 USGS 01591000 1989-05-06 4640 10.54 USGS 01591000 1989-11-16 893 5.75 USGS 01591000 1990-10-23 2850 8.82 USGS 01591000 1992-07-25 639 5.06 USGS 01591000 1993-03-04 1420 6.85 USGS 01591000 1993-11-28 2980 8.97 USGS 01591000 1995-01-20 996 5.99 USGS 01591000 1996-09-06 4610 10.52 USGS 01591000 1996-12-13 1290 6.60 USGS 01591000 1998-03-21 08:00 1890 7.60 USGS 01591000 1999-09-16 15:45 731 5.32 USGS 01591000 2000-09-26 02:15 695 5.22 USGS 01591000 2001-06-23 00:15 799 5.50 USGS 01591000 2002-05-28 01:45 414 4.34 USGS 01591000 2003-06-13 23:15 3900 9.81 USGS 01591000 2003-12-11 07:30 4120 10.02 USGS 01591000 2005-06-10 02:15 1760 7.25 USGS 01591000 2006-06-27 23:30 4330 10.36 USGS 01591000 2006-11-16 20:15 4420 10.31 USGS 01591000 2008-05-12 05:15 1060 5.95 USGS 01591000 2009-07-24 01:45 500 4.54 USGS 01591000 2009-12-26 10:45 1190 6.22 USGS 01591000 2011-09-08 07:00 1560 6.92 USGS 01591000 2012-07-09 12:45 1710 7.18 USGS 01591000 2013-01-31 05:45 4620 10.49 USGS 01591000 2014-04-30 16:45 2680 8.81 USGS 01591000 2015-06-27 21:00 2640 8.76 USGS 01591000 2016-07-30 22:15 3740 9.83 USGS 01591000 2017-07-29 02:45 848 5.57 USGS 01591000 2018-07-22 07:00 2510 8.60 USGS 01591000 2019-07-08 11:15 2070 8.01 USGS 01591000 2019-11-01 04:05 2960 9.12 USGS 01591000 2021-09-23 12:25 2290 8.54 USGS 01591000 2022-05-23 00:10 1390 6.84