# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-11-28 14:45:37 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 01493000 UNICORN BRANCH NEAR MILLINGTON, 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 01493000 1948-02-14 310 8 USGS 01493000 1948-12-31 277 4.62 USGS 01493000 1950-03-23 222 4.08 USGS 01493000 1951-07-20 282 4.12 2 1951-05-12 4.52 1 USGS 01493000 1952-04-28 383 4.41 USGS 01493000 1953-06-19 253 3.92 USGS 01493000 1953-12-14 157 3.32 USGS 01493000 1955-08-13 359 4.30 USGS 01493000 1956-03-15 167 3.30 USGS 01493000 1956-11-02 630 5.49 USGS 01493000 1958-02-28 370 4.50 USGS 01493000 1959-01-02 116 2.92 USGS 01493000 1960-09-12 1060 7.17 USGS 01493000 1961-06-15 429 4.62 USGS 01493000 1962-03-13 246 3.88 USGS 01493000 1963-07-17 840 3 6.34 USGS 01493000 1964-02-19 226 3.76 USGS 01493000 1965-03-06 106 3.05 USGS 01493000 1966-09-22 85.0 2.87 USGS 01493000 1967-08-04 582 5.34 USGS 01493000 1968-03-18 266 4.05 USGS 01493000 1969-07-28 430 4.70 USGS 01493000 1969-12-27 296 4.13 USGS 01493000 1971-08-28 524 5.18 USGS 01493000 1972-06-22 1020 7.03 USGS 01493000 1973-02-03 467 4.99 USGS 01493000 1974-06-03 168 3.67 USGS 01493000 1975-07-15 365 4.60 USGS 01493000 1976-01-01 332 4.48 USGS 01493000 1977-03-23 108 3.29 USGS 01493000 1978-01-26 482 5.04 USGS 01493000 1979-02-26 697 5.83 USGS 01493000 1980-04-10 366 4.75 USGS 01493000 1981-05-12 61.0 2.79 USGS 01493000 1982-04-28 178 3.84 USGS 01493000 1983-06-21 825 5.51 USGS 01493000 1983-12-13 382 4.43 USGS 01493000 1985-09-27 351 4.33 USGS 01493000 1985-10-03 193 3.58 USGS 01493000 1986-12-25 220 3.74 USGS 01493000 1988-02-13 182 3.51 USGS 01493000 1989-05-02 397 4.38 USGS 01493000 1990-05-30 403 4.40 USGS 01493000 1991-01-12 224 3.66 USGS 01493000 1992-03-27 175 3.29 USGS 01493000 1993-03-18 434 4.51 USGS 01493000 1994-03-28 649 5.14 USGS 01493000 1995-03-09 204 3.78 USGS 01493000 1996-06-19 1090 5.98 USGS 01493000 1996-12-14 1160 6.09 USGS 01493000 1998-03-21 16:15 510 4.80 USGS 01493000 1999-09-16 19:30 2600 9.40 USGS 01493000 2000-03-22 07:00 498 4.77 USGS 01493000 2001-06-17 18:30 649 5.14 USGS 01493000 2002-05-03 03:30 94.0 2.82 USGS 01493000 2003-06-22 08:15 775 5.41 USGS 01493000 2004-06-17 03:30 731 5.32 USGS 01493000 2005-04-03 05:45 495 4.76 USGS 01493000 2007-04-16 04:30 736 6.23 USGS 01493000 2008-05-12 21:15 641 5.12 USGS 01493000 2009-08-23 11:45 172 3.58 USGS 01493000 2010-03-14 01:15 964 5.72 USGS 01493000 2011-08-28 11:45 1330 7.68 USGS 01493000 2011-12-08 07:15 517 5.44 USGS 01493000 2012-10-30 05:15 652 5.94 USGS 01493000 2014-05-01 06:00 528 5.36 USGS 01493000 2015-01-19 04:30 295 4.50 USGS 01493000 2016-02-25 12:30 342 4.68 USGS 01493000 2017-03-15 02:00 235 4.20 USGS 01493000 2018-02-11 20:45 600 5.43 USGS 01493000 2018-10-12 15:00 537 5.19 USGS 01493000 2020-08-08 06:15 908 6.28 USGS 01493000 2020-12-25 11:15 643 5.55 USGS 01493000 2022-04-06 21:45 322 4.37 USGS 01493000 2023-04-29 18:00 302 4.27