# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-12-01 00:47:09 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 01658000 MATTAWOMAN CREEK NEAR POMONKEY, 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 01658000 1950-09-11 1920 5.88 USGS 01658000 1950-12-05 425 4.41 USGS 01658000 1951-12-22 1380 5.55 USGS 01658000 1952-11-22 1100 5.30 USGS 01658000 1953-12-15 485 4.33 USGS 01658000 1955-08-13 9300 7.52 USGS 01658000 1955-10-14 2480 5.69 USGS 01658000 1956-11-01 568 4.34 USGS 01658000 1958-03-21 1300 5.04 USGS 01658000 1959-06-03 402 4.13 USGS 01658000 1960-09-13 2280 5.60 USGS 01658000 1961-02-19 1280 5.03 USGS 01658000 1962-03-13 948 4.88 USGS 01658000 1963-03-13 2030 5.48 USGS 01658000 1964-02-20 559 4.49 USGS 01658000 1965-03-06 763 4.73 USGS 01658000 1966-02-13 370 4.25 USGS 01658000 1966-10-20 466 4.42 USGS 01658000 1968-01-15 840 4.80 USGS 01658000 1969-02-25 204 3.50 USGS 01658000 1970-04-15 1440 5.17 USGS 01658000 1971-02-09 1110 4.99 USGS 01658000 1972-06-22 7350 7.10 USGS 01658000 1973-02-03 1000 4.92 USGS 01658000 1974-03-31 2320 5.63 USGS 01658000 1975-09-26 8700 7.40 USGS 01658000 1976-01-01 1510 5.21 USGS 01658000 1977-06-09 1170 5.02 USGS 01658000 1978-01-26 4300 6.31 USGS 01658000 1979-09-06 4900 6.48 USGS 01658000 1979-10-10 1450 5.18 USGS 01658000 1981-06-20 316 3.82 USGS 01658000 1982-05-31 4290 6.31 USGS 01658000 1983-04-16 2900 5.86 USGS 01658000 1984-03-29 2550 5.72 USGS 01658000 1985-09-28 892 4.84 USGS 01658000 1985-11-30 1590 5.25 USGS 01658000 2001-03-22 14:45 1270 6.08 USGS 01658000 2002-04-29 08:15 260 4.42 USGS 01658000 2003-02-23 16:00 2190 6.69 USGS 01658000 2004-02-07 18:30 1420 6.20 USGS 01658000 2005-01-15 08:00 1750 6.43 USGS 01658000 2006-06-26 06:45 2640 6.92 USGS 01658000 2006-11-17 06:15 3210 7.17 USGS 01658000 2008-05-12 14:45 2240 7.86 1 USGS 01658000 2009-06-06 12:45 513 5.62 USGS 01658000 2009-12-26 20:00 1130 6.90 USGS 01658000 2011-09-08 12:15 2400 7.98 USGS 01658000 2011-12-08 06:15 1400 7.20 USGS 01658000 2012-10-30 17:30 1110 6.88 USGS 01658000 2014-04-30 21:45 1540 7.28 USGS 01658000 2015-04-21 07:15 649 5.77 USGS 01658000 2016-02-25 05:45 704 5.89 USGS 01658000 2017-08-13 02:00 648 5.77 USGS 01658000 2018-02-12 01:00 3060 R 7.43 USGS 01658000 2018-10-12 10:23 3640 R 7.72 USGS 01658000 2020-08-04 23:30 3500 8.07 2 2020-08-05 0030 8.08 USGS 01658000 2020-11-12 22:00 2260 7.76 USGS 01658000 2022-05-08 06:00 638 USGS 01658000 2022-12-16 23:30 603 6.06