# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-05-03 08:38:27 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 01584500 LITTLE GUNPOWDER FALLS AT LAUREL BROOK, 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 01584500 1926-11-16 7800 9.30 USGS 01584500 1928-06-14 8220 9.64 USGS 01584500 1929-02-26 1520 4.66 USGS 01584500 1929-10-22 3050 5.90 USGS 01584500 1931-07-20 1100 4.22 USGS 01584500 1932-03-28 2030 5.10 USGS 01584500 1933-08-23 9200 10.30 USGS 01584500 1934-09-17 5520 7.60 USGS 01584500 1935-07-10 1560 4.65 USGS 01584500 1936-03-11 2270 5.76 USGS 01584500 1937-08-11 4740 6.85 USGS 01584500 1937-11-13 2680 5.71 USGS 01584500 1939-04-26 2780 5.76 USGS 01584500 1940-05-20 3970 6.34 USGS 01584500 1941-06-23 1540 4.93 USGS 01584500 1942-07-11 1790 5.14 USGS 01584500 1943-05-21 2160 5.38 USGS 01584500 1943-11-09 4050 7.02 USGS 01584500 1945-07-19 4580 7.34 USGS 01584500 1946-07-23 1680 5.41 USGS 01584500 1947-06-07 2490 6.02 USGS 01584500 1948-05-30 2570 6.07 USGS 01584500 1949-07-13 1440 5.13 USGS 01584500 1950-09-11 2810 6.20 USGS 01584500 1951-07-04 3450 6.62 USGS 01584500 1952-09-01 5920 8.25 USGS 01584500 1952-11-21 2810 6.20 USGS 01584500 1954-03-01 755 4.13 USGS 01584500 1955-08-13 3400 6.57 USGS 01584500 1955-10-14 1860 5.56 USGS 01584500 1956-11-02 2470 5.99 USGS 01584500 1958-01-25 2780 6.18 USGS 01584500 1959-09-02 1400 5.10 USGS 01584500 1960-09-12 3260 6.48 USGS 01584500 1961-04-13 785 4.19 USGS 01584500 1962-02-26 1170 4.80 USGS 01584500 1963-03-06 1110 4.71 USGS 01584500 1964-01-09 976 4.51 USGS 01584500 1965-02-07 1680 5.40 USGS 01584500 1966-02-13 1860 5.56 USGS 01584500 1967-08-27 5130 7.72 USGS 01584500 1968-01-14 2360 5.92 USGS 01584500 1969-09-04 214 2.63 USGS 01584500 1970-07-10 3130 6.40 USGS 01584500 1971-08-01 3900 6.90 USGS 01584500 1972-06-22 9030 10.18 USGS 01584500 1973-07-03 4940 7.59 USGS 01584500 1975-07-13 6140 8.39 USGS 01584500 1976-09-16 6210 8.40 USGS 01584500 1977-06-28 2180 5.80 USGS 01584500 1978-01-26 8400 9.80 USGS 01584500 1979-09-06 7920 9.50 USGS 01584500 1980-06-07 3130 6.40 USGS 01584500 1981-00-00 1000 4,Bm 5.50 4,Bm USGS 01584500 1982-02-03 3450 6.60 USGS 01584500 1983-04-16 2840 6.22 USGS 01584500 1984-07-01 11800 11.40 USGS 01584500 1985-02-12 7460 9.21 USGS 01584500 1999-09-16 17:30 4480 7.30 USGS 01584500 2000-07-16 16:45 1440 5.13 USGS 01584500 2001-03-21 19:00 703 3.98 USGS 01584500 2002-03-20 16:45 181 2.44 USGS 01584500 2003-09-23 07:45 1950 5.59 USGS 01584500 2004-02-06 17:30 2450 5.97 USGS 01584500 2005-04-02 17:45 1090 4.66 USGS 01584500 2005-10-08 5280 8.19 USGS 01584500 2006-11-16 17:30 5230 7.79 USGS 01584500 2008-02-01 19:30 827 4.22 USGS 01584500 2009-09-11 17:15 1010 4.54 USGS 01584500 2010-09-30 3590 6.74 USGS 01584500 2011-09-07 20:15 5090 8.31 USGS 01584500 2012-06-01 19:30 1460 5.19 USGS 01584500 2012-10-29 20:00 2540 6.41 USGS 01584500 2014-04-30 20:30 5830 8.74 USGS 01584500 2015-06-27 19:30 1580 5.36 USGS 01584500 2016-02-24 20:30 3590 7.29 USGS 01584500 2017-04-06 17:45 951 4.44 USGS 01584500 2018-08-22 03:15 3040 6.85 USGS 01584500 2018-11-24 22:00 1980 5.84 USGS 01584500 2019-11-01 02:15 1660 5.46 USGS 01584500 2021-08-27 20:30 1440 5.17 USGS 01584500 2021-10-29 23:30 641 3.85