# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-11-30 14:28:04 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 01099500 CONCORD R BELOW R MEADOW BROOK, AT LOWELL, MA # # 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 01099500 1938-07-29 3790 5 8.11 USGS 01099500 1939-04-04 2380 5 7.07 USGS 01099500 1940-04-04 2570 5 7.20 USGS 01099500 1941-02-12 1180 5 5.98 USGS 01099500 1942-03-21 2320 5 6.91 USGS 01099500 1943-03-22 2020 5 6.74 USGS 01099500 1944-04-29 1330 5 6.28 USGS 01099500 1945-03-08 2320 5 7.06 USGS 01099500 1946-03-11 2600 5 7.36 USGS 01099500 1947-03-08 1660 5 6.55 USGS 01099500 1948-03-24 3200 5 7.94 USGS 01099500 1949-02-28 1320 5 6.22 USGS 01099500 1950-03-29 1710 5 6.59 USGS 01099500 1951-04-07 2070 5 6.92 USGS 01099500 1951-11-11 2290 5 7.10 USGS 01099500 1953-04-19 2860 5 7.68 USGS 01099500 1954-09-15 3340 5 8.05 USGS 01099500 1955-08-23 4540 5 8.97 USGS 01099500 1956-04-18 2970 5 7.71 USGS 01099500 1957-04-15 1620 5 6.49 USGS 01099500 1958-01-30 3120 5 7.89 USGS 01099500 1959-04-06 2050 5 7.01 USGS 01099500 1960-04-08 2510 5 7.41 USGS 01099500 1961-04-19 2320 5 7.25 USGS 01099500 1962-04-04 2820 5 7.66 USGS 01099500 1963-03-30 2960 5 7.77 USGS 01099500 1964-03-12 1590 5 6.56 USGS 01099500 1965-03-01 1140 5 6.05 USGS 01099500 1966-03-07 1130 5 6.09 USGS 01099500 1967-04-22 1700 5 6.83 USGS 01099500 1968-03-22 4800 5 9.16 USGS 01099500 1969-03-30 3050 5 7.84 USGS 01099500 1970-02-14 2960 5 7.77 USGS 01099500 1971-03-20 1970 5 6.94 USGS 01099500 1972-03-25 3460 5 8.14 USGS 01099500 1973-02-05 2260 5 7.20 USGS 01099500 1973-12-27 1730 5 6.70 USGS 01099500 1975-02-27 1770 5 6.74 USGS 01099500 1976-01-31 2190 5 7.13 2 1976-01-19 7.14 1 USGS 01099500 1977-03-26 2630 5 7.51 USGS 01099500 1978-03-31 3270 5 8.00 2 1978-01-31 8.56 1 USGS 01099500 1979-01-28 5410 5 9.60 USGS 01099500 1980-04-13 1980 5 6.94 USGS 01099500 1981-03-02 2330 5 7.26 USGS 01099500 1982-06-10 4390 5 8.85 USGS 01099500 1983-03-15 3500 2,5 USGS 01099500 1984-06-05 4010 5 8.56 USGS 01099500 1985-03-14 871 5 5.69 2 1985-01-16 5.75 1 USGS 01099500 1986-03-19 2560 5 7.45 USGS 01099500 1987-04-10 5120 5 9.60 USGS 01099500 1988-03-30 1370 5 6.40 USGS 01099500 1989-05-14 1600 5 6.65 USGS 01099500 1990-02-02 1740 5 6.79 USGS 01099500 1991-08-23 1560 5 6.61 USGS 01099500 1991-11-26 1390 5 6.34 USGS 01099500 1993-04-03 4060 5 8.88 USGS 01099500 1994-03-29 3360 5 8.25 USGS 01099500 1994-12-28 1540 5 6.51 USGS 01099500 1996-01-31 2940 5 7.85 USGS 01099500 1996-10-24 3290 5 8.18 USGS 01099500 1998-06-18 3060 5 7.96 USGS 01099500 1999-02-06 1930 5 6.90 USGS 01099500 2000-04-27 2830 5 7.88 USGS 01099500 2001-03-25 4150 5 8.96 USGS 01099500 2002-05-18 1380 5 6.33 USGS 01099500 2003-04-02 2440 5 7.43 USGS 01099500 2004-04-05 3060 5 7.96 USGS 01099500 2005-04-05 3460 5 8.34 USGS 01099500 2006-05-17 3720 5 8.16 USGS 01099500 2007-04-20 3610 5 8.48 USGS 01099500 2008-03-11 3260 5 8.15 USGS 01099500 2008-12-15 2860 5 7.77 USGS 01099500 2010-03-17 5840 5 9.74 USGS 01099500 2011-03-13 3150 5 7.97 USGS 01099500 2011-12-11 2090 5 7.06 USGS 01099500 2013-06-17 2650 5 7.56 USGS 01099500 2014-04-04 3100 5 7.93 USGS 01099500 2014-12-12 2160 5 7.12 USGS 01099500 2016-04-11 1330 5 6.28 USGS 01099500 2017-04-08 2920 5 7.79 USGS 01099500 2018-04-21 03:00 1940 5 6.91 USGS 01099500 2018-11-29 17:45 2620 5 7.54 USGS 01099500 2020-04-07 1700 5 6.67 USGS 01099500 2021-07-14 17:45 2410 5 7.36 USGS 01099500 2022-02-13 12:15 1830 5 6.80 USGS 01099500 2023-03-18 04:45 2220 5 7.18