# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-12-12 08:15:29 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 01209700 NORWALK RIVER AT SOUTH WILTON, CT # # 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 01209700 1955-10-16 12000 2,7 13.50 USGS 01209700 1963-03-06 715 3.31 USGS 01209700 1964-01-25 715 3.30 USGS 01209700 1965-02-08 470 2.90 2 1965-02-08 1200 2.97 1 USGS 01209700 1966-03-01 350 2.67 USGS 01209700 1967-03-07 365 2.70 USGS 01209700 1968-05-29 1020 3.83 USGS 01209700 1969-03-25 1100 3.97 USGS 01209700 1970-04-02 1660 4.33 USGS 01209700 1971-09-14 1360 4.37 USGS 01209700 1972-06-19 1690 4.79 USGS 01209700 1973-02-03 1610 4.69 USGS 01209700 1973-12-21 1540 4.60 USGS 01209700 1975-09-27 1220 4.16 USGS 01209700 1976-01-28 1290 4.28 USGS 01209700 1977-03-22 1440 4.47 USGS 01209700 1978-01-26 1480 4.83 USGS 01209700 1979-01-21 1940 5.70 USGS 01209700 1980-04-10 2300 6.27 USGS 01209700 1981-02-20 560 3.06 USGS 01209700 1982-06-05 1400 4.43 USGS 01209700 1983-04-10 1480 4.53 USGS 01209700 1984-04-05 1690 4.59 USGS 01209700 1985-09-27 969 3.53 USGS 01209700 1986-01-26 962 3.52 USGS 01209700 1987-04-04 1710 5.25 USGS 01209700 1988-02-20 400 2.56 USGS 01209700 1989-05-16 1800 5.43 USGS 01209700 1989-10-20 1010 3.91 USGS 01209700 1990-10-24 1360 4.44 USGS 01209700 1992-08-18 612 3.27 USGS 01209700 1992-11-23 672 3.38 USGS 01209700 1994-01-28 1090 4.07 USGS 01209700 1995-01-20 313 2.58 USGS 01209700 1996-01-27 1510 4.64 USGS 01209700 1996-12-02 1400 4.50 USGS 01209700 1998-01-24 523 3.00 USGS 01209700 1999-09-17 1720 4.90 USGS 01209700 2000-06-07 495 3.01 USGS 01209700 2001-03-30 655 3.33 USGS 01209700 2002-05-14 556 3.14 USGS 01209700 2003-01-02 586 3.20 USGS 01209700 2004-09-18 1340 4.42 USGS 01209700 2005-04-03 892 3.75 USGS 01209700 2006-04-23 2340 6.44 USGS 01209700 2007-04-16 3490 8.37 USGS 01209700 2008-09-07 1320 4.52 USGS 01209700 2008-12-12 1230 4.35 USGS 01209700 2010-03-14 1830 5.88 USGS 01209700 2011-03-07 2440 6.97 USGS 01209700 2011-12-08 707 3.51 USGS 01209700 2013-03-12 618 3.27 USGS 01209700 2014-05-01 1280 4.83 USGS 01209700 2014-12-09 831 3.80 USGS 01209700 2016-02-16 477 2.93 USGS 01209700 2017-04-04 517 3.03 USGS 01209700 2018-04-16 17:45 1190 4.66 USGS 01209700 2019-01-24 18:15 1270 4.85 USGS 01209700 2020-04-13 21:45 1200 4.69 USGS 01209700 2021-09-02 03:15 1870 6.05 USGS 01209700 2021-10-26 22:30 1540 5.42