# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-12-22 10:32:47 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 01085500 CONTOOCOOK R BL HOPKINTON DAM AT W HOPKINTON, NH # # 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 01085500 1964-04-14 4180 6 6.59 USGS 01085500 1965-04-17 2140 6 4.54 USGS 01085500 1966-03-26 2600 6 5.31 USGS 01085500 1967-04-05 3820 6 6.67 USGS 01085500 1968-03-29 4470 6 7.27 2 1968-03-22 7.42 1 USGS 01085500 1969-04-24 5260 6 8.66 USGS 01085500 1970-02-13 4200 6 8.35 1 USGS 01085500 1971-04-15 3890 6 7.08 USGS 01085500 1972-04-21 5140 6 8.52 USGS 01085500 1973-04-06 4640 6 7.97 USGS 01085500 1973-12-24 5160 6 8.54 USGS 01085500 1975-04-05 3560 6 6.67 USGS 01085500 1976-04-03 3750 6 6.91 USGS 01085500 1977-03-17 6620 6 10.06 USGS 01085500 1977-10-19 3710 6 6.86 USGS 01085500 1979-03-29 4670 6 7.99 USGS 01085500 1980-03-24 4890 6 8.24 USGS 01085500 1981-03-02 4060 6 7.25 USGS 01085500 1982-04-21 4550 6 7.84 USGS 01085500 1983-03-24 4760 6 8.09 USGS 01085500 1984-04-10 4490 6 7.74 USGS 01085500 1985-03-15 2410 6 5.17 USGS 01085500 1986-03-21 4290 6 7.46 USGS 01085500 1987-04-08 7530 6 10.89 USGS 01085500 1988-03-31 3160 6 6.17 USGS 01085500 1989-05-04 3470 6 6.56 USGS 01085500 1990-03-22 4830 6 8.18 USGS 01085500 1991-03-06 3320 6 6.37 USGS 01085500 1991-11-25 3420 6 6.50 USGS 01085500 1993-04-21 5360 6 8.76 USGS 01085500 1994-04-08 4640 6 7.96 USGS 01085500 1994-12-26 4900 6 8.25 USGS 01085500 1996-04-19 5580 6 9.00 USGS 01085500 1996-10-24 4850 6 8.20 USGS 01085500 1998-03-12 5140 6 8.25 USGS 01085500 1999-09-18 4970 6 8.06 USGS 01085500 2000-04-25 4610 6 7.66 USGS 01085500 2001-04-25 5960 6 9.15 USGS 01085500 2002-05-14 3220 6 6.04 USGS 01085500 2003-04-02 6240 6 9.45 USGS 01085500 2004-04-04 5820 6 9.00 USGS 01085500 2005-04-06 6230 6 9.44 USGS 01085500 2005-10-20 5970 6 9.16 USGS 01085500 2007-04-30 5370 6 8.51 USGS 01085500 2008-04-14 4840 6 7.92 USGS 01085500 2009-04-08 4100 6 7.08 USGS 01085500 2010-03-28 6050 6 9.20 USGS 01085500 2011-03-17 5620 6 8.70 USGS 01085500 2011-12-09 4380 6 7.25 USGS 01085500 2014-04-03 5030 6 8.02 USGS 01085500 2014-12-11 4850 6 7.81 USGS 01085500 2016-02-26 16:30 4190 6 7.03 USGS 01085500 2017-04-12 18:00 4370 6 7.40 USGS 01085500 2017-11-01 22:15 5380 6 8.60 USGS 01085500 2018-11-11 18:45 4730 6 7.89 USGS 01085500 2019-12-16 01:15 4780 6 7.94 USGS 01085500 2021-07-21 5120 6 8.31 USGS 01085500 2022-02-24 10:15 4120 6 7.19 USGS 01085500 2022-12-26 10:15 4880 6 8.05 USGS 01085500 2024-04-14 15:15 4540 6 7.67