# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-11-30 21:00:44 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 Alaska 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 15200280 GULKANA R AT SOURDOUGH AK # # 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 15200280 1973-05-16 8840 9.92 2 1973-05-13 12.98 1 USGS 15200280 1974-05-25 6750 8.86 2 1974-05-07 9.97 1 USGS 15200280 1975-06-04 8110 9.66 USGS 15200280 1976-05-27 3850 7.32 2 1976-05-07 16.03 1 USGS 15200280 1977-06-02 9170 10.07 USGS 15200280 1978-05-09 7970 9.54 2 1978-05-06 10.01 1 USGS 15200280 1989-05-04 11500 10.88 2 1989-04-30 11.86 1 USGS 15200280 1990-09-12 12700 11.26 USGS 15200280 1991-05-24 6710 8.94 2 1991-05-05 11.53 1 USGS 15200280 1992-06-03 9420 10.08 USGS 15200280 1993-05-04 6170 8.69 2 1993-04-30 19.94 1 USGS 15200280 1997-06-10 7470 9.36 USGS 15200280 1998-08-10 3130 7.28 USGS 15200280 1999-05-17 5340 8.48 USGS 15200280 2000-06-08 4890 8.33 USGS 15200280 2001-05-25 5090 8.43 USGS 15200280 2002-08-22 7380 9.41 USGS 15200280 2002-10-03 4290 8.01 2 2003-04-29 11.12 1 USGS 15200280 2004-05-10 7600 9.50 USGS 15200280 2006-10-10 15300 2 12.00 USGS 15200280 2008-05-05 7000 1,2,9 2008-05-05 1300 11.85 1 USGS 15200280 2009-05-05 12000 1,2,9 14.64 1 USGS 15200280 2010-07-25 4480 8.41 USGS 15200280 2011-05-23 4920 8.63 USGS 15200280 2012-06-14 8130 10.29 USGS 15200280 2013-05-30 19300 9 14.62 2 2013-05-25 16.59 1 USGS 15200280 2014-05-04 7000 1,2,9 2014-05-04 1300 10.54 1 USGS 15200280 2015-05-11 6630 9 9.58 2 2015-05-11 1300 11.66 1 USGS 15200280 2016-07-26 4560 8.52 USGS 15200280 2017-05-02 4600 2,9 8.85 1 USGS 15200280 2018-06-13 06:30 9150 10.75 2 2018-05-11 1900 10.79 1 USGS 15200280 2019-05-09 08:45 4750 9 8.57 2 2019-05-04 1230 8.70 1 USGS 15200280 2020-06-24 22:00 7690 10.09 USGS 15200280 2021-05-31 16:30 6810 9 9.67 USGS 15200280 2022-05-29 10:00 13800 9 12.97 USGS 15200280 2023-05-21 05:15 11900 9 12.21