# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-11-08 12:06:58 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 15300200 ROADHOUSE C NR ILIAMNA 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 15300200 1973-00-00 01:00 96.0 Bm 12.55 3,Bm USGS 15300200 1974-09-21 75.0 12.89 3 USGS 15300200 1975-07-13 152 12.91 3 USGS 15300200 1976-06-00 77.0 Bd 12.38 3,Bd USGS 15300200 1978-08-20 70.0 10.85 USGS 15300200 1979-05-00 50.0 4,Bd 13.02 1,Bd USGS 15300200 1980-08-00 280 Bd 12.38 Bd USGS 15300200 1981-06-00 240 Bd 12.14 Bd USGS 15300200 1982-06-07 150 11.53 USGS 15300200 1983-05-00 90.0 Bd 11.07 Bd USGS 15300200 2005-09-10 202 11.88 USGS 15300200 2006-08-19 169 11.53 2 2005-12-20 12.00 1 USGS 15300200 2006-10-11 114 10.85 2 2007-01-30 12.20 1 USGS 15300200 2007-10-06 122 11.00 2 2008-03-05 12.20 1 USGS 15300200 2008-10-15 121 10.99 USGS 15300200 2010-07-26 108 10.81 USGS 15300200 2011-08-04 97.0 10.66 2 2011-04-09 12.23 1 USGS 15300200 2012-09-20 223 12.09 USGS 15300200 2013-09-05 121 10.98 USGS 15300200 2013-10-18 143 11.24