# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-12-12 23:16:47 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 15275100 CHESTER C AT ARCTIC BOULEVARD AT ANCHORAGE 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 15275100 1967-09-04 87.0 C 2.52 2 1967-04-07 2.68 1 USGS 15275100 1968-05-30 85.0 C 2.43 2 1968-03-18 2.53 1 USGS 15275100 1969-07-24 80.0 C 2.76 2 1969-01-31 4.07 1 USGS 15275100 1970-08-10 89.0 C 2.88 USGS 15275100 1971-08-08 95.0 C 2.97 2 1971-02-03 4.25 1 USGS 15275100 1972-09-29 89.0 C 2.89 USGS 15275100 1972-10-11 69.0 C 2.59 2 1972-11-03 2.97 1 USGS 15275100 1974-09-23 80.0 C 2.76 USGS 15275100 1975-09-11 175 C 4.37 USGS 15275100 1976-09-21 93.0 C 3.53 USGS 15275100 1977-09-21 107 C 4.38 USGS 15275100 1978-06-14 103 C 4.32 USGS 15275100 1979-06-27 132 C 4.83 USGS 15275100 1980-08-16 114 C 4.18 USGS 15275100 1981-09-24 136 C 4.98 USGS 15275100 1982-09-03 136 C 4.95 USGS 15275100 1982-10-01 112 C 4.31 USGS 15275100 1984-08-25 140 C 5.11 USGS 15275100 1985-09-24 129 C 4.44 USGS 15275100 1987-10-02 116 C 4.20 USGS 15275100 1989-08-26 421 C 5.56 USGS 15275100 1990-09-22 192 C 4.04 USGS 15275100 1991-07-11 222 C 4.41 USGS 15275100 1992-09-06 168 C 3.71 USGS 15275100 1993-09-30 157 C 3.51 USGS 15275100 1999-08-12 187 C 3.67 USGS 15275100 2000-09-26 168 C 3.49 USGS 15275100 2001-07-05 116 C 2.97 USGS 15275100 2006-08-22 217 C 4.54 USGS 15275100 2007-09-08 179 C 3.60 2 2006-10-09 3.74 USGS 15275100 2008-09-17 142 C 3.70 USGS 15275100 2009-08-23 178 C 3.96 USGS 15275100 2010-08-28 167 C 3.88 USGS 15275100 2011-08-09 140 C 3.82 2 2011-01-23 4.76 1 USGS 15275100 2012-09-21 454 C 5.88 USGS 15275100 2012-10-06 288 C 5.16 2 2012-12-09 5.33 1 USGS 15275100 2013-10-28 209 C 4.43 2 2013-12-02 4.52 1 USGS 15275100 2015-09-29 253 C 4.76 USGS 15275100 2016-08-08 151 C 3.92 USGS 15275100 2017-08-13 210 C 4.46 USGS 15275100 2018-08-21 03:51 160 C 3.94 2 2018-02-06 2030 4.19 1 USGS 15275100 2019-09-20 17:23 187 C 3.89 USGS 15275100 2021-08-27 11:15 199 C 4.14 USGS 15275100 2022-08-17 22:45 230 C 4.28 USGS 15275100 2023-08-16 03:15 349 C 5.17