# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-05-03 16:00:05 EDT # # ---------------------------------- 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 06471500 ELM RIVER AT WESTPORT,SD # # 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 06471500 1946-01-08 200 7.30 1 USGS 06471500 1947-04-14 2100 11.45 USGS 06471500 1948-03-29 2870 12.51 USGS 06471500 1949-04-02 840 8.20 2 1949-03-12 8.25 1 USGS 06471500 1950-05-11 1870 10.79 2 1950-04-06 11.74 1 USGS 06471500 1951-04-02 550 9.40 1 USGS 06471500 1952-04-08 7520 20.10 USGS 06471500 1953-06-20 1420 10.00 USGS 06471500 1954-06-14 1560 10.50 USGS 06471500 1955-07-16 453 5 7.08 2 1955-03-19 7.62 1 USGS 06471500 1956-04-15 111 5 5.56 2 1956-03-22 5.57 1 USGS 06471500 1957-09-03 89.0 5 5.54 USGS 06471500 1958-03-04 1060 5 9.20 USGS 06471500 1959-07-15 39.0 5 4.95 USGS 06471500 1960-04-09 1170 5 8.88 2 1960-03-29 11.26 1 USGS 06471500 1961-03-28 34.0 5 4.89 USGS 06471500 1962-07-10 2670 5 12.85 2 1962-03-31 13.56 1 USGS 06471500 1963-06-09 348 5 6.78 USGS 06471500 1964-06-22 2660 5 13.09 USGS 06471500 1965-04-09 845 5 9.82 1 USGS 06471500 1966-03-17 5020 5 17.40 USGS 06471500 1967-05-05 542 5 7.15 USGS 06471500 1968-05-18 126 5 5.65 USGS 06471500 1969-04-10 12600 5 22.11 USGS 06471500 1970-04-29 91.0 5 5.46 USGS 06471500 1971-07-04 254 5 6.35 USGS 06471500 1972-03-19 4000 5 15.86 1 USGS 06471500 1973-07-01 24.0 5 4.77 2 1973-03-26 4.79 1 USGS 06471500 1974-03-11 138 5 5.79 USGS 06471500 1975-06-23 3950 5 14.79 USGS 06471500 1976-03-23 472 5 7.04 USGS 06471500 1977-03-17 67.0 5 4.96 USGS 06471500 1978-03-28 3700 5 17.20 2 1978-03-27 17.25 1 USGS 06471500 1979-04-21 3350 5 13.95 USGS 06471500 1980-03-30 35.0 5 USGS 06471500 1981-07-20 122 5 5.53 USGS 06471500 1982-04-03 4300 5 16.24 1 USGS 06471500 1983-03-10 1050 5 9.31 1 USGS 06471500 1984-03-29 1650 5 11.94 1 USGS 06471500 1985-03-21 75.0 5 5.12 USGS 06471500 1986-04-30 1520 5 9.94 USGS 06471500 1987-03-24 3450 5 13.87 USGS 06471500 1988-05-16 39.0 5 4.61 USGS 06471500 1989-03-28 3300 2,5 15.02 1 USGS 06471500 1990-08-26 25.0 5 4.50 USGS 06471500 1991-06-28 238 5 6.06 USGS 06471500 1992-09-06 59.0 5 4.98 USGS 06471500 1993-07-22 923 5 8.91 USGS 06471500 1994-03-22 3290 5 13.62 2 1994-03-18 15.75 1 USGS 06471500 1995-03-16 5000 5 17.71 1 USGS 06471500 1996-03-17 3100 5 15.40 1 USGS 06471500 1997-03-30 9380 5 21.56 1 USGS 06471500 1998-06-27 497 5 6.99 USGS 06471500 1999-05-14 3670 5 15.82 USGS 06471500 2000-03-26 456 5 6.91 USGS 06471500 2001-04-11 2460 5 13.17 USGS 06471500 2002-08-18 18.0 5 4.74 2 2002-05-11 4.78 1 USGS 06471500 2003-05-23 158 5 5.60 USGS 06471500 2004-04-01 319 5 6.32 USGS 06471500 2005-06-11 4670 5 17.78 USGS 06471500 2006-04-07 137 5 5.40 USGS 06471500 2007-03-19 1000 5 10.61 1 USGS 06471500 2008-08-13 151 5 5.53 USGS 06471500 2009-03-25 11900 5 22.63 USGS 06471500 2010-03-21 7180 5 19.68 2 2010-03-17 20.06 1 USGS 06471500 2011-04-06 5310 5 17.44 2 2011-06-24 17.47 1 USGS 06471500 2012-05-06 97.0 5 5.24 USGS 06471500 2013-04-29 177 5 5.66 USGS 06471500 2014-06-23 850 5 8.18 USGS 06471500 2015-05-21 1690 5 10.55 USGS 06471500 2016-08-14 1220 5 9.34 USGS 06471500 2017-02-23 2300 5 12.48 1 USGS 06471500 2018-04-22 22:45 2680 5 13.20 2 2018-04-23 0130 13.21 USGS 06471500 2019-04-04 13:00 7200 2,5 20.80 1,2 2019-04-03 1630 20.91 1 USGS 06471500 2020-07-27 01:15 7260 5 20.45 1 USGS 06471500 2021-08-28 21:30 60.7 5 5.03 2 2021-09-28 1245 5.28 1 USGS 06471500 2022-05-04 14:45 3320 5 14.39 USGS 06471500 2023-04-19 16:45 4570 2,5 16.75 1