# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-06-13 18:55:39 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 01477800 SHELLPOT CREEK AT WILMINGTON, DE # # 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 01477800 1945-08-01 8.50 USGS 01477800 1946-05-18 1340 4.90 USGS 01477800 1947-05-01 2140 6.52 USGS 01477800 1947-11-04 1440 5.13 USGS 01477800 1948-12-30 715 3.63 USGS 01477800 1950-08-03 565 3.35 USGS 01477800 1950-11-25 1290 4.80 USGS 01477800 1952-07-09 4080 8.60 1940 USGS 01477800 1953-07-23 785 3.83 USGS 01477800 1953-12-14 830 3.92 USGS 01477800 1955-08-18 2280 6.73 USGS 01477800 1956-07-21 1330 4.92 USGS 01477800 1956-11-02 1000 4.27 USGS 01477800 1958-04-06 1140 4.55 USGS 01477800 1959-06-02 1540 5.34 USGS 01477800 1960-09-12 1930 6.12 USGS 01477800 1961-04-13 1210 4.68 USGS 01477800 1962-03-12 730 3.72 USGS 01477800 1963-08-01 560 3.37 USGS 01477800 1964-01-09 1020 4.31 USGS 01477800 1965-07-11 990 4.24 USGS 01477800 1966-02-13 695 3.65 USGS 01477800 1967-08-27 4650 9.10 USGS 01477800 1967-12-03 1220 4.71 USGS 01477800 1969-09-03 1080 4.42 USGS 01477800 1970-08-01 1970 6.20 USGS 01477800 1971-09-13 6850 11.91 USGS 01477800 1972-06-22 2240 6.66 USGS 01477800 1973-06-29 2030 6.31 USGS 01477800 1974-08-23 3300 8.00 USGS 01477800 1975-03-19 1390 5.08 USGS 01477800 1976-07-11 1050 4.48 USGS 01477800 1977-03-22 1670 5.66 USGS 01477800 1978-08-28 2210 6.63 USGS 01477800 1979-09-30 2020 6.30 USGS 01477800 1979-11-26 1200 4.74 USGS 01477800 1981-08-08 1500 5.31 USGS 01477800 1982-04-03 1180 4.70 USGS 01477800 1983-03-21 2020 6.03 USGS 01477800 1984-07-07 2040 6.05 USGS 01477800 1985-07-31 4390 8.87 USGS 01477800 1986-01-25 1010 4.43 USGS 01477800 1987-09-13 1940 5.91 USGS 01477800 1988-02-12 1210 4.79 USGS 01477800 1989-07-05 8040 13.76 USGS 01477800 1990-08-06 2140 6.20 USGS 01477800 1991-08-09 2490 6.67 USGS 01477800 1992-07-31 1230 4.75 USGS 01477800 1993-05-31 1700 5.58 USGS 01477800 1994-07-26 3830 8.26 USGS 01477800 1995-01-20 1330 4.93 USGS 01477800 1996-01-19 1890 5.85 USGS 01477800 1997-06-13 1720 5.60 USGS 01477800 1998-01-23 15:55 1530 5.29 USGS 01477800 1999-09-16 15:10 4460 8.95 USGS 01477800 2000-06-28 19:50 2230 6.32 USGS 01477800 2001-06-16 17:15 1340 4.95 USGS 01477800 2002-06-24 21:40 660 3.75 USGS 01477800 2003-06-20 17:55 4270 8.75 USGS 01477800 2004-07-12 15:35 4260 8.74 USGS 01477800 2005-04-02 16:50 2120 6.17 USGS 01477800 2006-06-03 00:10 3620 8.02 USGS 01477800 2007-04-15 14:40 1610 5.44 USGS 01477800 2008-03-08 14:20 1630 5.46 USGS 01477800 2009-06-20 18:25 1790 5.70 USGS 01477800 2010-07-14 15:30 3100 7.43 USGS 01477800 2010-10-01 03:35 5760 R 10.37 USGS 01477800 2011-12-23 02:00 727 R 4.54 USGS 01477800 2013-08-13 09:00 1540 R 6.43 USGS 01477800 2014-04-30 18:05 2120 R 7.86 1 USGS 01477800 2015-04-20 08:45 1610 6.55 USGS 01477800 2016-05-30 04:05 1090 5.52 USGS 01477800 2017-07-24 03:40 1490 6.33 USGS 01477800 2018-08-13 08:30 1620 6.57 USGS 01477800 2018-11-24 21:25 1280 5.93 USGS 01477800 2020-08-07 19:35 4050 9.02 USGS 01477800 2020-11-11 19:25 1890 6.86 USGS 01477800 2022-01-17 02:05 986 5.27