# # U.S. Geological Survey # National Water Information System # Retrieved: 2024-11-28 12:40:05 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 01646550 LITTLE FALLS BRANCH NEAR BETHESDA, MD # # 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 01646550 1945-07-31 2340 7.50 USGS 01646550 1946-05-28 1180 5.05 USGS 01646550 1947-04-30 840 3.94 USGS 01646550 1948-05-30 935 4.24 USGS 01646550 1948-11-06 760 3.77 USGS 01646550 1950-06-10 1510 5.63 USGS 01646550 1951-06-10 1100 4.57 USGS 01646550 1952-09-01 982 4.28 USGS 01646550 1953-05-16 854 3.96 USGS 01646550 1954-08-03 661 3.48 USGS 01646550 1955-08-22 1340 5.18 USGS 01646550 1955-10-14 742 3.68 USGS 01646550 1957-03-15 500 3.14 USGS 01646550 1958-07-22 1440 5.43 USGS 01646550 1959-08-08 1510 5.61 USGS 01646550 1960-08-04 2120 5.92 USGS 01646550 1961-08-26 900 3.94 USGS 01646550 1962-02-26 130 2.30 USGS 01646550 1963-08-21 750 3.70 USGS 01646550 1964-05-13 860 3.92 USGS 01646550 1965-07-18 1480 5.05 USGS 01646550 1966-09-14 2680 6.82 USGS 01646550 1967-08-24 1900 5.70 USGS 01646550 1968-09-02 915 4.03 USGS 01646550 1969-08-09 1620 5.29 USGS 01646550 1970-07-09 875 3.95 USGS 01646550 1971-07-29 750 3.70 USGS 01646550 1972-06-21 2540 6.62 USGS 01646550 1973-09-14 1190 4.57 USGS 01646550 1974-05-12 381 2.90 USGS 01646550 1975-09-26 2100 6.00 USGS 01646550 1976-04-01 335 2.79 USGS 01646550 1977-08-08 1190 4.56 USGS 01646550 1978-08-30 555 3.28 USGS 01646550 1979-09-05 993 4.19 USGS 01646550 1979-10-01 291 2.70 USGS 01646550 1981-08-31 204 2.50 USGS 01646550 1982-05-28 208 2.51 USGS 01646550 1982-12-16 208 2.51 USGS 01646550 1984-03-29 755 3.71