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Streamflow Measurements for the Nation


USGS 372744122253201 ARROYO LEON A HALF MOON BAY CA


San Mateo County, California
Hydrologic Unit Code 18050006
Latitude  37°27'44", Longitude 122°25'32" NAD27
Drainage area 8.52  square miles
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Meas.
Number
  Date       Time Time
Datum
Measurement
Used?
  Who Measuring
Agency
Stream
flow
(ft3/s)
Gage
Height
(ft)
GH
Change
(ft)
Meas.
Duration
(hr)
Meas.
Rated
  Control Flow
Adjust.
Code
 
311993-04-26 17:40PDTYesGMKUSGS0.03 GoodClearNONE
301993-03-18 09:09PSTYesCTPUSGS6.37 0.000.70GoodDebrisHeavyNONE
291993-02-23 07:59PSTYesCTPUSGS58.6 -0.050.90GoodDebrisHeavyNONE
281993-01-19 14:36PSTYesCTPUSGS37.8 0.000.50GoodDebrisHeavyNONE
271992-12-14 15:05PSTYesCTPUSGS0.86 0.000.50FairDebrisHeavyNONE
261992-11-18 16:45PSTYesCTPUSGS0.03 0.000.30ExcellentDebrisLightNONE
251992-04-15 09:32PDTYesCTPUSGS0.08 0.000.30ExcellentClearNONE
241992-03-10 16:15PSTYesCTPUSGS7.91 0.000.60GoodDebrisHeavyNONE
231992-02-14 12:45PSTYesJJGUSGS1122.500.400.50PoorDebrisModerateNONE
221992-01-15 09:05PSTYesCTPUSGS0.76 0.000.60FairClearNONE
211991-12-10 08:30PSTYesCTPUSGS0.07 0.000.60GoodDebrisLightNONE
201991-05-15 07:55PDTYesCTPUSGS0.38 0.000.70FairClearNONE
191991-04-17 11:30PDTYesCTPUSGS0.06 0.000.30PoorClearNONE
181991-03-29 14:55PSTYesLFTUSGS13.2 0.000.50GoodClearNONE
171991-02-14 11:20PSTYesWWAUSGS0.24 GoodClearNONE
161991-01-17 10:30PSTYesWWAUSGS0.13 0.000.10ExcellentDebrisLightNONE
151990-12-19 14:00PSTYesWWAUSGS0.34 0.000.30GoodClearNONE
141990-06-13 18:30PDTYesWWAUSGS0.06 0.000.10GoodDebrisLightNONE
131990-04-26 16:00PDTYesWWAUSGS0.89 0.000.20FairClearNONE
12E1990-03-22 13:00PSTYesKLMUSGS0.01 UnspecifiedClearNONE
111990-02-01 13:50PSTYesKLM/JJGUSGS1.22 0.000.40GoodClearNONE
101989-12-20 14:55PSTYesKLMUSGS1.08 0.000.30Good NONE
91989-11-15 13:05PSTYesERHUSGS1.51 0.000.50FairClearNONE
81989-04-11 13:05PDTYesCTPUSGS0.16 0.000.30FairClearNONE
71989-03-23 08:15PSTYesCTPUSGS10.4 0.000.50FairClearNONE
61989-02-16 10:10PSTYesCTPUSGS1.38 0.000.50FairDebrisLightNONE
51989-01-18 11:10PSTYesCTPUSGS0.80 0.000.50FairClearNONE
41988-12-15 10:05PSTYesCTPUSGS0.02 0.000.10GoodClearNONE
31988-02-19 11:15PSTYesWWA/ERHUSGS0.56 0.000.20FairClearNONE
21988-01-06 09:40PSTYesWWAUSGS2.26 0.000.40GoodClearNONE
11987-12-08 14:30PSTYesWWAUSGS4.53 0.000.50GoodClearNONE