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Streamflow Measurements for the Nation


USGS 11182800 SAN RAMON C NR WALNUT CREEK CA


Contra Costa County, California
Hydrologic Unit Code 18050001
Latitude  37°52'38", Longitude 122°02'52" NAD27
Drainage area 47.9  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
 
4601992-10-01 11:25PDTYesKLS/KSWUSGS0.660.600.000.30PoorDebrisHeavyNONE
4591992-09-10 11:40PDTYesKLSUSGS1.010.68 PoorVegetationLightNONE
4581992-06-04 13:50PDTYesKLS/KLMUSGS1.990.730.001.00FairDebrisModerateNONE
4571992-04-28 09:35PDTYesKLS/JJGUSGS4.310.930.000.90FairDebrisModerateNONE
4561992-03-27 08:45PSTYesJJGUSGS7.521.000.000.70FairDebrisModerateNONE
4551992-01-24 09:20PSTYesJJGUSGS3.160.79-0.010.80FairDebrisModerateNONE
4541991-12-13 09:15PSTYesJJGUSGS1.920.720.000.60GoodClearNONE
4531991-10-10 15:15PDTYesJJGUSGS0.610.59-0.010.70PoorClearNONE
4521991-07-31 10:45PDTYesJJGUSGS1.080.680.000.70FairVegetationLightNONE
4511991-06-13 13:35PDTYesJJGUSGS1.580.730.010.70GoodVegetationLightNONE
4501991-03-28 09:40PSTYesJJGUSGS20.81.310.000.60GoodClearNONE
4491991-03-24 18:15PSTYesJCMUSGS3793.16-0.100.60Fair NONE
4481991-03-24 17:30PSTYesJCMUSGS4583.24-0.070.80Fair NONE
4471991-01-24 11:40PSTYesJJGUSGS1.850.720.000.70GoodVegetationLightNONE
4461990-12-13 10:55PSTYesJJGUSGS2.840.800.011.00FairVegetationLightNONE
4451990-10-25 13:45PDTYesJJGUSGS0.950.640.000.70GoodClearNONE
4441990-09-20 09:05PDTYesJJGUSGS1.240.680.000.70FairClearNONE
4431990-07-26 13:35PDTYesKLM/LAPUSGS0.920.65-0.010.40PoorVegetationLightNONE
4421990-06-07 09:20PDTYesJJGUSGS2.770.81-0.010.80FairVegetationLightNONE
4411990-06-04 13:00PDTYesJJGUSGS3.990.850.000.70GoodVegetationLightNONE
4401990-05-29 12:50PDTYesJJGUSGS6.250.99-0.010.80GoodVegetationLightNONE
4391990-04-19 09:20PDTYesJJGUSGS3.270.930.000.80FairVegetationLightNONE
4381990-03-14 13:30PSTYesJJGUSGS4.720.890.000.80GoodVegetationLightNONE
4371990-02-14 11:15PSTYesJJGUSGS3.940.840.000.70GoodVegetationLightNONE
4351990-01-10 13:50PSTYesJJGUSGS2.790.760.010.60FairVegetationLightNONE
4361990-01-10 13:00PSTYesJJGUSGS3.260.820.000.70FairVegetationLightNONE
4341989-10-26 09:15PDTYesJJGUSGS4.040.830.000.60FairClearNONE
4331989-09-15 09:20PDTYesJJGUSGS1.050.640.000.50Fair NONE
4321989-07-27 10:55PDTYesJJGUSGS0.950.660.000.60Poor NONE
4311989-06-15 -- ----YesJJGUSGS1.980.790.000.70Fair NONE
4301989-04-21 09:50PDTYesJJGUSGS6.610.920.000.70GoodDebrisLightNONE
4291989-03-16 11:25PSTYesJJGUSGS1242.17-0.180.50FairClearNONE
4281989-01-26 09:40PSTYesJJGUSGS3.700.820.000.70FairDebrisLightNONE
4271988-11-09 10:15PSTYesJJGUSGS1.220.65-0.010.70FairDebrisLightNONE
4261988-09-23 11:00PDTYesJJGUSGS0.640.59-0.020.70FairClearNONE
4251988-08-11 17:15PDTYesJJGUSGS0.730.61-0.020.50FairClearNONE
4241988-06-29 12:45PDTYesJJGUSGS1.360.690.000.70FairClearNONE
4231988-05-19 10:15PDTYesJJGUSGS3.910.860.000.70GoodClearNONE
4221988-03-31 10:45PSTYesJJGUSGS4.330.93-0.010.70FairClearNONE
4211988-02-25 14:30PSTYesJJGUSGS5.950.940.000.60GoodClearNONE
4201988-01-14 10:15PSTYesJJGUSGS7.360.990.000.60GoodClearNONE
4191987-12-04 08:45PSTYesJJGUSGS4.630.870.000.60GoodClearNONE
4181987-10-28 16:45PSTYesLAFUSGS7724.10-0.810.40FairDebrisHeavyNONE
4171987-10-28 16:15PSTYesLAFUSGS13204.89-0.960.40PoorDebrisHeavyNONE
4161987-10-08 13:30PDTYesjjgUSGS2.570.730.000.70GoodClearNONE