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Streamflow Measurements for the Nation


USGS 11183670 WALNUT C A DIAMOND BLVD BRIDGE NR CONCORD CA


Contra Costa County, California
Hydrologic Unit Code 18050001
Latitude  37°58'10.39", Longitude 122°03'13.62" NAD83
Drainage area 85.3  square miles
Gage datum 33 feet above NAVD88
Output formats
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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
 
Channel
Number
Channel
Name
Meas.
type
 
Stream
flow
method
 
Velocity
method
 
Channel
flow
(ft3/s)
Channel
width
(ft)
Channel
area
(ft2)
Channel
vel.
(ft/s)
Channel
stability
 
Channel
material
 
Channel
evenness
 
Long.
vel.
desc.
 
Horz.
vel.
desc.
 
Vert.
vel.
desc.
 
Channel
loc.
code
 
Channel
loc.
dist.(ft)
52021-11-22 13:36:20PSTYesBDCYRUSGS6.598.930.000.50GoodClearNONE11WADEQSCMMVADV6.5926.013.50.49FIRMsiltEVENSTDYEVENSTNDDNST90.00
42021-11-09 09:21:22PSTYesBDCYRUSGS15311.28-0.100.50GoodVegetationLightNONE11WADEQSCMMVADV15350.51091.40SOFTGRVLEVENSTDYEVENSTNDDNST100.00
32021-11-04 12:16:33PDTYesBDCYRUSGS9.879.100.000.50GoodDebrisLightNONE11WADEQSCMMVADV9.8725.018.10.55SOFTSANDEVENSTDYEVENSTNDDNST90.00
22021-01-05 12:24:40PSTYesBDCUSGS23.69.38-0.030.60GoodDebrisHeavyNONE11WADEQSCMMVADV23.620.313.41.76FIRMGRVLEVENSTDYEVENUNKNDNST50.00
12020-12-29 15:47:18PSTYesLAC/CSS/TKNUSGS6.789.09 FairDebrisLightNONE11WADEQSCMMVADV6.7813.67.530.90FIRMGRVLEVENSTDYEVENSTNDDNST100.00