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Streamflow Measurements for the Nation

! Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

USGS 11267050 MERCED R A RANCHERIA FLAT NR EL PORTAL CA
Mariposa County, California
Hydrologic Unit Code 18040008
Latitude  37°40'10", Longitude 119°48'25" NAD27
Drainage area 393  square miles
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)
181997-10-03 07:55PDTYesJRSUSGS41.20.320.000.80PoorClearNONE1Imported Channel 1WADEunspeunkno41.270.088.40.47UNSPUNSPUNSPunknUNSPUNSPUNSP
171997-09-12 10:30PDTYesJRSUSGS74.00.620.000.70FairClearNONE1Imported Channel 1WADEunspeunkno74.070.01070.69UNSPUNSPUNSPunknUNSPUNSPUNSP
161997-08-01 08:19PDTYesJRSUSGS2541.760.001.00FairClearNONE1Imported Channel 1WADEunspeunkno25480.01731.47UNSPUNSPUNSPunknUNSPUNSPUNSP
151997-04-23 10:27PDTYesJRSUSGS32205.58-0.051.10FairClearNONE1Imported Channel 1CRANunspeunkno32201286624.86UNSPUNSPUNSPunknUNSPUNSPUNSP
141997-03-17 16:10PSTYesJRS/MWUSGS10303.53-0.021.10FairClearNONE1Imported Channel 1CRANunspeunkno10301093103.32UNSPUNSPUNSPunknUNSPUNSPUNSP