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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 11051500 SANTA ANA R NR MENTONE CA
San Bernardino County, California
Hydrologic Unit Code 18070203
Latitude  34°06'30", Longitude 117°05'59" NAD27
Drainage area 210  square miles
Gage datum 1,950 feet above NGVD29
Output formats
HTML table with channel data
HTML table without channel data
Tab-separated data with channel data
Tab-separated data without channel data
Graph of data
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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)
20741994-08-01 10:46PDTYesJMSUSGS0.326.050.000.30PoorClearNONE1Imported Channel 1WADEunspeunkno0.326.001.670.19UNSPUNSPUNSPunknUNSPUNSPUNSP
20731994-07-06 09:18PDTYesJMSUSGS1.796.130.000.40PoorClearNONE1Imported Channel 1WADEunspeunkno1.7923.07.090.25UNSPUNSPUNSPunknUNSPUNSPUNSP
20721994-06-02 10:17PDTYesJMSUSGS4.976.230.000.50PoorClearNONE1Imported Channel 1WADEunspeunkno4.9725.012.30.40UNSPUNSPUNSPunknUNSPUNSPUNSP
20711994-05-02 10:56PDTYesJMSUSGS7.726.260.000.40FairClearNONE1Imported Channel 1WADEunspeunkno7.7232.013.30.58UNSPUNSPUNSPunknUNSPUNSPUNSP
20701994-04-01 10:50PSTYesJMSUSGS10.26.330.000.50FairClearNONE1Imported Channel 1WADEunspeunkno10.225.515.00.68UNSPUNSPUNSPunknUNSPUNSPUNSP
20691994-03-01 10:28PSTYesJMSUSGS9.816.33 FairClearNONE1Imported Channel 1WADEunspeunkno9.8127.016.30.60UNSPUNSPUNSPunknUNSPUNSPUNSP
20681994-02-08 11:52PSTYesJMSUSGS2477.46-0.040.60FairClearNONE1Imported Channel 1WADEunspeunkno24755.092.42.67UNSPUNSPUNSPunknUNSPUNSPUNSP
20671994-01-31 11:00PSTYesJMSUSGS8.106.290.000.50FairClearNONE1Imported Channel 1WADEunspeunkno8.1027.013.90.58UNSPUNSPUNSPunknUNSPUNSPUNSP
20661994-01-03 10:55PSTYesJMSUSGS7.606.280.000.40FairClearNONE1Imported Channel 1WADEunspeunkno7.6026.013.60.56UNSPUNSPUNSPunknUNSPUNSPUNSP
20651993-11-30 10:03PSTYesJMSUSGS8.076.300.000.40FairClearNONE1Imported Channel 1WADEunspeunkno8.0727.013.91.72UNSPUNSPUNSPunknUNSPUNSPUNSP
20641993-11-02 11:30PSTYesJMSUSGS7.686.280.000.40FairClearNONE1Imported Channel 1WADEunspeunkno7.6826.014.40.53UNSPUNSPUNSPunknUNSPUNSPUNSP
20631993-10-13 10:02PDTYesJMSUSGS6.895.880.000.50FairClearNONE1Imported Channel 1WADEunspeunkno6.8920.013.00.53UNSPUNSPUNSPunknUNSPUNSPUNSP
20621993-08-31 14:20PDTYesJMSUSGS16.46.060.000.40PoorClearNONE1Imported Channel 1WADEunspeunkno16.421.017.40.94UNSPUNSPUNSPunknUNSPUNSPUNSP
20611993-07-29 10:28PDTYesJMSUSGS39.36.290.000.40PoorClearNONE1Imported Channel 1WADEunspeunkno39.334.035.51.11UNSPUNSPUNSPunknUNSPUNSPUNSP
20601993-06-30 08:50PDTYesJMSUSGS90.96.630.000.50PoorClearNONE1Imported Channel 1WADEunspeunkno90.940.048.61.85UNSPUNSPUNSPunknUNSPUNSPUNSP
20591993-06-01 11:47PDTYesJMSUSGS1056.740.000.50PoorClearNONE1Imported Channel 1WADEunspeunkno10543.354.91.91UNSPUNSPUNSPunknUNSPUNSPUNSP
20581993-01-19 09:30PSTYesJMS/JRSUSGS12208.360.010.50PoorClearNONE1Imported Channel 1CRANunspeunkno12201071866.56UNSPUNSPUNSPunknUNSPUNSPUNSP
20571993-01-18 08:45PSTYesJMS/JRSUSGS17309.06-0.010.40PoorClearNONE1Imported Channel 1CRANunspeunkno17301102177.98UNSPUNSPUNSPunknUNSPUNSPUNSP
20561993-01-17 15:32PSTYesJMS/JRSUSGS20409.120.060.70PoorClearNONE1Imported Channel 1CRANunspeunkno20402003156.49UNSPUNSPUNSPunknUNSPUNSPUNSP
20551992-12-30 14:57PSTYesJMSUSGS82.66.850.000.30FairClearNONE1Imported Channel 1WADEunspeunkno82.636.036.72.25UNSPUNSPUNSPunknUNSPUNSPUNSP
20541992-11-02 12:05PSTYesJMS/ABUSGS35.66.550.000.60PoorClearNONE1Imported Channel 1WADEunspeunkno35.642.035.11.02UNSPUNSPUNSPunknUNSPUNSPUNSP
20531992-08-03 -- ----YesJMSUSGS0.626.05 PoorClearNONE1Imported Channel 1WADEunspeunkno0.625.001.510.41UNSPUNSPUNSPunknUNSPUNSPUNSP
20521992-07-01 -- ----YesJMSUSGS14.96.42 FairClearNONE1Imported Channel 1WADEunspeunkno14.925.014.61.02UNSPUNSPUNSPunknUNSPUNSPUNSP
20511992-06-03 -- ----YesJMSUSGS1.186.10 PoorClearNONE1Imported Channel 1WADEunspeunkno1.186.401.850.64UNSPUNSPUNSPunknUNSPUNSPUNSP
20501992-04-01 -- ----YesJMSUSGS43.86.63 Good NONE1Imported Channel 1WADEunspeunkno43.831.020.12.18UNSPUNSPUNSPunknUNSPUNSPUNSP
20491992-03-30 -- ----YesJMSUSGS41.66.60-0.010.40Fair NONE1Imported Channel 1WADEunspeunkno41.631.019.52.13UNSPUNSPUNSPunknUNSPUNSPUNSP
20481992-02-28 -- ----YesDKUSGS4.916.27 Fair NONE1Imported Channel 1WADEunspeunkno4.918.603.471.41UNSPUNSPUNSPunknUNSPUNSPUNSP
20471992-02-14 -- ----YesJMSUSGS1217.070.010.40Fair NONE1Imported Channel 1WADEunspeunkno12134.038.93.12UNSPUNSPUNSPunknUNSPUNSPUNSP
20461992-02-03 -- ----YesKOGUSGS15.66.40 Good NONE1Imported Channel 1WADEunspeunkno15.615.69.601.62UNSPUNSPUNSPunknUNSPUNSPUNSP
20451991-12-02 -- ----YesDKUSGS0.155.92 Good NONE1Imported Channel 1OTHRQFLUM 0.15 UNSPUNSPUNSPunknUNSPUNSPUNSP
20441991-11-01 -- ----YesDKUSGS2.226.15 Fair NONE1Imported Channel 1WADEunspeunkno2.225.202.920.76UNSPUNSPUNSPunknUNSPUNSPUNSP
20431991-09-03 11:15PDTYesDSKUSGS0.125.930.000.10FairClearNONE1Imported Channel 1OTHRQFLUM 0.12 UNSPUNSPUNSPunknUNSPUNSPUNSP
20421991-08-01 11:40PDTYesDSKUSGS0.025.830.000.00FairClearNONE1Imported Channel 1OTHRQFLUM 0.02 UNSPUNSPUNSPunknUNSPUNSPUNSP
20411991-06-24 13:00PDTYesDSKUSGS0.025.890.000.10PoorClearNONE1Imported Channel 1OTHRQFLUM 0.02 UNSPUNSPUNSPunknUNSPUNSPUNSP
20401991-06-03 12:10PDTYesDSKUSGS0.675.920.000.30PoorClearNONE1Imported Channel 1WADEunspeunkno0.672.100.471.43UNSPUNSPUNSPunknUNSPUNSPUNSP
20391991-05-02 10:45PDTYesDSKUSGS2.806.170.000.50UnspecifiedClearNONE1Imported Channel 1WADEunspeunkno2.806.002.201.27UNSPUNSPUNSPunknUNSPUNSPUNSP
20381991-03-27 10:17PSTYesNKNUSGS61.66.970.000.30PoorClearNONE1Imported Channel 1WADEunspeunkno61.633.026.92.29UNSPUNSPUNSPunknUNSPUNSPUNSP
20371991-03-18 15:23PSTYesNKNUSGS5.876.260.000.40Poor NONE1Imported Channel 1WADEunspeunkno5.8713.63.921.50UNSPUNSPUNSPunknUNSPUNSPUNSP
20361991-03-06 10:13PSTYesNKNUSGS39.66.840.000.40PoorClearNONE1Imported Channel 1WADEunspeunkno39.638.033.81.17UNSPUNSPUNSPunknUNSPUNSPUNSP
20351991-03-04 10:24PSTYesNKNUSGS41.66.830.000.50PoorClearNONE1Imported Channel 1WADEunspeunkno41.638.028.21.48UNSPUNSPUNSPunknUNSPUNSPUNSP
20341991-02-28 09:17PSTYesNKNUSGS1196.900.000.80PoorClearNONE1Imported Channel 1WADEunspeunkno11937.038.33.11UNSPUNSPUNSPunknUNSPUNSPUNSP
20331991-02-01 11:57PSTYesNKNUSGS7.586.280.000.80PoorClearNONE1Imported Channel 1WADEunspeunkno7.589.006.771.12UNSPUNSPUNSPunknUNSPUNSPUNSP
20321990-02-18 -- ----YesMWUSGS27.66.54-0.010.50FairClearNONE1Imported Channel 1WADEunspeunkno27.627.515.21.82UNSPUNSPUNSPunknUNSPUNSPUNSP
20311989-06-27 16:00PDTYesNKNUSGS0.075.930.00 PoorClearNONE1Imported Channel 1WADEunspeunkno0.071.200.180.40UNSPUNSPUNSPunknUNSPUNSPUNSP
20301989-05-30 14:06PDTYesNKNUSGS0.336.070.000.30PoorClearNONE1Imported Channel 1WADEunspeunkno0.332.000.580.57UNSPUNSPUNSPunknUNSPUNSPUNSP
20291989-05-01 14:37PDTYesNKNUSGS0.426.110.000.10PoorClearNONE1Imported Channel 1WADEunspeunkno0.422.000.550.76UNSPUNSPUNSPunknUNSPUNSPUNSP
20281989-03-28 12:35PSTYesNKNUSGS5.386.230.000.90PoorClearNONE1Imported Channel 1WADEunspeunkno5.3811.94.411.22UNSPUNSPUNSPunknUNSPUNSPUNSP
20271989-03-06 10:15PSTYesNKNUSGS3.806.22-0.010.60PoorClearNONE1Imported Channel 1WADEunspeunkno3.8011.23.960.96UNSPUNSPUNSPunknUNSPUNSPUNSP
20261989-02-09 10:52PSTYesNKNUSGS32.86.540.000.90PoorClearNONE1Imported Channel 1WADEunspeunkno32.817.012.22.69UNSPUNSPUNSPunknUNSPUNSPUNSP
20251989-02-01 11:08PSTYesNKNUSGS0.616.06-0.010.10PoorClearNONE1Imported Channel 1WADEunspeunkno0.611.950.501.23UNSPUNSPUNSPunknUNSPUNSPUNSP
20241988-12-30 13:48PSTYesNKNUSGS29.76.570.020.50PoorClearNONE1Imported Channel 1WADEunspeunkno29.733.039.90.74UNSPUNSPUNSPunknUNSPUNSPUNSP
20231988-12-22 10:50PSTYesNKNUSGS25.06.580.000.60PoorClearNONE1Imported Channel 1WADEunspeunkno25.034.033.00.76UNSPUNSPUNSPunknUNSPUNSPUNSP
20221988-12-21 10:00PSTYesNKNUSGS84.76.91-0.070.30PoorClearNONE1Imported Channel 1WADEunspeunkno84.729.042.32.00UNSPUNSPUNSPunknUNSPUNSPUNSP