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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 11414170 DRUM CN A TUNNEL OUTLET NR EMIGRANT GAP CA
Nevada County, California
Hydrologic Unit Code 18020125
Latitude  39°19'03", Longitude 120°39'08" NAD27
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)
10222025-09-25 12:00PDTYesSMULREADYUSGS3995.890.001.33FairVegetationLightNONE1AABRDSQSCMMVPAA39921.61193.36FIRMLDGEEVENPULSEVENSTNDDNST20.00
10212025-07-24 09:57PDTYesSMULREADYUSGS5927.200.050.33FairVegetationLightNONE1Bridgeboard AAWADEQSCMMVPAA59222.41483.99UNSPUNSPUNSPUNSPEVENUNSPATGA0.00
10202024-09-10 11:07PDTYesSMULREADYUSGS4626.31 1.67FairVegetationLightNONE1AA w/bridgeboardBRDSQSCMMunkno46221.71293.59FIRMLDGEEVENPULSEVENSTNDDNST20.00
10192024-08-15 14:07:30PDTYesSMULREADY/TOUSGS441 FairVegetationLightNONE1AA curent meterBRDSQSCMMVPAA44121.81223.62FIRMLDGEEVENSTDYEVENSTNDDNST30.00
10182024-08-15 12:21:25PDTNo
10172023-06-29 14:24:26PDTYesPHONEYWE/MHUSGS3666.02 PoorClearNONE1mainCWAYQADCPVADCP36620.91242.96FIRMLDGEEVENSTDYUNSPUNSPATGA0.00
10162022-06-30 14:30:27PDTYesJNAWIKAUSGS5837.290.000.50FairClearNONE1mainBRDSQADCPVADCP58322.81613.62FIRMLDGEUNEVSTDYEVENSTNDUPST20.00
10152021-06-23 10:13PDTYesJNAWIKAUSGS3135.200.001.07FairVegetationLightNONE1mainBRUSQSCMMVPAA31321.01043.01FIRMLDGEEVENSTDYEVENNSTDATGA0.00
10142020-06-17 14:11PDTYesJMNUSGS5176.880.001.00FairVegetationLightNONE1mainBRUSQSCMMVPAA51722.01393.73FIRMLDGEEVENSTDYUNEVNSTDATGA0.00
10132019-06-18 12:14PDTYesJMNUSGS7088.110.011.20FairVegetationLightNONE1mainBRUSQSCMMVPAA70823.01684.20FIRMLDGEEVENSTDYEVENSTNDATGA0.00
10122018-09-12 12:50:46PDTYesJMNUSGS5127.500.030.68FairVegetationModerateNONE1mainBRDSQADCPVADCP51221.81633.15FIRMLDGEUNEVSTDYUNEVNSTDDNST30.00
10112018-06-18 12:43:42PDTYesJMNUSGS2505.280.000.50FairVegetationModerateNONE1mainBRDSQADCPVADCP25021.01132.22FIRMLDGEUNEVSTDYUNEVNSTDDNST30.00
10102017-06-16 13:08:04PDTYesJMN/HLMUSGS7708.380.000.40FairVegetationLightNONE1mainBRDSQADCPVADCP77023.81933.99FIRMLDGEEVENSTDYUNSPUNSPDNST5.00
10092016-06-06 11:59:15PDTYesHLMUSGS7038.270.000.20FairClearNONE1mainBRDSQADCPVADCP70322.01634.31FIRMLDGEEVENunknEVENNSTDDNST7.00
10082015-08-31 15:43PDTYesavmUSGS3045.25-0.011.00Fair NONE1canalWADEQSCMMVPAA30420.01022.98FIRMLDGEEVENunknUNSPNSTDATGA
10072015-06-03 11:43PDTYesavmUSGS2885.360.001.00Fair NONE1canalWADEQSCMMVPAA28821.01062.73FIRMLDGEEVENunknUNSPUNFMATGA
10062014-09-10 11:48PDTYesavm/hlmUSGS4206.110.001.00Fair NONE1main channelBRUSQSCMMVPAA42021.61233.41FIRMLDGEEVENunknUNSPSTNDATGA
10052014-06-18 11:31:09PDTYeskbUSGS342 5.55 Fair NONE1drum canalBRDSQADCPVADCP34222.41053.27FIRMLDGEEVENunknEVENSTNDATGA
10042013-08-26 11:41:52PDTYesHLMUSGS5346.760.000.30FairClearNONE1mainBRDSQADCPVADCP53425.91403.81FIRMLDGEEVENunknEVENUNFMDNST30.00
10032013-07-03 14:25:15PDTYesPHUSGS6647.990.000.20GoodClearNONE1mainBRDSQADCPVADCP66424.21683.94FIRMLDGEEVENunknEVENSTNDATGA
10022012-06-27 13:25PDTYesHLMUSGS5807.07-0.021.00GoodClearNONE1mainWADEQSCMMVPAA58022.01444.03FIRMLDGEEVENunknEVENNSTDATGA
10012011-09-14 10:20:30PDTYesJWJUSGS6868.040.000.60FairClearNONE1Drum Canal at Tunnel OutletBRDSQADCPVADCP68623.31684.09FIRMLDGEEVENunknEVENSTNDDNST10.00
10002011-07-19 09:29:30PDTYesJWJUSGS8038.700.000.80GoodClearNONE1Drum Canal at Tunnel OutletBRUSQSCMMVPAA80323.21844.36FIRMLDGEEVENunknEVENSTNDATGA