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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 08012400 Mermentau River @ Lake Arthur, LA
Jefferson Davis Parish, Louisiana
Hydrologic Unit Code 08080202
Latitude  30°04'22.2", Longitude  92°39'33.4" NAD83
Drainage area 1,723  square miles
Gage datum -22.37 feet above NAVD88
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
Reselect output format
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)
682024-10-24 08:52:46CDTYesDMH/AMSUSGS48022.520.000.11PoorClearNONE1ADCP-4MBOTQADCPVADCP480627110000.04UNSPUNSPUNSPUNSPEVENUNSPUPST200.00
672024-10-24 08:46:09CDTYesDMH/AMSUSGS44922.520.000.11PoorClearNONE1ADCP-3MBOTQADCPVADCP449626110000.04UNSPUNSPUNSPUNSPEVENUNSPUPST200.00
662024-10-24 08:39:42CDTYesDMH/AMSUSGS40522.520.000.10PoorClearNONE1ADCP-2MBOTQADCPVADCP405625110000.04UNSPUNSPUNSPUNSPEVENUNSPUPST200.00
652024-10-24 08:33:25CDTYesDMH/AMSUSGS57422.520.000.10PoorClearNONE1ADCP-1MBOTQADCPVADCP574598109000.05UNSPUNSPUNSPUNSPEVENUNSPUPST200.00
642024-08-20 09:28:59CDTYesSAT/AMSUSGS157022.450.000.10PoorClearNONE1MainMBOTQADCPVADCP1570659112000.14UNSPUNSPUNSPUNSPUNEVUNSPUPST350.00
632024-08-20 09:22:50CDTYesSAT/AMSUSGS129022.45-0.000.10PoorClearNONE1MainMBOTQADCPVADCP1290654112000.12UNSPUNSPUNSPUNSPUNEVUNSPUPST350.00
622024-08-20 09:16:38CDTYesSAT/AMSUSGS129022.450.000.10PoorClearNONE1MainMBOTQADCPVADCP1290667113000.11UNSPUNSPUNSPUNSPUNEVUNSPUPST350.00
612024-08-20 09:10:14CDTYesSAT/AMSUSGS153022.450.020.11FairClearNONE1MainMBOTQADCPVADCP1530663112000.14UNSPUNSPUNSPUNSPUNEVUNSPUPST350.00
602024-06-24 10:11:20CDTYesSAT/MGBUSGS280023.54-0.010.31PoorClearNONE1MainMBOTQADCPVADCP2800636118000.24UNSPUNSPUNSPUNSPUNEVUNSPUPST250.00
592024-04-03 09:27:24CDTYesSAT/MGBUSGS47122.71 PoorClearNONE1Main-6MBOTQADCPVADCP471655114000.04UNSPUNSPUNSPUNSPUNSPUNSPUNSP
582024-04-03 09:20:59CDTYesSAT/MGBUSGS38922.71 PoorClearNONE1Main-5MBOTQADCPVADCP389662115000.03UNSPUNSPUNSPUNSPUNSPUNSPUNSP
572024-04-03 09:14:36CDTYesSAT/MGBUSGS45222.72 PoorClearNONE1Main-4MBOTQADCPVADCP452645114000.04UNSPUNSPUNSPUNSPUNSPUNSPUNSP
562024-04-03 09:08:10CDTYesSAT/MGBUSGS50922.71 PoorClearNONE1Main-3MBOTQADCPVADCP509651113000.04UNSPUNSPUNSPUNSPUNSPUNSPUNSP
552024-04-03 09:01:38CDTYesSAT/MGBUSGS64422.71 PoorClearNONE1Main-2MBOTQADCPVADCP644646114000.06UNSPUNSPUNSPUNSPUNSPUNSPUNSP
542024-04-03 08:55:08CDTYesSAT/MGBUSGS74722.710.000.10PoorClearNONE1MainMBOTQADCPVADCP747647114000.07UNSPUNSPUNSPUNSPEVENUNSPDNST200.00
532024-02-02 09:35:34CSTYesSAT/MGBUSGS1230023.47 0.21FairClearNONE1MainMBOTQADCPVADCP12300659117001.05UNSPUNSPUNSPUNSPEVENUNSPUPST75.00
522023-12-05 08:46:52CSTYesSAT/RWTUSGS431022.88 0.32FairClearNONE1MainMBOTQADCPVADCP4310652114000.38UNSPUNSPUNSPUNSPEVENUNSPUPST150.00
512023-10-17 13:50:40CDTYesSAT/MGBUSGS-92521.59 PoorClearNONE1Main-8MBOTQADCPVADCP-92564110700-0.09UNSPUNSPUNSPUNSPUNSPUNSPUNSP
502023-10-17 13:42:50CDTYesSAT/MGBUSGS-67021.58 PoorClearNONE1Main-7MBOTQADCPVADCP-67063510700-0.06UNSPUNSPUNSPUNSPUNSPUNSPUNSP
492023-10-17 13:29:35CDTYesSAT/MGBUSGS-97321.58 PoorClearNONE1Main-6MBOTQADCPVADCP-97364110700-0.09UNSPUNSPUNSPUNSPUNSPUNSPUNSP
482023-10-17 13:22:32CDTYesSAT/MGBUSGS-77421.58 PoorClearNONE1Main-5MBOTQADCPVADCP-77464110700-0.07UNSPUNSPUNSPUNSPUNSPUNSPUNSP
472023-10-17 13:16:21CDTYesSAT/MGBUSGS-94921.58 PoorClearNONE1Main-4MBOTQADCPVADCP-94963610600-0.09UNSPUNSPUNSPUNSPUNSPUNSPUNSP
462023-10-17 13:09:31CDTYesSAT/MGBUSGS-83421.58 PoorClearNONE1Main-3MBOTQADCPVADCP-83463510600-0.08UNSPUNSPUNSPUNSPUNSPUNSPUNSP
452023-10-17 13:03:14CDTYesSAT/MGBUSGS-95921.58 PoorClearNONE1Main-2MBOTQADCPVADCP-95963210600-0.09UNSPUNSPUNSPUNSPUNSPUNSPUNSP
442023-10-17 12:57:03CDTYesSAT/MGBUSGS-86821.58 0.10PoorClearNONE1MainMBOTQADCPVADCP-86862310500-0.08UNSPUNSPUNSPUNSPEVENUNSPUPST50.00
432023-07-25 09:31:23CDTYesSAT/DMHUSGS44322.33 PoorClearNONE1Main-8MBOTQADCPVADCP443630112000.04UNSPUNSPUNSPUNSPUNSPUNSPUNSP
422023-07-25 09:24:58CDTYesSAT/DMHUSGS43522.33 PoorClearNONE1Main-7MBOTQADCPVADCP435634112000.04UNSPUNSPUNSPUNSPUNSPUNSPUNSP
412023-07-25 09:18:38CDTYesSAT/DMHUSGS26922.33 PoorClearNONE1Main-6MBOTQADCPVADCP269628112000.02UNSPUNSPUNSPUNSPUNSPUNSPUNSP
402023-07-25 09:12:10CDTYesSAT/DMHUSGS37322.33 PoorClearNONE1Main-5MBOTQADCPVADCP373630111000.03UNSPUNSPUNSPUNSPUNSPUNSPUNSP
392023-07-25 09:05:37CDTYesSAT/DMHUSGS62522.33 PoorClearNONE1Main-4MBOTQADCPVADCP625632112000.06UNSPUNSPUNSPUNSPUNSPUNSPUNSP
382023-07-25 08:59:01CDTYesSAT/DMHUSGS54022.32 PoorClearNONE1Main-3MBOTQADCPVADCP540636112000.05UNSPUNSPUNSPUNSPUNSPUNSPUNSP
372023-07-25 08:52:28CDTYesSAT/DMHUSGS81722.32 PoorClearNONE1Main-2MBOTQADCPVADCP817630112000.07UNSPUNSPUNSPUNSPUNSPUNSPUNSP
362023-07-25 08:46:11CDTYesSAT/DMHUSGS73222.33 0.10PoorClearNONE1MainMBOTQADCPVADCP732632111000.07UNSPUNSPUNSPUNSPUNEVUNSPUPST150.00
352023-07-19 10:11:34CDTYesSAT/KKCUSGS235022.43 PoorClearNONE1Main-11MBOTQADCPVADCP2350636112000.21UNSPUNSPUNSPUNSPUNSPUNSPUNSP
342023-07-19 10:05:29CDTYesSAT/KKCUSGS255022.42 PoorClearNONE1Main-10MBOTQADCPVADCP2550639112000.23UNSPUNSPUNSPUNSPUNSPUNSPUNSP
332023-07-19 09:59:25CDTYesSAT/KKCUSGS247022.42 PoorClearNONE1Main-9MBOTQADCPVADCP2470634111000.22UNSPUNSPUNSPUNSPUNSPUNSPUNSP
322023-07-19 09:53:22CDTYesSAT/KKCUSGS241022.43 PoorClearNONE1Main-8MBOTQADCPVADCP2410634111000.22UNSPUNSPUNSPUNSPUNSPUNSPUNSP
312023-07-19 09:47:21CDTYesSAT/KKCUSGS237022.43 PoorClearNONE1Main-7MBOTQADCPVADCP2370633111000.21UNSPUNSPUNSPUNSPUNSPUNSPUNSP
302023-07-19 09:41:22CDTYesSAT/KKCUSGS233022.44 PoorClearNONE1Main-6MBOTQADCPVADCP2330636112000.21UNSPUNSPUNSPUNSPUNSPUNSPUNSP
292023-07-19 09:35:28CDTYesSAT/KKCUSGS232022.44 PoorClearNONE1Main-5MBOTQADCPVADCP2320637112000.21UNSPUNSPUNSPUNSPUNSPUNSPUNSP
282023-07-19 09:27:44CDTYesSAT/KKCUSGS238022.43 PoorClearNONE1Main-4MBOTQADCPVADCP2380644112000.21UNSPUNSPUNSPUNSPUNSPUNSPUNSP
272023-07-19 09:20:43CDTYesSAT/KKCUSGS256022.43 PoorClearNONE1Main-3MBOTQADCPVADCP2560640112000.23UNSPUNSPUNSPUNSPUNSPUNSPUNSP
262023-07-19 09:14:48CDTYesSAT/KKCUSGS263022.43 PoorClearNONE1Main-2MBOTQADCPVADCP2630639112000.24UNSPUNSPUNSPUNSPUNSPUNSPUNSP
252023-07-19 09:08:43CDTYesSAT/KKCUSGS242022.44 0.10PoorClearNONE1MainMBOTQADCPVADCP2420642112000.22UNSPUNSPUNSPUNSPEVENUNSPUPST500.00
242023-05-23 08:40:13CDTYesSAT/DMHUSGS134022.74 PoorClearNONE1Main-5MBOTQADCPVADCP1340640115000.12UNSPUNSPUNSPUNSPUNSPUNSPUNSP
232023-05-23 08:33:36CDTYesSAT/DMHUSGS135022.75 PoorClearNONE1Main-4MBOTQADCPVADCP1350640114000.12UNSPUNSPUNSPUNSPUNSPUNSPUNSP
222023-05-23 08:26:54CDTYesSAT/DMHUSGS125022.76 PoorClearNONE1Main-3MBOTQADCPVADCP1250645115000.11UNSPUNSPUNSPUNSPUNSPUNSPUNSP
212023-05-23 08:20:10CDTYesSAT/DMHUSGS129022.76 FairClearNONE1Main-2MBOTQADCPVADCP1290650115000.11UNSPUNSPUNSPUNSPUNSPUNSPUNSP
202023-05-23 08:13:23CDTYesSAT/DMHUSGS156022.75 0.11PoorClearNONE1MainMBOTQADCPVADCP1560642114000.14UNSPUNSPUNSPUNSPEVENUNSPUPST120.00
192023-05-11 12:39:19CDTYesSAT/DMHUSGS30023.39 0.35PoorClearNONE1MainMBOTQADCPVADCP300651121000.02UNSPUNSPUNSPUNSPEVENUNSPUPST60.00
182023-04-11 11:35:53CDTYesJRFUSGS1610024.09 0.22GoodClearNONE1MainMBOTQADCPVADCP16100806126001.28UNSPUNSPUNSPUNSPEVENUNSPUPST250.00
172023-03-14 09:20:49CDTYesSAT/MMWUSGS141022.58 PoorClearNONE1Main-3MBOTQADCPVADCP1410681115000.12UNSPUNSPUNSPUNSPUNSPUNSPUNSP
162023-03-14 09:13:02CDTYesSAT/MMWUSGS141022.57 PoorClearNONE1Main-2MBOTQADCPVADCP1410693116000.12UNSPUNSPUNSPUNSPUNSPUNSPUNSP
152023-03-14 09:05:20CDTYesSAT/MMWUSGS134022.58 PoorClearNONE1MainMBOTQADCPVADCP1340685115000.12UNSPUNSPUNSPUNSPEVENUNSPUPST200.00
142023-01-17 10:40:08CSTYesSAT/MGBUSGS380023.26 PoorClearNONE1Main-8BRDSQADCPVADCP3800745122000.31UNSPUNSPUNSPUNSPUNSPUNSPUNSP
132023-01-17 10:33:05CSTYesSAT/MGBUSGS438023.26 PoorClearNONE1Main-7BRDSQADCPVADCP4380741121000.36UNSPUNSPUNSPUNSPUNSPUNSPUNSP
122023-01-17 10:21:15CSTYesSAT/MGBUSGS358023.26 PoorClearNONE1Main-6BRDSQADCPVADCP3580743121000.30UNSPUNSPUNSPUNSPUNSPUNSPUNSP
112023-01-17 10:14:10CSTYesSAT/MGBUSGS389023.26 PoorClearNONE1Main-5BRDSQADCPVADCP3890743121000.32UNSPUNSPUNSPUNSPUNSPUNSPUNSP
102023-01-17 10:07:12CSTYesSAT/MGBUSGS327023.27 PoorClearNONE1Main-4BRDSQADCPVADCP3270735121000.27UNSPUNSPUNSPUNSPUNSPUNSPUNSP
92023-01-17 10:00:13CSTYesSAT/MGBUSGS287023.27 PoorClearNONE1Main-3BRDSQADCPVADCP2870741122000.24UNSPUNSPUNSPUNSPUNSPUNSPUNSP
82023-01-17 09:53:14CSTYesSAT/MGBUSGS301023.27 PoorClearNONE1Main-2BRDSQADCPVADCP3010733120000.25UNSPUNSPUNSPUNSPUNSPUNSPUNSP
72023-01-17 09:46:01CSTYesSAT/MGBUSGS283023.27 0.12PoorClearNONE1MainBRDSQADCPVADCP2830738121000.24UNSPUNSPUNSPUNSPUNEVUNSPUPST75.00
62022-12-12 10:57:30CSTYesSAT/DMHUSGS482023.10 PoorClearNONE1Discharge-6MBOTQADCPVADCP4820658117000.41UNSPUNSPUNSPUNSPUNSPUNSPUNSP
52022-12-12 10:50:47CSTYesSAT/DMHUSGS478023.11 PoorClearNONE1Discharge-5MBOTQADCPVADCP4780661118000.41UNSPUNSPUNSPUNSPUNSPUNSPUNSP
42022-12-12 10:44:08CSTYesSAT/DMHUSGS465023.11 PoorClearNONE1Discharge-4MBOTQADCPVADCP4650661118000.40UNSPUNSPUNSPUNSPUNSPUNSPUNSP
32022-12-12 10:37:33CSTYesSAT/DMHUSGS458023.11 PoorClearNONE1Discharge-3MBOTQADCPVADCP4580660117000.39UNSPUNSPUNSPUNSPUNSPUNSPUNSP
22022-12-12 10:30:36CSTYesSAT/DMHUSGS453023.11 PoorClearNONE1Discharge-2MBOTQADCPVADCP4530651117000.39UNSPUNSPUNSPUNSPUNSPUNSPUNSP
12022-12-12 10:23:33CSTYesSAT/DMHUSGS456023.11 0.11PoorClearNONE1MainMBOTQADCPVADCP4560647117000.39UNSPUNSPUNSPUNSPEVENUNSPUPST75.00