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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 300451091370300 Grand Bayou 7.3 miles ENE of Loreauville, LA
St. Martin Parish, Louisiana
Hydrologic Unit Code 08080101
Latitude  30°04'51", Longitude  91°37'03" NAD83
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)
232018-03-20 07:48:29CDTYesJGS/EPMUSGS2870 Poor NONE1MainMBOTQADCPVADCP287013122201.29SOFTsiltUNEVPULSUNEVSTNDUNSP
222017-04-18 06:50:09CDTYestd and emUSGS2410 Poor NONE1MainMBOTQADCPVADCP241015114901.62UNSPUNSPUNSPUNSPUNSPUNSPUNSP
212016-04-04 08:43CDTYestd and emUSGS3180 Poor NONE1MainMBOTQADCPVADCP318020622201.43UNSPUNSPUNSPUNSPUNSPUNSPUNSP
202015-03-31 10:31:23CDTYesTAD/EPMUSGS3180 Fair NONE1MAINMBOTQADCPVADCP318016321401.48UNSPUNSPUNSPunknUNSPUNSPUNSP
192014-05-20 09:32:41CDTYesTEB/CLJUSGS1500 Good NONE1MainMBOTQADCPVADCP150016013201.14SOFTsiltUNEVunknUNSPUNKNUNSP
182013-04-29 09:15:30CDTYesGTS/CLJUSGS2430 0.10Fair NONE1Imported Channel 1MBOTQADCPVADCP243016416601.46UNSPUNSPUNSPunknUNSPUNSPUNSP
172012-09-10 08:23CDTYesTAD/GTSUSGS4.20 0.10Good NONE1Imported Channel 1MBOTQADCPVADCP4.201366240.01UNSPUNSPUNSPunknUNSPUNSPUNSP
162011-06-01 14:21CDTYesSMP/ADUSGS3520 UnspecifiedUnspecifedNONE1Imported Channel 1UNSPother 3520 UNSPUNSPUNSPunknUNSPUNSPUNSP
152010-05-03 06:52CDTYestad/epmUSGS1050 Unspecified NONE1Imported Channel 1UNSPQADCPVADCP105015913200.79UNSPUNSPUNSPunknUNSPUNSPUNSP
142009-07-28 06:08CDTYesTAD/EPMUSGS373 UnspecifiedUnspecifedNONE1Imported Channel 1UNSPQADCPVADCP3731209160.41UNSPUNSPUNSPunknUNSPUNSPUNSP
132008-04-02 10:25CDTYesTAD/EPMUSGS4230 GoodClearNONE1Imported Channel 1UNSPQADCPVADCP423021624801.71UNSPUNSPUNSPunknUNSPUNSPUNSP
122008-02-27 09:26CSTYesTAD/EPMUSGS3400 FairClearNONE1Imported Channel 1UNSPQADCPVADCP340016920101.70UNSPUNSPUNSPunknUNSPUNSPUNSP
112007-04-30 09:25CDTYesclj/kjgUSGS2420 GoodClearNONE1Imported Channel 1UNSPQADCPVADCP242017916501.47UNSPUNSPUNSPunknUNSPUNSPUNSP
102007-03-21 06:10CDTYestad/epmUSGS1670 GoodClearNONE1Imported Channel 1UNSPQADCPVADCP167016414801.13UNSPUNSPUNSPunknUNSPUNSPUNSP
92007-01-29 07:33CSTYestad/epmUSGS3480 GoodClearNONE1Imported Channel 1UNSPQADCPVADCP348018521201.65UNSPUNSPUNSPunknUNSPUNSPUNSP
82006-05-24 09:46CDTYeswbs/gtsUSGS699 GoodClearNONE1Imported Channel 1UNSPQADCPVADCP69913811400.62UNSPUNSPUNSPunknUNSPUNSPUNSP
72006-03-28 09:01CSTYestad/epmUSGS2600 GoodClearNONE1Imported Channel 1UNSPQADCPVADCP260015414801.76UNSPUNSPUNSPunknUNSPUNSPUNSP
62005-04-13 10:11CDTYessmp/epmUSGS2940 GoodClearNONE1Imported Channel 1UNSPQADCPVADCP294016116701.76UNSPUNSPUNSPunknUNSPUNSPUNSP
52005-03-14 10:07CSTYessmp/gbrUSGS2110 GoodClearNONE1Imported Channel 1UNSPQADCPVADCP211016319601.08UNSPUNSPUNSPunknUNSPUNSPUNSP
42005-02-02 16:50CSTYessmp/gbrUSGS4870 GoodClearNONE1Imported Channel 1UNSPQADCPVADCP487014024002.03UNSPUNSPUNSPunknUNSPUNSPUNSP
32004-06-16 10:30CDTYessmp/jrfUSGS3620 GoodDebrisLightNONE1Imported Channel 1UNSPQADCPVADCP362018220901.73UNSPUNSPUNSPunknUNSPUNSPUNSP
22004-04-21 11:36CDTYesepm/tebUSGS1080 GoodDebrisLightNONE1Imported Channel 1UNSPQADCPVADCP108019012500.87UNSPUNSPUNSPunknUNSPUNSPUNSP
12004-03-17 10:25CSTYessmp/epmUSGS3590 GoodDebrisLightNONE1Imported Channel 1UNSPQADCPVADCP359017318701.92UNSPUNSPUNSPunknUNSPUNSPUNSP