About this river
West Bayou Lacassine is a 2.3 mile river near Southern Salt Outdoors in Louisiana. Streamflow is measured at the USGS gauge Bayou Lacassine near Lake Arthur, LA (site 08012470). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1988 to 2025
West Bayou Lacassine typically runs highest in February, at a median 700 cfs, and lowest in October, at 102 cfs. The highest flow on record for any single day is 7,160 cfs, in 2003.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 457 | 140 to 1,290 | |
| February | 700 | 217 to 1,630 | |
| March | 356 | 70 to 869 | |
| April | 340 | 43 to 834 | |
| May | 246 | -113 to 859 | |
| June | 184 | -7.7 to 739 | |
| July | 442 | 93 to 793 | |
| August | 136 | -102 to 551 | |
| September | 198 | -83 to 789 | |
| October | 102 | -62 to 392 | |
| November | 113 | -108 to 989 | |
| December | 350 | -21 to 973 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 11 years of record. Statistics published by the US Geological Survey for Bayou Lacassine near Lake Arthur, LA (site 08012470). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show West Bayou Lacassine's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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