Lower Atchafalaya River At Morgan City flow report
As of July 12, 2026, Lower Atchafalaya River At Morgan City is flowing at 154,000 cfs with a gage height of 3.84 ft, rising 8% over the past 24 hours. Source: USGS gauge #07381600, refreshed throughout the day.
Historical Data
Lower Atchafalaya River At Morgan City at a glance
How Lower Atchafalaya River At Morgan City is running right now, where it sits on the map, and the key gauge stats.
Lower Atchafalaya River At Morgan City is flowing at 154,000 cfs, with the water sitting 3.84 ft at the gage. Flow is up 8% since yesterday — a rising hydrograph.
This is USGS gauge #07381600 in Louisiana. Over the past 10 days the average has been 148,200 cfs, peaking at 163,000 cfs.
Over the next 5 days, Lower Atchafalaya River At Morgan City is expected to recede from today's 154000 cfs, toward roughly 133137 cfs by 2026-07-17 (likely range 71267-248717 cfs) -- drier than normal for the date.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Louisiana flow report.
Streamflow Forecast
Powered by PULSE — Snoflo’s Predictive Unified Learning & Simulation Engine, which learns from how this river has answered every past storm, snowmelt, and dry spell to forecast where it’s headed with a precision generic models can’t match.
How does this compare to past years?
Year-over-year overlay, annual peak discharge, the full distribution of daily flows on record, and the gauge's rating curve.
Weather Forecast
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
Lower Atchafalaya River At Morgan City
This river is fed by several tributaries, including the Red River and the Mississippi River. There are no major dams along this stretch of the river. The flow of water in the river is influenced by seasonal trends, with high water levels typically occurring in the spring due to snowmelt and heavy rainfall. In the summer, the water levels tend to be lower. An interesting fact about this river is that it is home to a diverse range of wildlife, including alligators, turtles, and freshwater fish.
Nearby streamflow levels
Cross-check Lower Atchafalaya River At Morgan City's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Lower Atchafalaya River At Morgan City | 154,000 cfs |
| Bayou Boeuf At Railroad Bridge At Amelia | 4,150 cfs |
| Wax Lake Outlet At Calumet | 143,000 cfs |
| Giww At Bayou Sale Ridge Near Franklin | 8,250 cfs |
| Charenton Drainage Canal At Baldwin | 7,760 cfs |
| Bayou Lafourche At Thibodaux | 643 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Lower Atchafalaya River At Morgan City. Spring snowmelt is the dominant driver of streamflow in mountain basins -- a deep snowpack upstream means more runoff later in the season.
| SNOTEL station | Snowpack |
|---|---|
| Houma 4.4 Nnw | 0 in |
| St Amant 3.3 N | 0 in |
| St. Martinville 0.2 S | 0 in |
| New Iberia 6.1 Wnw | 0 in |
River levels & flood safety
- Read the level before you go
- A river that's runnable at one flow can be deadly at another. Check current discharge and gage height — like the values shown above — against the flood-stage thresholds, and remember levels can spike fast after rain or a dam release.
- Respect cold water
- Snowmelt rivers run cold even in summer. Sudden immersion triggers cold-water shock and saps strength within minutes. Wear a PFD, dress for the water temperature (not the air), and never wade or paddle alone.
- Watch for swiftwater hazards
- Strainers (downed trees), undercut rocks, and low-head dams are the deadliest features on moving water. High, fast, muddy water hides them. If in doubt, scout from shore and portage.
- Mind flash floods & releases
- Narrow canyons can flood from a storm miles upstream, and dam-controlled reaches can rise without warning. Know the forecast, the release schedule, and your exit before you launch.
Track Lower Atchafalaya River At Morgan City in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Lower Atchafalaya River At Morgan City crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Lower Atchafalaya River At Morgan City
Where does the streamflow data for Lower Atchafalaya River At Morgan City come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 07381600. Snoflo refreshes the time series throughout the day. Forecasts come from the NOAA / yr.no feed Snoflo's iOS app uses.
How often is the report updated?
USGS gauges report continuously (typically every 15 minutes). Snoflo pulls fresh values throughout the day — look for the "as of" timestamp on the streamflow hero card.
What's the difference between discharge and gage height?
Discharge (cubic feet per second, or cfs) is the volume of water flowing past the gauge each second. Gage height is how high the water sits at the gauge (feet). They're related by a rating curve specific to each gauge — higher water means more flow, but the exact ratio depends on channel shape.
How is "percent of median" calculated?
Today's discharge is compared to the historical median discharge on this calendar day across the gauge's full record. 100% = right on median; 200% = a very high year; 30% = a drought-level low.
What are flood stages, and is this river safe right now?
Flood stages are NWS-defined gage-height thresholds — Action, Minor, Moderate, Major — marking when nearby roads or floodplains start to be affected. "Safe" depends on your activity and skill: a level that's a fun paddle for an expert can be lethal for a wader. Always check the current level against the thresholds above and the safety links, and when in doubt, stay off the water.
Can I get alerts when Lower Atchafalaya River At Morgan City rises?
Yes — flow alerts are managed in the Snoflo iOS app. Favorite this gauge, set a streamflow threshold (e.g. "alert me when discharge crosses 5,000 cfs"), and you'll get a push the moment USGS reports the crossing.
Access the free Lower Atchafalaya River At Morgan City report
Create your free account to track this river — and everything else you love on the water.
- Flow alerts — get pinged the moment this river hits your range
- Save favorites — every river, lake & snowpack in one place
- Full history & forecasts — plus the free iPhone app