Check the river level before you go fishing

As a river rises, water can spread over more of the bank and reach grass, roots and fallen branches. As it falls, those areas can become shallow or dry again. That changes both the places fish can reach and the places you can fish from.

If you're fishing from shore, you need to know whether there's still somewhere to stand. If you're bringing a boat, you'll want to check the launch and the shallow areas you intend to use.

There is no universal stage for good fishing or usable access. A level can rise while fishing remains unknown, and a steady graph does not establish unchanged wind, local current or facilities. Use a relevant height record as context for the actual place and date, not a catch prediction or route instruction.

Open the USGS Louisiana water map. USGS is the U.S. Geological Survey, which operates river-measuring stations. Choose a station on the part of the river you'll be fishing. A station on a different river nearby won't tell you the level of yours.

For the Red River around Alexandria, the Red River at Alexandria station is a research starting point, not a measurement of every bank or launch nearby. Save its station name/identifier and link only after matching the location and measurement to your question. A similarly named or nearby station on other water is not interchangeable.

Look for “gage height” or “water level.” Gage is another spelling of gauge. You may also see stage, which means the water's height against a fixed reference at that station—like watching it move up or down a ruler.

An illustrative 10-foot stage is a height relative to the station’s reference zero, not a 10-foot-deep river. Keep the reference with its units; the zero is not the bottom. Compare the same measurement at the same station on a consistent reference, rather than subtract matching-looking heights from different stations.

Some pages also show discharge, meaning how much water is flowing past. For this first check, choose the graph showing water height.

Read the graph title/measurement and legend first, so a height line is not confused with discharge or a prediction if the source shows several series. Dates/times run along the bottom and height along the side. Retain the units, time zone, displayed time window and latest measured point. Look across several days, then the recent part:

• Observed height line going up: water height at that station is rising over that interval.
• Observed height line going down: water height at that station is falling over that interval.
• Observed height line fairly flat: the recorded height changes little over that interval; it does not establish still water or unchanged access.

Check the latest measurement time, not just when you opened the page or its displayed end date. A graph ending today can still contain an older last reading. Missing recent points leave a gap, not evidence the water stayed level.

Compare the actual values and elapsed time rather than the visual steepness alone: changing the displayed time or height scale can change how a slope looks. State which interval rose or fell. Water can be higher than last week and falling during the most recent readings without those descriptions conflicting. An observed series and a forecast, if present, answer different timing questions.

For an explicitly made-up example, a past visit’s note has the same station at 8 feet and records that a low bank was usable then. A new reading is 10 feet and rising over its recent interval. On a consistent reference and units, that is a two-foot rise at the station. It does not prove water at that bank rose by the same amount, measure its depth or establish whether the bank can be used now. Ask about that specific bank with the current site information.

Keep both the old observation/date and new measurement/time. A previous usable-bank note is evidence of that visit, not a permanent threshold. These figures are teaching values, not current readings, a recommended stage or a flood/access limit.

If the river has fallen, check the launch's current information before towing your boat there. For Red River facilities, Red River Waterway Commission recreation information is one place to start.

Use three labeled lines in the note:

• Station: name/identifier/link, height and units/reference, measurement time/time zone, graph interval and observed trend.
• Local observation: exact place/time and what you could see from a suitable permitted position, such as surface movement or clarity; do not turn appearance into measured speed or depth.
• Access answer: actual facility/position, manager/source and checked date, usable/closed/unresolved detail and the person following up.

For an illustrative note, ‘station 8 feet and falling over this interval; site manager reports this bank open; local water looks muddy’ keeps measurement, source answer and appearance separate. Add actual names/times before relying on it. Neither the station value nor the visual observation supplies the other two records.

For a first visit, establish actual access rather than borrow someone else’s preferred gauge number. If a new answer is unavailable, keep the site status unresolved and investigate a separately checked alternative; do not infer an open bank from an old screenshot. Revisit equipment, transport and return if the plan changes. The river-fishing guide connects the records with the outing.

Converting feet to another unit changes the unit, not the station’s reference or the meaning of stage. The measurements tool explains its non-negative input limit and why signed source values must not have their minus sign removed to fit a form.

USGS explains the gage-height measurement in more detail. Check weather and access information separately before leaving.