Live lake level, flow, historical records and forecast for Lcra Lake Lbj Near Marble Falls in TX, United States, built from official government gauge data.
Lake LBJ sits in the Buchanan-Lyndon B. Johnson Lakes watershed in Texas.
The station above the lake drains 36823 sq mi (95371 km2) upstream of this gauge. That is the land area that can send water to the reading here, not the full named watershed on a map.
For people on this water, the main pattern to watch is short-notice rise after rain. In flash-flood country, level changes can arrive in hours, so docks, lifts, and shallow access points need room to move fast. Between storms, long low-flow stretches are normal.
The record high is 824.91 ft (251.43 m) in June 2026.
The record low is 824.39 ft (251.28 m) in May 2026.
That spread is only 0.52 ft (0.15 m), so small changes matter here. A few tenths of a foot can be the difference between an easy launch, a tight dock fit, or a shallow edge that starts to pinch access. For anglers, those shifts can move shoreline water out from cover or put it back.
There is no seasonal summary in the facts for this page, so I will not add one.
The number at the top of the page is most useful when you compare today’s reading with the median for this calendar day, not with the raw elevation alone. A single level can look high or low in isolation and still be normal for this date.
This station is published by the USGS. It gives a local reference point for this lake, and the daily median shows where today sits against the station’s own record for this day. For a cottager, that helps judge dock clearance and shoreline access. For an angler, it helps separate an ordinary swing from something worth watching closely.
Readings come from official government gauges and are rolled into daily records: the daily mean, high and low for every day on record. Each calendar day gets its own baseline from the full history, so the level you see is compared against what this specific date usually looks like rather than an annual average.
Real-time water levels, forecasts, and alerts for lakes and rivers in a growing number of countries. Built on official government data.
Nibi Metrics tracks more than 17,900 gauged lakes and rivers in a growing number of countries, reading directly from official federal monitoring networks: the Water Survey of Canada, the United States Geological Survey, Quebec's provincial hydrometric network, the Environment Agency for England, the Scottish Environment Protection Agency, Natural Resources Wales, the Office of Public Works in Ireland (waterlevel.ie), the Norwegian Water Resources and Energy Directorate (NVE), the State of Queensland's water monitoring network, and on the Great Lakes the Canadian Hydrographic Service and NOAA. Every number on the platform is measured, not modelled - taken from a government gauge on the water itself and compared against that location's own historical record for this exact date.
The level right now, in feet or metres, updated as the source agency publishes new readings - for many stations that is every five to fifteen minutes. How today compares to typical: every location carries its own typical-for-this-date band built from its historical record, so a reading is never just a number - it is above, below, or near what this water usually does on this calendar day. Which way it is moving: a measured RISING, FALLING, or STEADY verdict computed from the gauge's own recent readings, with the rate of change - the difference between a flood ending and one beginning. What comes next: level forecasts up to 72 hours ahead, driven by the gauge's recent behaviour, upstream water, and quantitative precipitation forecasts, alongside live radar, lightning, and weather for the surrounding region.
Set a threshold on any location - a level, a distance above typical, or a rate of climb - and Nibi emails or notifies you the moment the gauge crosses it. Cottagers use it for spring freshet, anglers for river conditions, marinas and municipalities for operations. The scanning runs around the clock against the same measured data shown on every page.
Nibi means water in Anishinaabemowin. The platform began at a family cottage on Lake Muskoka, Ontario, where the spring melt floods the shoreline most years and the only forecast was standing on the dock, looking, and guessing. It grew into an independent, member-funded platform run by Muskoka Research Inc. - no investors, no data resale, and a privacy policy shorter than most cookie banners. The core data is free for everyone, forever; paid plans add automation like multi-location alerts, deep history, and reports.
Nibi spans the continent: every Canadian province and territory with active federal gauges - from Vancouver Island rivers to the Muskoka lakes, prairie reservoirs, and Quebec's hydrometric network - and the United States from Maine to the Texas Hill Country, the Ohio Valley, and the Pacific Northwest. Coverage grows where the water news is: when a basin floods, its gauges join the platform with their full historical records attached. Many stations report every five to fifteen minutes; most report at least hourly; every page states exactly when its gauge last spoke.
The core promise is simple: the water data is free, for everyone, forever. Live levels, maps, radar, and recent history never sit behind a paywall. Paid plans fund the platform by adding automation - multi-location alerts, decades of history, longer forecasts, and PDF reports - so the people who need more carry the cost for everyone who just needs to check the lake before driving up. There are no investors and no advertising deals shaping what the data says.
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