Live lake level, flow, historical records and forecast for Guadalupe River at New Braunfels in TX, United States, built from official government gauge data.
Guadalupe River at New Braunfels sits in the Middle Guadalupe watershed, Texas.
The seasonal pattern is narrow. May is the typical high month at 9.76 ft (2.98 m), and August is the typical low month at 9.52 ft (2.9 m). That leaves a typical annual swing of 2.9 in (7.4 cm), which is small for a channel that can still move hard during rain.
For people watching a dock, pump, or bank access, that means the day-to-day background level changes little across the year, but storm-driven jumps can still arrive in hours in this part of Texas. Between those events, long low-flow stretches are part of the rhythm.
The record high is 27.55 ft (8.4 m) in July 2002. The record low is 8.96 ft (2.73 m) in August 2018.
Those two marks matter because they show the spread this station can see over time. The high water line is far above the usual seasonal band, so shore access and low crossings can change quickly when rainfall lands in the basin. The low record shows how far the river can fall during dry periods.
There is no fastest 24-hour rise listed here, so I won’t add a number that is not in the record.
The hero number on this page is best read against the median for the same calendar day in the USGS record, not against raw elevation by itself. That comparison tells you whether the river is sitting above or below its normal date-for-date level at this station.
This gauge has more than 28 years on record, so the daily median is grounded in a long local history. For a neighbour, that is the useful part: it puts today’s reading in context for access, irrigation, and flood watch without pretending that one number tells the whole story.
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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