St. Johns River at Astor Water Level
Live river level, flow, historical records and forecast for St. Johns River at Astor in FL, United States, built from official government gauge data.
- Location FL, United States
- Watershed upper st johns
- Primary gauge 02236125 (USGS)
About St. Johns River at Astor
The St. Johns River at Astor is in the Upper St. Johns watershed in Florida.
The watershed
The station drains 3,330 sq mi (8,625 km2) upstream of this point. For people living or fishing here, that upstream area is what the gauge is responding to, not the whole named watershed.
This is a river with a long record: 33 years on file. That matters because a single reading is easier to place when you can compare it with many seasons at the same spot.
What the numbers say
The record high is 4.78 ft (1.46 m), set in October 2024. The record low is -0.49 ft (-0.15 m), set in May 2004.
The seasonal pattern is not flat. October is the usual high month, with a typical level of 2.29 ft (0.7 m). May is the usual low month, with a typical level of 0.82 ft (0.25 m). The typical annual swing is 17.6 in (44.8 cm).
For a dock, that swing is the part to plan around. For an intake or a shallow launch, the month-to-month change is often more important than a single day’s level. The record high and record low show the outer edge of what this gauge has seen; the typical month values show what happens more often.
Reading the hero number
The number on the page should be read against the median for this calendar day across the station record, not as a raw elevation by itself. A water level only becomes useful when it is placed next to what is normal for the same day of year.
This station is reported by the USGS, and the record spans 33 years. That makes the daily median the better reference for everyday use: it tells you whether the river is running above or below its usual condition for this date, which is more practical than a single height on its own.
How this page is built
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.
How Nibi Metrics works · Water stories
Nibi Metrics - live water levels, flow, and forecasts for lakes and rivers across Canada, the US and the UK
Real-time water levels, forecasts, and alerts for lakes and rivers across Canada, the US and the UK. Built on official government data.
Nibi Metrics tracks more than 13,000 gauged lakes and rivers across Canada, the United States and the United Kingdom, reading directly from official federal monitoring networks: the Water Survey of Canada, the United States Geological Survey, Quebec's provincial hydrometric network, and the Environment Agency for England. 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.
What you can see for any monitored lake or river
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.
Alerts that watch the water for you
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.
Where Nibi comes from
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.
Coverage
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.
Free forever, funded by members
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.
Water Stories
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How every number is computed - About the platform
