Oostanaula River at Calhoun Water Level
Live river level, flow, historical records and forecast for Oostanaula River at Calhoun in GA, United States, built from official government gauge data.
- Location GA, United States
- Watershed oostanaula
- Primary gauge 02387520 (USGS)
About Oostanaula River at Calhoun
Oostanaula River at Calhoun is a gauged river in the Oostanaula watershed, Georgia.
What the record shows
The record high is 33.79 ft (10.3 m), set in February 1990. The record low is 1.96 ft (0.6 m), set in October 2007. That span gives a sense of how far the river can move between a flood stage that will test banks and crossings and a low stage that can leave shallow reaches tighter for boats and fish movement.
The seasonal pattern is clear. The highest typical month is March at 8.11 ft (2.47 m), while the lowest typical month is October at 3.33 ft (1.01 m). The typical annual swing is 4.8 ft (1.46 m). For people watching a dock, intake, or shoreline access, that is the range to plan around each year.
The station has 40 years on record, so these patterns are based on a fairly long local history.
The watershed
This gauge drains 1624 sq mi (4206 km2) upstream of the station. In this part of Georgia, winter and spring rains usually carry the river, and warm-season flows often ease between storms. That means the same reach can look very different from one month to the next, with March tending higher and October tending lower.
For anglers, that seasonal drop can concentrate fish in narrower water. For landowners and cottagers, the spring rise is the time to watch banks, access points, and anything set low near the waterline.
Reading the hero number
The hero number on this page is today’s reading set against the median for this calendar day across the station’s record. That is more useful than raw elevation because a stage of, say, 8 ft (2.44 m) means something different in March than it does in October.
This gauge is published by the U.S. Geological Survey, and its record lets you compare today with more than 40 years of local stages.
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
