N F South Branch Potomac River at Cabins Water Level

Live river level, flow, historical records and forecast for N F South Branch Potomac River at Cabins in WV, United States, built from official government gauge data.

About N F South Branch Potomac River at Cabins

The North Fork South Branch Potomac River at Cabins is in the South Branch Potomac watershed in West Virginia.

The watershed

This station sits on the North Fork South Branch Potomac River, with a catchment above the station of 310 sq mi (803 km2). For people watching water levels here, that upstream area is the part that feeds this gauge.

The record here runs for 48 years, which is enough to show a clear seasonal pattern. The highest typical month is March at 5.32 ft (1.62 m), and the lowest typical month is September at 3.93 ft (1.2 m). That is a typical annual swing of 16.7 in (42.5 cm), which is the range docks, intakes, and shallow crossings have to live with through the year.

What the numbers say

The record high is 10.17 ft (3.1 m) in March 2021. The record low is 3.64 ft (1.11 m) in September 2010. Those two marks show the spread this site can reach: a high-water season that can move well above the usual March level, and late-summer water that can sit near the low end of the record.

The seasonal shape fits the regional pattern of winter-spring rain and snowmelt driving higher water, with lower flows later in the warm season between storms. On a mountain tributary like this, that means changes can be quick after heavy rain, so water users should watch the gauge closely during wet periods.

Reading the hero number

The number shown on this page should be read against the median for this calendar day, not just the raw elevation. That comparison tells you whether the river is running high or low for the date, which is more useful than a single height by itself.

This station is run by the USGS, and it has more than 48 years on record.

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.

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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.

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