River Derwent at Mowthorpe Weir Head Water Level
Live river level, flow, historical records and forecast for River Derwent at Mowthorpe Weir Head in England, United Kingdom, built from official government gauge data.
- Location England, United Kingdom
- Primary gauge ea-L2711 (Environment Agency)
About River Derwent at Mowthorpe Weir Head
River Derwent at Mowthorpe Weir Head is a gauged river in England.
What the record shows
The station has 30 years on record. Its highest recorded level is 43.72 m (143.45 ft), reached in June 2007. Its lowest recorded level is 20.7 m (67.93 ft), reached in April 2022.
The seasonal pattern is tight but useful. The highest typical month is January at 41.59 m (136.43 ft), and the lowest typical month is September at 41.26 m (135.38 ft). The typical annual swing is 32.2 cm (12.7 in).
For someone living beside the river, that means the usual year is not one of large level changes, but the record still shows that the gauge can move far outside its typical band. A winter high above the rest of the year is worth noting for moorings, banks, and any low set access points.
The watershed
No watershed name is given for this station, so the record here is best read as a gauge-level view of this reach and its seasonal rhythm.
The seasonal note fits a temperate river: higher water is most likely in the cooler months, with lower water later in the summer and into early autumn. At this site, January is the typical high month and September the typical low month, so the river’s annual range is modest in ordinary years. That is the kind of pattern that matters for rowing clubs, anglers watching margins, and anyone drawing water from the bank.
Reading the hero number
The hero number on this page is the river’s current reading compared with the median for this calendar day across the station record. That is more useful than raw elevation because the same level can mean different things at different times of year.
A reading above the daily median suggests the river is running fuller than usual for this date; a reading below it suggests the opposite. For a station with 30 years on record, that comparison gives a quick sense of whether today sits inside the usual seasonal band or outside it.
The data source for this station is the Environment Agency.
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.
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