UPPER TWIN LAKE NR BRIDGEPORT Water Level
Live lake level, flow, historical records and forecast for UPPER TWIN LAKE NR BRIDGEPORT in CA, United States, built from official government gauge data.
- Location CA, United States
- Watershed east walker
- Primary gauge 10290300 (USGS)
About UPPER TWIN LAKE NR BRIDGEPORT
Upper Twin Lake sits in the East Walker watershed in California.
The watershed
This station drains 29.5 sq mi (76.4 km2) upstream of the gauge. That area is what feeds the reading here, so it is the piece of the basin that matters for this page.
Upper Twin Lake is part of the East Walker system, and the nearby stations in that network show how closely the lakes, creeks, and river reaches are linked. For anyone watching the water for fishing, cabin access, or supply, this gauge tells you about conditions at this lake, not the watershed as a whole.
In this part of the Sierra, spring and early-summer peaks are common, winter atmospheric-river storms can bring the major floods, and long dry summers usually mean very low flows. That seasonal rhythm is the backdrop for the whole basin.
What the numbers say
The station facts here do not include a record high, a record low, a seasonal swing, or a fastest 24-hour rise, so I will not invent one.
What can be said from the station metadata is limited but useful: the gauge drains 29.5 sq mi (76.4 km2) upstream, which is a modest catchment for a mountain lake station. That means local weather can show up quickly in the reading, and lake levels can change faster than people expect after a storm or a run of dry weather.
Reading the hero number
The hero number on this page is the current reading compared with the median for this calendar day across the station record. That comparison is better than raw elevation because it tells you whether the lake is running high or low for the date, not just where it sits above sea level.
The station is published by the USGS. No years-on-record value is available in the facts for this page, so I cannot say how long the record runs.
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
