WHAT'S HAPPENING NOW
—— ft above typical
Finding the top signal on the water…
Live river level, flow, historical records and forecast for Hart Ditch at Dyer, in in IN, United States, built from official government gauge data.
Hart Ditch at Dyer, in is in the Chicago watershed in Indiana.
This USGS station watches the ditch above 37.6 sq mi (97.4 km2) of upstream area. That is the drainage feeding this gauge, not the whole Chicago watershed.
For people nearby, the record matters because the water has shown a wide range over time: the highest level on record was 14.66 ft (4.47 m) in September 2008, and the lowest was 1.93 ft (0.59 m) in September 2025. Those two marks bracket what this site has actually shown, so a bank, crossing, or intake that sits close to today’s level should be treated with that spread in mind.
The usual seasonal shape is fairly modest at this site. The highest typical month is March at 2.76 ft (0.84 m), and the lowest typical month is August at 2.1 ft (0.64 m). The typical annual swing is 7.9 in (20.1 cm).
That tells you the ditch generally runs a little higher in late winter and early spring, then lower by late summer. The spread is not huge in a typical year, but the record shows it can move well outside that band. I do not have a fastest 24-hour rise for this station in the facts provided.
The number shown on the page should be read against the median for this calendar day, not as a raw height on its own. That comparison answers a better question for a resident or angler: is the water higher or lower than it usually is on this date?
With more than 37 years on record at a USGS station, that day-of-year comparison is the clearest way to judge whether today sits near normal for Hart Ditch or well above it.
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.
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.
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.
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.
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.
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