NB Rancocas C at Iron Works Park at Mount Holly NJ Water Level
Live river level, flow, historical records and forecast for NB Rancocas C at Iron Works Park at Mount Holly NJ in NJ, United States, built from official government gauge data.
- Location NJ, United States
- Watershed lower delaware
- Primary gauge 01467005 (USGS)
About NB Rancocas C at Iron Works Park at Mount Holly NJ
NB Rancocas C at Iron Works Park at Mount Holly NJ is a gauged river in the Lower Delaware watershed, New Jersey.
Season by season
The pattern here is modest on paper but useful on the ground. The typical annual swing is 6.1 in (15.6 cm), so day-to-day changes are usually small enough that a dock, crossing, or bank edge is not dealing with a huge range from season to season.
The usual high point comes in August at 9.4 ft (2.86 m). The usual low point comes in June at 8.88 ft (2.71 m). That is not the Mid-Atlantic storm story people may expect; for this reach, the calendar-day pattern is the part to watch. Late-summer conditions are the higher end of the normal range here, while early summer is the lower end.
Records and rises
The record high is 14.09 ft (4.3 m) in August 2011. For anyone using the channel edge, that is the kind of rise that tells you the river has reached well beyond its usual summer band.
The record low is 6.93 ft (2.11 m) in May 2008. That low water mark matters for access, for shallow margin habitat, and for any place where a small drop changes how far water reaches into side pockets or along the bank.
The station has 19 years of record, which is enough history to show both the regular seasonal range and the extremes this reach has already seen.
Reading the hero number
Today’s reading is best judged against the median for this calendar day at this station, not against raw elevation alone. A single level can look ordinary or unusual depending on the date; the median for the day shows where the river usually sits for this exact time of year.
This page is published from USGS data. The station drains 140 sq mi (363 km2) above the gauge, so the number reflects runoff from that upstream area at this point on the river, not the whole watershed.
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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Inside the freshet cycle that puts Manitoba shorelines at risk each year - and why 2026 broke the script.
The science of snow water equivalent and why it drives the season ahead.
What the numbers on the measuring stick actually tell you.
Why Central and South Texas rivers go from gravel beds to fifty-year records in an afternoon - including July 2026 on the Nueces.
One percent, every year, forever - unwrapping hydrology's most misunderstood phrase, and how it differs from our own percentiles.
How every number is computed - About the platform
