Rio Culebrinas at Margarita Damsite near Aguada Water Level
Live river level, flow, historical records and forecast for Rio Culebrinas at Margarita Damsite near Aguada in PR, United States, built from official government gauge data.
- Location PR, United States
- Watershed culebrinas guanajibo
- Primary gauge 50148890 (USGS)
About Rio Culebrinas at Margarita Damsite near Aguada
Rio Culebrinas is a gauged river in the Culebrinas-Guanajibo watershed in Puerto Rico.
What the record shows
This station has 28 years on record, which gives enough history to see how quickly the river can move. The record high is 17.31 ft (5.28 m) in September 2017, and the record low is 3.85 ft (1.17 m) in December 2001. For anyone living or fishing near the channel, that is a wide range to plan around.
The seasonal pattern is not flat. The highest typical month is September at 7.92 ft (2.41 m), while the lowest typical month is March at 5.92 ft (1.8 m). The typical annual swing is 24.1 in (61.1 cm). On a small tropical island basin, that kind of spread matters for bank access, low crossings, and any intake set close to the water surface.
The station drains 94.6 sq mi (245 km2) above the gauge, so the reading reflects runoff from a fairly compact upstream area. In this part of Puerto Rico, rainfall can push levels up fast, and the record shows the reach has room for sharp rises.
The watershed
The Culebrinas-Guanajibo watershed includes a river that responds to rain, not to a slow seasonal melt. The highest typical month is September, which fits the wetter part of the year, while March is the lower end of the usual cycle. That is the pattern most people on this water need to watch: a move from the low end toward the high end can happen within the same season.
Because the basin above this station is 94.6 sq mi (245 km2), a heavy storm over part of that area can show up in the gauge quickly. Cottagers, anglers, and anyone with a riverbank setup should treat late-summer and early-fall rises as part of the normal range here, not as rare events.
Reading the hero number
The number on this page is best read against the median for the same calendar day across the station’s 28 years of record. Raw elevation alone does not tell you whether the river is high for today or just high in an absolute sense. The daily median shows where the river stands relative to its own history.
This station is operated by the U.S. Geological Survey.
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 17,900+ lakes and rivers
Real-time water levels, forecasts, and alerts for lakes and rivers in a growing number of countries. Built on official government data.
Nibi Metrics tracks more than 17,900 gauged lakes and rivers in a growing number of countries, reading directly from official federal monitoring networks: the Water Survey of Canada, the United States Geological Survey, Quebec's provincial hydrometric network, the Environment Agency for England, the Scottish Environment Protection Agency, Natural Resources Wales, the Office of Public Works in Ireland (waterlevel.ie), the Norwegian Water Resources and Energy Directorate (NVE), the State of Queensland's water monitoring network, and on the Great Lakes the Canadian Hydrographic Service and NOAA. 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.
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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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