Nibi Metrics
Real-time water levels, forecasts, and alerts for lakes and rivers across Canada and the US. Built on official government data.
Nibi Metrics turns raw gauge readings from official hydrometric networks into something a person standing on a dock can actually use: is the water high or low for today, which way is it moving, and how unusual is this? This page explains where every number on the platform comes from and what we do to it along the way.
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For five years, spring 2019 was the mark every Lake Muskoka decision answered to. In April 2026 the lake went two centimeters higher - and the official books have not caught up yet.
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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.
N. Halawa Str near Quar. Stn. at Halawa, Oahu Water Level
Live river level, flow, historical records and forecast for N. Halawa Str near Quar. Stn. at Halawa, Oahu in HI, United States, built from official government gauge data.
- Location HI, United States
- Watershed oahu
- Primary gauge 16226400 (USGS)
About N. Halawa Str near Quar. Stn. at Halawa, Oahu
N. Halawa Stream - A vibrant waterway on Oahu's northeastern coast.
N. Halawa Stream flows near Quarter Station at Halawa, Oahu, characterized by its dynamic response to rainfall. This river is part of the Oahu watershed, which encompasses the diverse landscapes of the island, marked by steep terrains that can rapidly channel rainfall into significant runoff.
## The watershed context The Oahu watershed is known for its tropical island hydrology, which can lead to dramatic changes in water levels within a matter of minutes to hours. This phenomenon is driven primarily by intense rainfall and is accentuated by trade winds and Kona storms that can sweep across the region. The area lacks a traditional snowmelt season, making the summer months especially crucial as evaporation and low inflow can lead to decreased stream levels. North Halawa Stream, draining approximately 4.6 square miles of catchment area, is a key feature of this hydrological landscape, providing critical water resources for both the local ecosystem and community.
## Why the data matters here Water levels in N. Halawa Stream are monitored by the U.S. Geological Survey (USGS), offering vital information not only for flood watchers but also for locals who rely on the stream's health for various activities and ecological balance. Current water data is essential, especially during the rainy season, when flash floods can occur unexpectedly. Observing current readings compared to the historical median for this date among the 25 years of record helps to contextualize today's conditions. This data provides insight into seasonal patterns and alerts the community to any possible changes in hydrology, ensuring the safety and awareness of those living and working near the stream.
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
