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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.

Water Stories

The flood of record that was overtaken

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.

Why the Assiniboine floods every spring

Inside the freshet cycle that puts Manitoba shorelines at risk each year - and why 2026 broke the script.

How snowpack becomes summer water

The science of snow water equivalent and why it drives the season ahead.

Reading a staff gauge like a hydrologist

What the numbers on the measuring stick actually tell you.

Flash Flood Alley: how Texas rivers rise in hours

Why Central and South Texas rivers go from gravel beds to fifty-year records in an afternoon - including July 2026 on the Nueces.

What a "100-year flood" actually means

One percent, every year, forever - unwrapping hydrology's most misunderstood phrase, and how it differs from our own percentiles.

Las Vegas Wash Overflow at Lake Las Vegas Inlet Water Level

Live river level, flow, historical records and forecast for Las Vegas Wash Overflow at Lake Las Vegas Inlet in NV, United States, built from official government gauge data.

About Las Vegas Wash Overflow at Lake Las Vegas Inlet

Las Vegas Wash Overflow at Lake Las Vegas Inlet - A key flow point in the Las Vegas Wash system.

The Las Vegas Wash Overflow at Lake Las Vegas Inlet serves as a vital monitoring point for one of the key waterways in Southern Nevada. It is part of the larger Las Vegas Wash, which plays an important role in draining a catchment area of approximately 2,190 square miles. This river segment is woven into the fabric of the Las Vegas region, capturing runoff during seasonal torrents and feeding into Lake Las Vegas.

The watershed context

The Las Vegas Wash is influenced by the arid Great Basin hydrology, typified by seasonal fluctuations driven primarily by mountain snowmelt in spring, which can lead to surges in water flow. Each summer, thunderstorms can create localized flash floods that significantly alter the flow characteristics of creeks and washes across the region, contributing to the ephemeral nature of many channels. At the Las Vegas Wash Overflow, the interaction of these elements is crucial in setting the stage for both flood events and normal flows.

Nearby waterways such as C-1 Channel and Flamingo Wash also contribute to the hydrology of the area, underscoring the interconnectedness of these tributaries and systems. The landscape is shaped not only by its topography but also by the rapid changes that can occur during periods of heavy rain.

Why the data matters here

Understanding water levels and flow at the Las Vegas Wash Overflow is essential not only for flood prevention and water management but also for ecological monitoring. The U.S. Geological Survey (USGS) uses this monitoring station to publish data on both lake levels and river flows, providing a reliable source of information for residents, water managers, and environmentalists alike.

Today's reading at this site is compared against the median for the same calendar day based on over 35 years of historical data. This method provides a better understanding of current conditions relative to historical patterns, helping to contextualize the data beyond simple elevation numbers. This can alert cottagers, anglers, and residents to potential changes in water behavior, illustrating the importance of informed decision-making in a region marked by variable hydrology.

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