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
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.
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.
Costilla Reservoir near Costilla Water Level
Live lake level, flow, historical records and forecast for Costilla Reservoir near Costilla in NM, United States, built from official government gauge data.
- Location NM, United States
- Watershed upper rio grande
- Primary gauge 08253900 (USGS)
About Costilla Reservoir near Costilla
Costilla Reservoir - An essential water resource in New Mexico.
Nestled in the Upper Rio Grande watershed, Costilla Reservoir near Costilla serves as a vital storage and recreation area in the arid landscape of northern New Mexico. This reservoir is strategically located to capture and hold water amid the region's variable hydrology, influenced primarily by seasonal snowmelt and monsoon rains.
The watershed context
The Upper Rio Grande watershed is characterized by its complex interplay of snowmelt and sporadic rainfall, shaping the hydrological dynamics that define this area. Snowmelt from the high country is crucial for spring flows, replenishing the water systems after the winter months. However, the summer months introduce a contrasting climate with the monsoon season, which brings intense, localized rainfall, leading to occasional flash floods. These natural cycles are essential for maintaining the ecological balance and water supply in the region.
Costilla Reservoir itself plays an integral role within this watershed, effectively draining roughly 54.6 square miles upstream. It captures runoff and contributes to the overall water availability necessary for various ecological and recreational needs. Surrounding this reservoir are several creeks, including Costilla Creek and its tributaries, which further emphasize the interconnected nature of the area’s water systems.
Why the data matters here
Understanding the water levels at Costilla Reservoir is crucial, especially given the region's susceptibility to dry stretches interrupted by sudden monsoon events. Current water level readings from the USGS help gauge the reservoir's status in relation to historical values. By comparing today’s measurements to the median for this calendar day over the past 19 years, one can assess the reservoir’s current condition more accurately than by looking at the elevation alone. This analysis aids local residents, farmers, and recreational users in planning their activities and water usage, ensuring they are prepared for the natural variability that characterizes this part of New Mexico.
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
