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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San Carlos Reservoir at Coolidge Dam Water Level
Live lake level, flow, historical records and forecast for San Carlos Reservoir at Coolidge Dam in AZ, United States, built from official government gauge data.
- Location AZ, United States
- Watershed upper gila san carlos reservoir
- Primary gauge 09469000 (USGS)
About San Carlos Reservoir at Coolidge Dam
San Carlos Reservoir - A vital water resource in Arizona.
San Carlos Reservoir is an essential water body located at Coolidge Dam in Arizona. This reservoir plays a crucial role in the local hydrology and serves as a significant water storage area within the Upper Gila-San Carlos Reservoir watershed. Covering a catchment area of approximately 12,886 square miles, it collects water from various sources, including seasonal rains and high-country melt.
The watershed context
The Upper Gila-San Carlos Reservoir watershed is characterized by its arid environment, where water availability can vary dramatically. In this region, summer monsoon thunderstorms often trigger sudden and intense flash floods, while winter storms, accompanied by melting mountain snow, contribute to the flow in the larger rivers. With many channels running dry between these events, rainfall becomes a critical factor for maintaining water levels in reservoirs like San Carlos.
This reservoir also has a number of peers, including Bonita Creek and Eagle Creek, which further highlight the interconnected nature of Arizona's waterways. These neighboring streams and the Gila River contribute to the overall hydrology of the area, although the flash floods and dry spells present unique challenges to water management and conservation.
Why the data matters here
As of today, the water level in San Carlos Reservoir is regularly monitored by the U.S. Geological Survey (USGS). Evaluating its current readings in the context of historical data offers valuable insights for local water users and stakeholders. Today's measurement is compared against the median for this calendar day over four years of record, allowing for a clearer understanding of seasonal variations and trends. This method provides a more helpful gauge of water status than raw elevation figures alone, ensuring that the local community can respond effectively to the ever-changing conditions in this arid region.
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
