John Martin Reservoir
Water data, weather and recent trends from public monitoring sources.
Seven-day lake level
Source: U.S. Geological Survey monitoring station ↗. USGS readings may be provisional and subject to revision.
Go deeper on John Martin Reservoir
National Weather Service forecast
John Martin Reservoir conditions: how to use this page
This page combines a matched USGS lake monitoring location with National Weather Service data near John Martin Reservoir in Colorado. A missing value does not mean the lake has no level or temperature information; it means the matched public sensor did not return a usable current reading through the source used by Lake Conditions Lab.
Water level and temperature can vary by gauge location, sensor depth, wind, inflow, dam operations and weather. Use these readings for trip planning, then follow posted notices, marina guidance and local authorities for on-water decisions.
The USGS monitoring record associated with this page lists a drainage area of approximately 18,915 square miles. This is station metadata, not the lake's surface area.