Boulder Reservoir water level & water temperature
Boulder Reservoir water level is measured by NASA's SWOT satellite via PO.DAAC Hydrocron — a new elevation roughly every 1–2 weeks as the satellite passes over. Full pool elevation is 5177 ft. The latest pass reading, recent trend, and multi-year history appear below as the data loads.
Boulder Reservoir water temperature by month
Boulder Reservoir surface water temperature averages from about 36°F in January to 75°F in July over the year, based on a 40-year USGS model (1980–2020). Cold-water caution applies in roughly half the year, when the typical temperature is below 60°F.
Typical surface temperatures (°F), modeled historical averages (USGS 185k-lake dataset, 1980–2020). Colors flag cold-water risk: blue/amber/red = cool, caution, danger. Live and recent readings appear above where a sensor is available.