Colorado Plateau rivers & Lake Powell

Live data from USGS National Water Information System. Discharge in cubic feet per second (cfs); lake elevation in feet. v1.8 · 2026-11-01

log scale (discharge; axis starts at 100 cfs) include Paria + Little Colorado in sum

River discharge (dashed = Escalante, Dirty Devil, Paria, Little Colorado)

Total river discharge vs. Glen Canyon Dam release

Lake Powell elevation (Glen Canyon Dam, NAVD 88)

show rate of change (ft/day, right axis) averaging window

Colorado River in Grand Canyon below the Little Colorado (estimate for river running)

Estimate = Lees Ferry + Paria + Little Colorado (a missing tributary reading counts as 0). Ignores travel time (~1 day to the Little Colorado) and smaller tributaries such as Kanab and Havasu creeks.