Colorado River Natural Flow 2026-03-07 • 4 min read Annual Lees Ferry natural flow (water year) from 1906 to present. Loading natural flow data… Sources: USBR Natural Flow Documentation, LFnatFlow1906-2024.2024.9.12.xlsx, Natural Flow and Salt Computation Methods (Nov 2005). #colorado-river #hydrology #data-visualization Back to top ↑ ← Previous post Colorado River Basin Outline Next post → Upper Colorado River Basin: Temperature