Section view

The cut-away

A cross-section for every feature in the atlas. Scrub the timeline to move the water. Level metrics draw a true elevation axis; other metrics draw the record percentile. Synthesized sections are labeled until surveyed bathymetry lands.

Reservoirs & lakes · 23
Tide & coastal gauges · 10
River gauges · 10
Canals & waterways · 7
Dams & defenses · 17
Desalination · 9
Programs · 5

Lake Mead

Boulder Basin, dam axis to Saddle Island · United States
high · 88illustrative section
full 1,229dead 8952026 · 1,060 ftrecord highmedianrecord low8951,0621,2290slice length (normalized)
1,060
ft at 2026
49%
of operating range
-63
Δ vs record median
Historical record: cursor follows the timeline
record median19401960198020002020757.41008.51259.6
Curated approximate annual record (±2 ft). USBR end-of-year elevations (±2 ft). TODO(ingestion): USBR RISE.
2026