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 · 27
Dams & defenses · 17
Desalination · 9
Programs · 5
Lake Mead
Boulder Basin, dam axis to Saddle Island · United States
high · 88illustrative section
1,060
ft at 2026
49%
of operating range
-63
Δ vs record median
Historical record: cursor follows the timeline
Curated approximate annual record (±2 ft). USBR end-of-year elevations (±2 ft). TODO(ingestion): USBR RISE.
Year 2026