Desert and playa localities pair the best collecting light with the worst exposure. This standard sets per-person water minimums, mandatory turnaround times keyed to forecast highs, shade and vehicle staging requirements, and the buddy-check cadence for symptoms of heat illness.
Heat, Hydration, and Desert Fieldwork Standard
Water minimums, turnaround times, and buddy checks for playa, desert, and high-sun outings.
Scope: Applies to outings forecast above 85°F or on shadeless terrain such as playas, dunes, and salt flats.
Checklist
Carry at least one gallon of water per person per day; no sharing reserves.
Set a turnaround time keyed to the forecast high and brief it at the trailhead.
Stage a shaded vehicle or canopy within reach of the collecting area.
Run buddy checks on the hour for heat-illness symptoms.
Cancel or relocate when the forecast exceeds the chapter heat ceiling.