What today's level means

What each level means

Approximate by design — anchored to published thresholds (ramp minimums, full pool, spillway, records) but every cove is different.

1. Above full poolabove 3,700 ft

   Above 3,700 ft Glen Canyon Dam is into surcharge territory — in 1983 the lake hit 3,708.34 ft and the spillways suffered famous cavitation damage.

2. Filling toward full3,673–3,700 ft

   Within ~27 ft of full pool, unseen since the turn of the century; expect large dam releases and shifting shorelines.

3. Healthy modern levels3,588–3,673 ft

   Every major launch ramp is above its NPS minimum (the highest, Antelope Point, needs 3,588 ft) and marinas operate normally.

4. Ramps closing one by one3,525–3,588 ft

   Concrete ramps drop below NPS minimums on the way down — Bullfrog Main at 3,578, Wahweap Stateline at 3,567, Halls Crossing at 3,557, Wahweap Main at 3,545.

5. Low-water access only3,490–3,525 ft

   Only the low-water ramps (Stateline Auxiliary 3,515 ft; Bullfrog North at own risk) keep working; the 2023 record low was 3,519.92 ft, just above minimum power pool at 3,490 ft.

6. Below minimum power poolbelow 3,490 ft

   Under 3,490 ft Glen Canyon Dam can no longer reliably generate power; dead pool — no gravity releases at all — sits at 3,370 ft. Never reached.