lakedates.com

Idaho · Bureau of Reclamation

Lake Cascade water level

Today's reading against full pool and Lake Cascade's own seasonal history.

Searched “Cascade lake level” or “lake level for Lake Cascade”? Same lake, same reading — you're in the right place. The current reading is right here too, whether you typed “current Lake Cascade water level” or “current water level at Lake Cascade”.

FULL POOL 4815 4820 4825
Elevation, feet (Reclamation Hydromet project datum)

as of September 22, 2026

4815.62 ft Reclamation Hydromet project datum

level 12.4 ft below full pool — typical for late September

Reading comes straight from Bureau of Reclamation RISE (Reclamation RISE item 129979) and updates live when you load this page.

Is Lake Cascade full?

Not quite — 12.4 ft below full pool as of September 22, 2026

How full is Lake Cascade? Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.

Lake Cascade through the year

The band is the lake's own normal: where the level has run on each calendar day, 1980–2026. The summer drawdown — and how this year sits in it — shows up without reading a single number.

full pool 4815 4820 4825 JFMAMJJASOND
Median and normal range by day of year, 1980–2026 · elevation, feet (Reclamation Hydromet project datum)

This year vs the years that matter

This year's trace against last year and the driest and wettest years on record — the drought-context question every lake regular asks.

full pool 4810 4815 4820 4825 JFMAMJJASOND
  • 2026 (this year)
  • 2025 (last year)
  • 1996 (wettest on record)
  • 2001 (driest on record)

Full pool, datum, and the gauge

"Full pool" here means the conservation pool — the level the lake is designed to hold for water supply and recreation, not the flood-control space above it. The full explainer covers flood pool and dead pool too.

Full pool 4828.00 ft Reclamation Hydromet project datum · per Bureau of Reclamation full-pool reference
Conservation capacity 646,500 acre-feet · per Bureau of Reclamation capacity reference
Gauge Reclamation RISE item 129979 · Bureau of Reclamation RISE
Datum Reclamation Hydromet project datum
Last verified August 15, 2026

LakeDates reports lake level, not ramp status. Whether a given ramp or marina is usable at this level varies ramp by ramp — call the marina before you tow.

Quick answers

What is the lake level for Lake Cascade today?

Lake Cascade is at 4815.62 ft (Reclamation Hydromet project datum) as of September 22, 2026 — 12.4 ft below full pool — typical for late September.

Is Lake Cascade full?

Not quite — at 4815.62 ft on September 22, 2026, Lake Cascade is 12.4 ft below its full pool of 4828.00 ft (Reclamation Hydromet project datum).

How full is Lake Cascade?

Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.

What is full pool for Lake Cascade?

Full pool (the conservation pool) for Lake Cascade is 4828.00 ft Reclamation Hydromet project datum, per Bureau of Reclamation full-pool reference. Levels above it use flood storage; levels below it are drawdown.