8245.50 ft NGVD29
level 34.5 ft below full pool — unusually low for mid-August
Reading comes straight from Bureau of Reclamation RISE (Reclamation RISE item 384) and updates live when you load this page.
Lake Granby 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.
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.
- 2015 (wettest on record)
- 2002 (driest on record)
- 2025 (last year)
- 2026 (this year)
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 | 8280.00 ft NGVD29 · per USBR / Northern Water (C-BT Project) full-pool reference |
|---|---|
| Conservation capacity | 465,600 acre-feet · per USBR / Northern Water (C-BT Project) capacity reference |
| Gauge | Reclamation RISE item 384 · Bureau of Reclamation RISE |
| Datum | NGVD29 — USGS WDR: usable capacity 465,600 ac-ft between 8,186.00 and 8,280.00 ft (top of spillway gates), NGVD29. USGS site 09018500 is historical records, not live IV. |
| 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
How full is Lake Granby right now?
Lake Granby is at 8245.50 ft (NGVD29) as of August 14, 2026 — 34.5 ft below full pool — unusually low for mid-August
Is Lake Granby full?
Not quite — at 8245.50 ft, Lake Granby is 34.5 ft below its full pool of 8280.00 ft (NGVD29).
What is full pool for Lake Granby?
Full pool (the conservation pool) for Lake Granby is 8280.00 ft NGVD29, per USBR / Northern Water (C-BT Project) full-pool reference. Levels above it use flood storage; levels below it are drawdown.