Lake Powell releases can leave Glen Canyon Dam through two different paths in the USBR record: power release volume and bypass release volume. This page isolates the bypass side of that record so it is easier to see when the dam has relied on the outlet works rather than the normal penstock path.
The top chart shows the full monthly bypass-release record available in the Lake Powell series. The lower chart zooms into the recent daily record.
Monthly Bypass Release Volume
Monthly bypass release volume from the full available Lake Powell USBR series. The local bypass record begins in June 2004, so this does not reach back to the beginning of reservoir operations.
Daily Bypass Release Volume
Daily bypass release volume from January 1, 2024 through the latest available day.
Data Sources
- USBR Lake Powell Hydrodata dashboard and the derived local daily reservoir series used here for
bypass_release_volume.12
- 1
United States Bureau of Reclamation - Lake Powell Hydrodata Dashboard. ↩︎
- 2
Derived local dataset used by this chart - lake-powell.json. ↩︎