Total daily water demand from the City’s public Climate & Environment dashboard, January 2024 onward. Background shading marks Calgary summer (June–September, orange) and winter (December–February, blue) so the seasonal swing is visible at a glance. Four reference lines overlay the demand curve — two true daily ceilings, two annual ceilings shown as daily-average equivalents (annual figure ÷ 365) so they can share the axis:

• ■ Licence (daily avg): 1,260ML/day — Calgary’s Bow River licence (460k ML/yr) shown as a daily average. Annual ceiling.
• ■ Plant capacity: 950 ML/day (Bearspaw 550 + Glenmore 400 rated post-upgrade). True daily ceiling.
• ■ Plan peak-day target (2040): 908 ML/day — ~96% of plant capacity. True daily ceiling.
• ■ Plan annual cap (daily avg): 638ML/day — the Water Efficiency Plan’s 233k ML/yr ceiling shown as a daily average. Annual ceiling.

Peak observed in this dataset: 698 ML on 2025-06-09 — about 73% of plant capacity and 77% of the 2040 peak target.