Provincial Forecast
Regulatory Information
Please find below the October 2, 2025 update:
Lake Diefenbaker Forecast Overview:
- Inflows are expected to remain steady at around 60-70 m³/s.
- Based on the forecasted inflows, the reservoir is expected to drop by 0.06 m over the next 10 days.
- The current plan is to maintain outflows around 90 m³/s.
Current Conditions:
- Flows upstream of Lake Diefenbaker continue to recede and remain below the median range for this time of year.
- Inflows into Lake Diefenbaker are near lower quartile level and expected to remain near lower quartile levels over the next week.
- Outflows from Lake Diefenbaker are expected to remain near 90 m³/s.
- The reservoir is at 555.26 m. This level is between lower quartile and median range levels for this time of year. Water levels are expected to continue to slowly decline.
Hydrologic Conditions:
- Minimal precipitation was received in the headwaters of the North and South Saskatchewan river basins over the past three days (Sept 29-Oct 01).
- Minimal rainfall is expected for the rest of the week.
An Experienced Team
We love our Saskatchewan waterways, and we also know a lot about them. If you need help finding information or determining if your shoreline or water-related project needs a permit, we can help! Use the contact form or give us a call to get started.