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Water Supply

The Main Canal Advisory Committee (SMRID, TID, RID), will be meeting in advance of the irrigation season to review the water supply outlook. The annual allocation is typically set in April, following the peak accumulation of snow water equivalent in the upper watersheds.

January 08, 2020 Update: We are at or above the upper quartile for accumulations in the Akamina and Flat Top snow pillows and mid-range for Many Glacier. This means Waterton Reservoir looks good for filling and contributing to St. Mary volumes this year if remaining accumulations are at or above normal from here on in. It is too early to tell the prospects for St. Mary Reservoir as annual variance on Many Glacier doesn’t separate until early February. Headworks reservoirs filled a bit during late fall snow/melt events leaving us only a small amount below winter target levels.

Alberta Environment and Parks publishes data on Alberta's River Basins. Their website can be found by following the link below:


Alberta's River Basins

The St. Mary Project, including TID, is within the Oldman River Basin. We receive our water from the Waterton, St. Mary and Belly Rivers. ​Snow pillows are tracked to provide an indication of the water available in our natural "mountain reservoirs". Akamina snow pillow is in the Waterton River headwaters, Flat Top Mt. is in the Waterton and Belly River headwaters and Many Glacier Mt is in the St. Mary headwaters.

Links to the Water Supply Outlook, Water Management Reports and various other Maps and Data Summaries are also available from this site.

This information is summarized for us and provided weekly from Water Management Operations (part of AESRD) to assist us in managing our water supply. Alberta Agriculture and Rural Development (AARD) provides a summary each spring that provides a statistical analysis of the available water to inform our decisions regarding water allocation.

Water Startup

TID orders our water from SMRID and we are dependent on their schedule for startup. SMRID has advised us that they are planning on having district-wide water available during the week of May 1st, 2017 (weather depending). TID will have water available from SMRID the week before to start flushing and filling our systems. We anticipate that all TID rehabilitation work will be completed by the end of April. Smaller maintenance such as valve replacement will continue as long as possible.


TID water MAY be available for use in some areas starting the week of May 1st. If you would like water earlier than May 1st, please place a water order with your ditchrider as per normal, so that we can prioritize our schedule to attempt to meet your request. Your ditchrider will then advise you when your water will be available. Note that any unused water orders that cannot be reassigned will be assessed against your annual allocation. The annual allocation for 2017 has been set at 18".