Alberta River Flows

This schedule is normally updated every business day with the latest river flows downstream of TransAlta's hydro plants.

 (Last Update: Jul. 22, 2016 at 14:30 AM)


Facility Date Plant On Plant Off Flow Rate
Barrier Fri Jul 22 05:00 24:00 Approx. 30 cms
Barrier Sat Jul 23 00:00 21:00 Approx. 30 cms
Barrier Sun Jul 24 07:00 21:00 Approx. 30 cms
Barrier Mon Jul 25 07:00 21:00 Approx. 30 cms
Pocaterra Fri Jul 22 05:00 21:00 Approx. 23.6 cms
Pocaterra Sat Jul 23 05:00 21:00 Approx. 23.6 cms
Pocaterra Sun Jul 24 05:00 21:00 Approx. 23.6 cms
Pocaterra Mon Jul 25 05:00 21:00 Approx. 23.6 cms


Operation will follow requirements from Alberta Environment and Parks as per the multi-year agreement with TransAlta. More info here.

Interlakes spillway July 15, 2016 update:

TransAlta’s Interlakes spillway is currently open due to a maintenance outage at the hydro plant in Kananaskis. TransAlta’s hydro team have consulted with Alberta Environment & Parks about the opening of the spillways that will result in a small volume of water flowing between Upper and Lower Kananaskis lakes to maintain a safe elevation of the reservoirs. Visitors and hikers in the area are asked to obey signage and local detours during this time.


1. Actual flows and levels are often more or less than projected and at times can vary considerably. Actual flows are also subject to change without public notice.

2. The public is advised to remain clear of all waterways immediately upstream and downstream of TransAlta’s hydro facilities as flows may change rapidly and without notice. TransAlta’s first priority is the safety and well-being of employees, the public, and the communities where we live and work. Obey all signage and barricades.

Visitors and campers to Alberta's parks are advised to review Alberta Parks and Banff National Park for current safety advisories.

For information on reservoir levels and flows at other locations in Alberta please visit Alberta Environment - river basins.



Use of the river and downstream areas of the dam can be hazardous and information presented on this website, including the actual or projected flows and the operating characteristics of the facilities, may not be accurate or current and should not be relied upon. Any person using flow forecasts or facility information does so at their own risk. TransAlta Corporation, its subsidiaries, shareholders, directors, officers, employees and agents (“TransAlta”) expressly disclaims any warranties or representations with respect to this website, either expressed or implied, including but not limited to, the implied warranties of fitness for the purpose of accessing operating plans, forecasts or hydrological or other data and TransAlta makes no warranty or representation that the information is or will be error-free or current. TransAlta, nor anyone else involved in the development of this site, shall be liable for any damages arising or in any way connected to the use or inability to use this site or the information contained on this site, including without limitation, any liability for the accuracy, availability, suitability, reliability, usability, completeness or timeliness of data, or for any direct, indirect, incidental, consequential or special damages.

Last updated: July 22, 2016