Flow Estimates for the Current Year

The graph below shows the Athabasca River flow estimates (black dots) used in implementation of the Lower Athabasca Region Surface Water Quantity Management Framework for the Lower Athabasca River weekly management triggers and water withdrawal limits for the current year 2021. The table below presents the Athabasca River flow estimates used for the previous year.

The river naturally fluctuates throughout the year, with flows reaching their peak around July (approximately week 26 on the graph). As natural flow increases, so does the minimum flow required to maintain a healthy ecosystem.

Flow estimates for the current year 2021

*Week #1 is January 1 - 7. Week #52 is December 24th - 31st.


Flow estimates for the previous year 2020

Week Flow (m3/s) Week Flow (m3/s)
1 215 27 2247
2 218 28 3422
3 262 29 2508
4 250 30 2324
5 251 31 2122
6 244 32 1646
7 235 33 1342
8 220 34 1050
9 222 35 1290
10 227 36 1091
11 230 37 998
12 239 38 934
13 241 39 806.26
14 287 40 760
15 287 41 691
16 380 42 847
17 480 43 682
18 1500 44 555
19 823 45 686
20 1574 46 499
21 1088 47 368
22 3076 48 350
23 1999 49 305
24 3574 50 276
25 3233 51 279
26 2041 52 256

* On occasion, weekly flow estimates may not be available for various reasons including spring breakup, the gauge being out of service, or data outages.

^An incorrect flow estimate was initially posted on the Athabasca River Conditions and Use website for Week 43. The correct flow estimate for Week 43 is 682m3/s.