Otto Holden GS Level 2021
Date Level (m) Flow (m3/s) OPG Forecast Forecast issued on: 3/8/2021 3/3/2021 175.49 724.8 The seasonal headwater drawdown has begun. The headwater will remain between 3/4/2021 175.48 821.8 174.40 m and 175.60 m through the next few days. Daily average flow is expected to 3/5/2021 175.17 800.3 remain in the 650-850 m3/s range through the next week. 3/6/2021 175.09 749.0 3/7/2021 174.85 773.6 3/8/2021 174.60 760.9 3/9/2021 174.46 652.4
178.00
177.50
177.00
176.50
176.00
175.50
175.00 Daily Average DailyAverage (m) Level 174.50
174.00
173.50 1 Jan 31 Jan 3 Mar 2 Apr 3 May 2 Jun 3 Jul 2 Aug 2 Sep 2 Oct 2 Nov 2 Dec
Operating Limits Median 2020 Elevation 2021 Elevation
Ontario Power Generation Provisional Data
Data current as of 3/10/2021 Otto Holden GS Flow 2021
Date Level (m) Flow (m3/s) OPG Forecast Forecast issued on: 3/8/2021 3/3/2021 175.49 724.8 The seasonal headwater drawdown has begun. The headwater will remain between 3/4/2021 175.48 821.8 174.40 m and 175.60 m through the next few days. Daily average flow is expected to 3/5/2021 175.17 800.3 remain in the 650-850 m3/s range through the next week. 3/6/2021 175.09 749.0 3/7/2021 174.85 773.6 3/8/2021 174.60 760.9 3/9/2021 174.46 652.4
1600.0
1400.0
1200.0
/s) 3 1000.0
800.0 Daily Flow (m 600.0
400.0
200.0
0.0 1 Jan 31 Jan 3 Mar 2 Apr 3 May 2 Jun 3 Jul 2 Aug 2 Sep 2 Oct 2 Nov 2 Dec Median 2020 Flow 2021 Flow
Ontario Power Generation Provisional Data
Data current as of 3/10/2021 Ottawa River at Mattawa Level 2021
Date Level (m) OPG Forecast Forecast issued on: 3/8/2021 3/3/2021 152.19 Expect the water level at Mattawa to fluctuate up to 30 cm a day. 3/4/2021 152.26 3/5/2021 152.29 3/6/2021 152.16 3/7/2021 152.18 3/8/2021 152.15 3/9/2021 152.05
154.00
153.50
153.00
152.50
152.00
Daily Average DailyAverage (m) Level 151.50
151.00
150.50 1 Jan 31 Jan 3 Mar 2 Apr 3 May 2 Jun 3 Jul 2 Aug 2 Sep 2 Oct 2 Nov 2 Dec
Median 2020 Elevation 2021 Elevation
Ontario Power Generation Provisional Data
Data current as of 3/10/2021 Des Joachims GS Level 2021
Date Level (m) Flow (m3/s) OPG Forecast Forecast issued on: 3/8/2021 3/3/2021 151.56 775.9 Expect headwater to remain between 149.45 m and 151.60 m. Flow is then expected to 3/4/2021 151.49 878.5 remain in the 600 - 900 m3/s range for the next week. The seasonal headwater is 3/5/2021 151.48 896.6 underway. 3/6/2021 151.42 857.4 3/7/2021 151.36 852.8 3/8/2021 151.35 785.2 3/9/2021 151.36 793.2
153.00
152.50
152.00
151.50
151.00
150.50 Daily Average DailyAverage (m) Level 150.00
149.50
149.00 1 Jan 31 Jan 3 Mar 2 Apr 3 May 2 Jun 3 Jul 2 Aug 2 Sep 2 Oct 2 Nov 2 Dec
Operating Limits Median 2020 Elevation 2021 Elevation
Ontario Power Generation Provisional Data
Data current as of 3/10/2021 Des Joachims GS Flow 2021
Date Level (m) Flow (m3/s) OPG Forecast Forecast issued on: 3/8/2021 3/3/2021 151.56 775.9 Expect headwater to remain between 149.45 m and 151.60 m. Flow is then expected to 3/4/2021 151.49 878.5 remain in the 600 - 900 m3/s range for the next week. The seasonal headwater is 3/5/2021 151.48 896.6 underway. 3/6/2021 151.42 857.4 3/7/2021 151.36 852.8 3/8/2021 151.35 785.2 3/9/2021 151.36 793.2
2000.0
1800.0
1600.0 /s)
3 1400.0
1200.0
1000.0
Daily Flow (m 800.0
600.0
400.0
200.0
0.0 1 Jan 31 Jan 3 Mar 2 Apr 3 May 2 Jun 3 Jul 2 Aug 2 Sep 2 Oct 2 Nov 2 Dec Median 2020 Flow 2021 Flow
Ontario Power Generation Provisional Data
Data current as of 3/10/2021 Ottawa River at Pembroke Level 2021
Date Level (m) OPG Forecast Forecast issued on: 3/8/2021 3/3/2021 111.55 Expect the water level at Pembroke to fluctuate up to 15 cm a day. 3/4/2021 111.56 3/5/2021 111.61 3/6/2021 111.59 3/7/2021 111.58 3/8/2021 111.55 3/9/2021 111.51
112.60
112.40
112.20
112.00
111.80
111.60
111.40 Daily Average DailyAverage (m) Level 111.20
111.00
110.80 1 Jan 31 Jan 3 Mar 2 Apr 3 May 2 Jun 3 Jul 2 Aug 2 Sep 2 Oct 2 Nov 2 Dec
Median 2020 Elevation 2021 Elevation
Ontario Power Generation Provisional Data
Data current as of 3/10/2021 Chenaux GS Level 2021
Date Level (m) Flow (m3/s) OPG Forecast Forecast issued on: 3/8/2021 3/3/2021 85.36 972.1 Expect headwater to remain between 85.20 m and 86.50 m. Inflows remain stable. Daily 3/4/2021 85.63 1025.4 average flow is expected to range from 750-1050 m3/s through the next five days. 3/5/2021 85.53 972.3 3/6/2021 85.51 1006.8 3/7/2021 85.47 1061.7 3/8/2021 85.42 1057.5 3/9/2021 85.49 1024.5
87.00
86.50
86.00
85.50 Daily Averge Daily Averge (m) Level
85.00
84.50 1 Jan 31 Jan 3 Mar 2 Apr 3 May 2 Jun 3 Jul 2 Aug 2 Sep 2 Oct 2 Nov 2 Dec
Operating Limits Median 2020 Elevation 2021 Elevation
Ontario Power Generation Provisional Data
Data current as of 3/10/2021 Chenaux GS Flow 2021
Date Level (m) Flow (m3/s) OPG Forecast Forecast issued on: 3/8/2021 3/3/2021 85.36 972.1 Expect headwater to remain between 85.20 m and 86.50 m. Inflows remain stable. Daily 3/4/2021 85.63 1025.4 average flow is expected to range from 750-1050 m3/s through the next five days. 3/5/2021 85.53 972.3 3/6/2021 85.51 1006.8 3/7/2021 85.47 1061.7 3/8/2021 85.42 1057.5 3/9/2021 85.49 1024.5
3000.0
2500.0 /s) 3 2000.0
1500.0 Daily Flow (m
1000.0
500.0
0.0 1 Jan 31 Jan 3 Mar 2 Apr 3 May 2 Jun 3 Jul 2 Aug 2 Sep 2 Oct 2 Nov 2 Dec Median 2020 Flow 2021 Flow
Ontario Power Generation Provisional Data
Data current as of 3/10/2021 Chats Falls GS Level 2021
Date Level (m) Flow (m3/s) OPG Forecast Forecast issued on: 3/8/2021 3/3/2021 74.05 1186.4 The normal operating range of Chats Lake is 73.97 m to 74.22 m when inflow is below 3/4/2021 74.08 1264.4 2180 m3/s. Daily average flow is expected to range from 1000 - 1300 m3/s through the 3/5/2021 74.05 1282.4 next five days. 3/6/2021 74.07 1268.6 3/7/2021 74.04 1236.7 3/8/2021 74.11 1293.2 3/9/2021 74.08 1347.6
75.20
75.00
74.80
74.60
74.40
Daily Average DailyAverage (m) Level 74.20
74.00
73.80 1 Jan 31 Jan 3 Mar 2 Apr 3 May 2 Jun 3 Jul 2 Aug 2 Sep 2 Oct 2 Nov 2 Dec
Operating Limits Median 2020 Elevation 2021 Elevation
Ontario Power Generation Provisional Data
Data current as of 3/10/2021 Chats Falls GS Flow 2021
Date Level (m) Flow (m3/s) OPG Forecast Forecast issued on: 3/8/2021 3/3/2021 74.05 1186.4 The normal operating range of Chats Lake is 73.97 m to 74.22 m when inflow is below 3/4/2021 74.08 1264.4 2180 m3/s. Daily average flow is expected to range from 1000 - 1300 m3/s through the 3/5/2021 74.05 1282.4 next five days. 3/6/2021 74.07 1268.6 3/7/2021 74.04 1236.7 3/8/2021 74.11 1293.2 3/9/2021 74.08 1347.6
4000.0
3500.0
3000.0
/s) 3 2500.0
2000.0 Daily Flow (m 1500.0
1000.0
500.0
0.0 1 Jan 31 Jan 3 Mar 2 Apr 3 May 2 Jun 3 Jul 2 Aug 2 Sep 2 Oct 2 Nov 2 Dec Median 2020 Flow 2021 Flow
Ontario Power Generation Provisional Data
Data current as of 3/10/2021 Ottawa River at Britannia Level 2021
Date Level (m) OPG Forecast Forecast issued on: 3/8/2021 3/3/2021 58.34 Expect the water level at Britannia to fluctuate up to 15 cm a day. 3/4/2021 58.33 3/5/2021 58.36 3/6/2021 58.31 3/7/2021 58.36 3/8/2021 58.32 3/9/2021 58.37
60.00
59.50
59.00
58.50 Daily Average DailyAverage (m) Level
58.00
57.50 1 Jan 31 Jan 3 Mar 2 Apr 3 May 2 Jun 3 Jul 2 Aug 2 Sep 2 Oct 2 Nov 2 Dec
Median 2020 Elevation 2021 Elevation
Ontario Power Generation Provisional Data
Data current as of 3/10/2021 For further info please contact Matt Mulvihill Stakeholder Relations Advisor Ontario Power Generation p: (613) 932 3072 x319-3423 e: [email protected]
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