- Lac Deschênes Water Level1, Past 48 Hours — NSC web page graphical depiction of water level.
- Lac Deschênes Water Levels1, Current & and Historic — A graphical depiction of current & historic water levels, showing the median and historical high and low levels. Tabular depiction also available. Ottawa River Regulation Planning Board (ORRPB) website.
- Lac Deschênes Water Levels1, Forecast — A graphical depiction of current & historic water levels, plus a 3-day prediction. ORRPB website.
- Lac Deschênes Water Levels1, Historic — Monthly and annual mean water levels in table format since 1950. ORRPB website.
- Lac Deschênes Water Levels1 & Flow Rates — Real-time and historic water levels in graphical and tabular format. Environment Canada website. Similar data to that available on the ORRPB website.
Notes:
- The Mean Water Level datum at Britannia1 is 57.9 m.
- The BYC gates cannot be removed until the water level drops to roughly 59.0 m.
- During the 2017 flood, the water level reached a peak of 60.44 m.
- During the 2019 flood, the water level reached a peak of 60.70 m on the evening of 2019-04-30. That’s 2.8 m, or 9′ 2″, above datum. The second peak was at 60.61 m in the early morning of 2019-05-14.
- At a water level of 60.15 m, the water will be at the top of the south crane well; at 60.20 m, it will be at the top of the north crane well. The service docks cannot be attached if the water level is above approximately 59.7 m.
1 The Britannia water level and flow metering station 02KF005 is actually located at NSC!
Page updated: 2023-08-02.
Update log
2017:
12 Jan: HM: Created this update log. Updated link for http://wateroffice.ec.gc.ca/report/real_time_e.html?stn=02KF005.
13 Jan: HM: Deleted duplicate link.
2019:
02 May: HM: Added notes about 2017 and 2019 floods.
08 Jun: HM: Added notes about water levels and crane well walls, and connecting service docks.
2020:
09 Apr: HM: Renamed second bullet from “Water Levels and Flows — Ottawa River level Forecasts” to “Lake Deschenes at Britannia – A graphical depiction of current & forecast water levels, along with median and historical high and low levels.” Updated links to second and third bullets.
20 Oct: HM: Re-ordered links. Added link to https://nsc.wmtest.ca/an/weather/water-level-at-britannia/ (past 48 hours). Updated link “http://ottawariver.ca/forecast/lake-deschenes-at-britannia” to “http://ottawariver.ca/location/britannia/. Other editorial updates.
2017:
12 Jan: HM: Created this update log. Updated link for http://wateroffice.ec.gc.ca/report/real_time_e.html?stn=02KF005.
13 Jan: HM: Deleted duplicate link.
2019:
02 May: HM: Added notes about 2017 and 2019 floods.
08 Jun: HM: Added notes about water levels and crane well walls, and connecting service docks.
2020:
09 Apr: HM: Renamed second bullet from “Water Levels and Flows — Ottawa River level Forecasts” to “Lake Deschenes at Britannia – A graphical depiction of current & forecast water levels, along with median and historical high and low levels.” Updated links to second and third bullets.
20 Oct: HM: Re-ordered links. Added link to https://nsc.wmtest.ca/an/weather/water-level-at-britannia/ (past 48 hours). Updated link “http://ottawariver.ca/forecast/lake-deschenes-at-britannia” to “http://ottawariver.ca/location/britannia/. Other editorial updates.
2021-06-11, HM: Updated publish date (was 2013-04-15) and added note below.
2021-11-29, HM: Added note about Britannia station located at NSC.
2022-05-01, HM: Added link to 3-day predictive water levels. Other editorial changes; notably standardizing on “Lac Dechenes” vs “Ottawa River”.
2022-08-16: DS: converted Water Level Monitoring link from post to page.
NOTE: Update the publish date and time when updating page.