20 Ashburnham Lock 20, Ashburnham – Trent Severn Waterway ErrorJavascript not activated ← Lock 19 Lock 21 → Lock 1 – Trenton Lock 2 – Sidney Lock 3 – Glen Miller Lock 4 – Batawa Lock 5 – Trent Lock 6 – Frankford Lock 7 – Glen Ross Lock 8 – Percey Reach Lock 9 – Meyers Lock 10 – Hagues Reach Lock 11/12 – Ranney Falls Lock 13 – Campbellford Lock 14 – Crowe Bay Lock 15 – Healey Falls Lock 16/17 – Healey Falls Lock 18 – Hastings Lock 19 – Scotts Mills Lock 20 – Ashburnham Lock 21 – Peterborough Lock 22 – Nassau Mills Lock 23 – Otonabee Lock 24 – Douro Lock 25 – Sawer Creek Lock 26 – Lakefield Lock 27 – Youngs Point Lock 28(29) – Burleigh Falls Lock 30 – Lovesick Lock 31 – Buckhorn Lock 32 – Bobcaygeon Lock 33 – Lindsay Lock 34 – Fenelon Falls Lock 35 – Rosedale Lock 36 – Kirkfield Lock 37 – Bolsover Lock 38 – Talbot Lock 39 – Portage Lock 40 – Thorah Lock 41 – Gamebridge Lock 42 – Couchiching Lock 43 – Swift Rapids Lock 44 – Big Chute Lock 45 – Port Severn Click here for Dan’s tour of the Rideau Canal.