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Super User

The Rideau Valley Conservation Authority in partnership with the Otty Lake Association collaborated to enhance fish habitat in Otty Lake — specifically spawning, nursery and feeding habitat for smallmouth and largemouth.

What was done?

Phase 1 (2013)

  • Installed 75 gravel spawning beds a using round river wash stone
  • Deposited wood branches and small trees anchored in cement as well as brush bundles — this wooded debris created habitat for many food sources such as crayfish and aquatic insects as well as places where fish can rest, find shelter and feed

Phase 2 (2014)

  • Installed 83 spawning beds and sank 185 wooden clusters as shelter and feeding habitat
  • Placed 58 large rocks (cornerstones) various nests providing additional cover for dedicated smallmouth bass fathers as they brood their young

Phase 3 (2015)

  • 49 spawning beds, nine brush piles were placed in shallow weedy bays to provide more shelter and feeding habitat
  • 75 cornerstone were placed at various nests which provides cover and shelter for the guarding male and fry

Through all three phases 228 bass nests were installed, 133 cornerstones added, 335 trees/branches and nine brush bundles placed in shallow areas. A total of 840 volunteer hours were accrued. In addition, 20 wood duck nesting boxes were installed.


RVCA staff and volunteers monitored the success of the project with site visits in spring and summer. This entailed counting active nests, making observations on the integrity of the gravel and observing the wood structures using an underwater camera.

The Results:
successful/confirmed spawning on nests

2014 — 41%
2015 — 43%
2016 — 55%
2017 — 36%
2018 — 56%
2019 — 58.5%


Project Partners:

dfo canada
otty lake association
TD Friends of the Environment Foundation
Environment Canada


Jennifer Lamoureux
Aquatic and Fish Habitat Biologist,
Rideau Valley Conservation Authority

613-692-3571 ext. 1108


In September 2007, City of Ottawa Council approved a funding arrangement for a remedial flood control project in Britannia Village. The Britannia Village Flood Control Project looks to reduce expected property damages, public safety risks and inconvenience in this existing community during Ottawa River flood events up to and including the 1:100 year flood. The Rideau Valley Conservation Authority has agreed to undertake the design, construction and long-term management of the flood control system.

Construction began in the fall of 2015 and a Notice of Completion was circulated in February 2018.

2015 Complete Tender Package, October 2015
2015 Removals Plan, September 2015
2015 Planting Plan, September 2015
2015 Community Update Flyer, September 2015
2014 Project Plan for the Proposed Britannia Village Flood Control Project, May 2014
2014 Notice of Filing Document for Review, May 2014
2014 Full Set of Design Drawings — Issued for Review, May 2014
2014 Britannia Village Flood Control Project Notice of Project Approval, July 2014
2013 Flood Control System Design Concept Drawings, October 2013 — Rowatt to Jamieson
2013 Flood Control System Design Concept Drawings, October 2013 — Jamieson to 194 Kehoe
2013 Flood Control System Design Concept Drawings, October 2013 — 196 Kehoe to Britannia Park
2013 nformation presented at Community Meeting, October 23, 2013
2011 Britannia Village Flood Control Project — Summary of Background Information, February 2011
2011 Britannia Village Flood Control Project — Objectives To Be Met, March 2011
2009 RVCA Fact Sheet: The Britannia Village Flood Control Project and Development Regulations in Flood Vulnerable Portions of Britannia Village


Project Partners:

rvca logo black
city of ottawa


Terry K. Davidson, P. Eng.
Director Regulations,
Rideau Valley Conservation Authority

613-692-3571 ext. 1107

The Rideau Valley Conservation Foundation (RVCF) is always looking for enthusiastic individuals to become board members and assist with fundraising efforts. To learn more about the RVCF visit

Diane Downey
RVCF Executive Director

613-692-3571 ext. 1126

November 09, 2016

Low Flow Reports

Low Flow Frequency Analysis (Rideau at Carleton, Jock at Moodie Drive and Kemptville at Kemptville) — Technical Memo, 2007
Ontario Low Water Response Groundwater Indicator Pilot Project Final Report, 2009
RVCA Low Water Information Report, 2009
November 08, 2015

2015 Annual Report

November 08, 2014

2014 Annual Report

November 08, 2013

2013 Annual Report

November 08, 2012

2012 Annual Report

November 08, 2011

2011 Annual Report

Page 80 of 102

Contact Us

Rideau Valley Conservation Authority
3889 Rideau Valley Drive
Manotick, Ontario K4M 1A5

613-692-3571, 1-800-267-3504



Regular Hours: Monday to Friday, 8:30 a.m. to 4:30 p.m.

Member of: conservation ontario