Lake Steward – Reports, Educational material

   The Lake Steward can be contacted here.

 This section is a miscellany of material from various sources assembled for your information.
Please scroll down to find material on the following items: Algae, Lake Steward Reports & Alerts; Beavers, Boating; Fishing; Shoreline Naturalization;  Shoreline Erosion; Results of Water Testing. 

 Recent posting

Hypoxia and turnover in a small ice-covered temperate lake.

 Blue- Green Algae

Algae & Aquatic Plant Educational Manual

Blue-green algae Cottage and Home Owners information

Blue-green algae and Health

Blue-green algae and drinking water systems

Lake Steward Reports & Alerts; Letters from the President

Lake Steward report Sept 2018

Lake Steward Report August 2018

President’s summary    LakeLevels and Beaver Dam  August 25, 2017

Water level and Flow Management OPTIONS July 21, 2017

President’s letter to all June 25, 2017

The water flow through the beaver baffler has been inadequate to keep up with the precipitation during the past months and with more rain anticipated we examined options for improvement.

In May we wrote to the Ministry of Natural Resources to suggest that we add two more 8″ pipes to improve the flow.  Their response was:

   ” Thank you for your inquiry regarding the potential to add pipes to the existing beaver baffler at Little Silver Lake.

Under our Ministry’s provincial legislation, permission or approval is not required from our office for the construction of a beaver baffler.  It is noted that Little Silver Lake is not an ideal setting for a beaver Baffler due to the large size of the natural watershed (approximately 1026 hectares).  Beaver Bafflers function best in very small watersheds, where there is not a large variance in flows.  The size of Little Silver Lake watershed has the potential to develop flows in excess of a reasonably sized beaver baffler system.

While having natural water levels at Little Silver lake would be our preferred option, any additions to the baffler structure would be at your own risk on the basis of the above information.”

While the Ministry does not think a beaver baffler is ideal (and we agree that it is a compromise), one has been installed on the stream just before the railway tracks for many years with excellent results. The flow downstream there is the same as that from Little Silver Lake.  Our system works well if the precipitation is modest, but we determined last year that during times of exceptional precipitation the time to restore the level could be protracted and some properties remain flooded for extended periods.  Several residents are unable to install their docks at the moment.

The Executive decided this morning to add one or two extra pipes to the existing baffler to improve the flow and mitigate flooding that is occurring on some properties around the lake.  A small team did this during the afternoon and one 8″ black pipe has been added in a position that should not be visible from any neighbouring property.  We still need to install a cage on the inlet to the new pipe.  Flow was increased.  We noted that the level in the culvert is quite high.

If you have any concerns please let ne know as soon as possible.

Frank.

Frank Johnson

president@littlesilverandrainbowlakes.com

The Lake Steward’s report in the August 2016 newsletter can be found  by clicking on the News Sheets from the Association button on the sidebar.

From the AGM  July 2016

LakeStewardReport2016

Alert, April 9th,2016

In response to the RVCA warning about water levels in the Rideau watershed, and advice to lake property owners to take “appropriate” steps to mitigate flood damage, the LSRLPOA Executive decided today to approve further action to ensure adequate flow down the outflow stream of Little Silver Lake.  There is an extensive beaver dam at that point, and two additional pipes will be installed to permit clearance of freshet and storm surges.  This work should be done on Sunday 10th April if we have sufficient volunteers at the dam.

The Lake Steward has also noted that his “fixed” dock is no longer attached to the rock, and so all boating should beware of a large floating structure that will be very low in the water.  Please let him know if it is sighted.  This is expected to drift southwards from the island.

All property owners are encouraged to check their own and their neighbours waterfront equipment for damage or loss.

Please check our website for further updates during the coming weeks.

Frank Johnson.

Baffler Update February 1, 2016

photo 3

Note from Frank Johnson re Beaver Baffler January 9, 2016  

photo -Windows photo Viewer          (click on the picture to enlarge it)

Here is a photograph of the results of our efforts yesterday.  Many thanks to John and Andrew for making the trek in what might have been treacherous weather (if the forecast had been accurate), and commiserations to all those who missed the fun.  I know you all wished to be there!

We installed sixty feet of 8″ corrugated tile drain.  This has a smooth inner wall which is great, and it is nice and light for handling in cold weather.  One snag, however, is that the air trapped between the inner and the outer makes the pipe almost 90% buoyant!  My original plan, to put the inlet barrel on the “far side” of the bay (at the edge of the ice in the photograph) was therefore defeated – the combined weight of John and I was not sufficient to get the pipe under water, and even what we did sink, rapidly returned to the surface when we stopped pushing down.

So the barrel was placed where it is.  This means that the distal end of the pipe is up against the page wire fence, which could mean that debris will not be cleared and it will clog.  If those walking on the road over the next few weeks could keep an eye on this I shall be grateful.  The suction in the new barrel for the 8″ pipe is considerable – be careful if you try to clean it out.  John nearly lost his waders down the pipe…

Paul Pospisil was included in the discussions before and after installation, and we agreed that there is ample capacity downstream for the flow you see here.  We fully expect the beaver to repair the dam where it was cut and trampled, but the pipe capacity is now increased by another 25-35%.  The lake had declined by half an inch by the end of the afternoon.

You can see from the levels on the two existing barrels for the 6″ pipes that the water level had increased another 3″ or more over the last three weeks.

Please let me know how this system is working now.

Each time we overhaul the system I suggest that this will be the last time before spring thaw- but let’s see how this performs. We will plan further installation in the spring.

I will be away for ten days from Monday night.  Please send me an email to report any changes to the system or any other concerns you may have.

In February I hope to compose a general newsletter to detail proposals for the future.

Frank Johnson, Lake Steward

fjohnson@iee.org.

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Lake Steward’s report May 2015

Lake Steward’s Report Updated for AGM 2014

Beavers

CBC “Nature of Things” film Beaver Whisperer.

Latest letter from Lake Steward April 2014

Humans versus Beavers on LSL    January 2014

Important information about Beaver Management can be found below.

Introductory letter from RVCA (updated 2013)
What Can I do? – Flow Chart  ( updated 2013)
Guidelines ( updated 2013)
Notification Form
Options for Controlling Beaver on Private Land

Boating

The following information was provided by our Lake Steward in a 2009 News Sheet and has been reproduced here for your convenience.

I would like to remind everyone of a boater’s checklist to follow before launching any and all watercraft. We are fortunate to not have any zebra mussels in our two lakes and we can all do a few things to ensure that we remain mussel-free.

If your watercraft has been stored over the winter at a marina or other facility, there is a good chance it has been tested by launching it in the waters closest to that marina. Those waters may contain zebra mussels or other invasive species. So it is imperative that you pressure-wash your boat or vessel or thoroughly dry it in the sun for 4 or 5 days prior to launching it in Little Silver or Rainbow Lakes. If you have stored your watercraft on your own property and it has not been to any other lakes or rivers, then this is not necessary.

If you have friends or visitors who wish to bring their watercraft to our lake please also ensure that they follow this procedure. The best way to stop invasive species is through education, and we need to get the word out to everyone.

Thanks for your support.

Fishing

For information on fishing in our lakes please see the article from the Lake Steward under the At The Lake – Fishing section.

Shoreline Naturalization and Solutions for Shoreline Erosion

 The RVCA Shoreline Naturalization Program and the RVCA booklet Solutions for Shoreline Erosion, A Basic Guide to Bioengineering can be found with a click.

Water Testing

For general information on interpreting water quality testing, see the  Document. prepared by Dr Gray Merriam.

Comments on the water quality data for 2017  May & July

Map of Sampling sites on both lakes

LSilverand Rainbow 2017 data   May & July

comments-on-the-2016-data-rvca  below

Lsilver and Rainbow 2016    data

LSilver and Rainbow2015

Additional comments  on the 3 documents below by our Lake Steward

map showing locations.on both lakes

Data Little Silver Lake

Data Rainbow