RAINBOW LAKE

Beautiful Place, Wonderful Community

Announcements Around The Lake

 Help us keep Rainbow Lake healthy and beautiful! Join the RLA for 2025 now!

RLA MEMBERSHIP PICNIC

Come Celebrate the Closing Days of Summer!

The Summer Picnic and Community Get-Together for RLA members is planned for Saturday, August 23rd, 1:00 pm at Crescent Beach.  Please join us for a great time of food, games and fun. We are planning to have hotdogs, burgers, beverages, and lots of yummy potluck items.  Best of all, you'll get to spend an after noon by the lake with friends and neighbors!

For the picnic, we ask that members bring a salad, side dish, covered dish or dessert to share with your neighbors.

The weather looks good so far, but the rain date will be the 24^th.  If you haven't renewed your membership yet, please sign up online (https://www.rainbowlake.org/membership/),mail it in, or do so at the picnic.

We look forward to seeing you on the 23rd!

LAKE NEWS

Phosphorous Reduction Project - The lake is looking good this summer considering how hot it’s been.  This past spring, we continued our multi-year Phosphorous Reduction Project and treated the lake with a natural phosphorous binding compound.  The treatment takes the phosphorous out of the water column so it is no longer available for the algae to use and grow.  This ultimately prevents the eutrophication, or lack of oxygen, of the lake.  The compound has been used for many years in drinking water sources; although, the one drawback is it’s expensive.  We used our Lake Improvement Fund to finance the first two rounds, but we plan another treatment next year.  Please help make the lake healthier and donate at https://www.rainbowlake.org/lake-environment/.   There is quite a bit of information on that page and we will be available to discuss at the picnic.

The phosphorous reduction takes time, so we will continue to treat the filamentous algae (perfectly safe, just a little unsightly) throughout the summer so we can enjoy our beautiful lake!

We hope to see you at the picnic for fun and companionship on the 23rd.

Have a great summer and enjoy this wonderful lake and community!  

Your RLA Board

Here is a list of all RLA members as of 7/1/25.

Did you know Rainbow Lake was originally called Lake Wataba? Order a Lake Wataba T-shirt HERE! All proceeds go to the lake association.

Introducing the Spring 2025 RLA Newsletter!

You may have noticed last summer (2024) we began our Phosphorous Reduction Project with the application of a product called Phoslock. This is a three-year project approved at last year’s Annual General Meeting. 

The major cause of unsightly algae growth on our lake is an excess of phosphorous.  Over the last few years, we have done studies to show that the majority of our phosphorous comes from the lake bottom as opposed to the inlet streams. Last summer, lanthanum (a natural chemical) embedded in bentonite (a natural clay) was applied to absorb the phosphorous in the water column as well as the lake bottom. Lower concentrations of phosphorous will, overtime, lead to a healthier lake ecosystem and fewer applications of herbicides.

  We have been working directly with the Chief Scientist at the manufacturer of the product who tested our lake to determine the optimum application for our specific lake. Requests for Proposals to apply the product were sent out and we selected the best bid, which happened to be our current Lake Management team, Pond and Lake Connection.  A discussion of the selection process is on our website (see link below).

  While we hope to lessen our future dependence on, and costs of, our normal herbicide applications, this project requires funding. We had enough in our Lake Improvement Fund to cover the first year of the project (about $40,000), but will need to raise funds to continue.  

Click on the link below to see details and donate to our Phosphorous Reduction Project to make our Beautiful Lake even more healthy!

Dear Neighbors,

We now have public boats! In order to reduce the number of boats on the beaches, the RLA will now have four RLA member boats on Crescent Beach. They have “RLA” stenciled on the side and we have both kayaks and canoes. We will put some life preservers in the beach shed and a few paddles, but we encourage members to bring their own paddles and life preservers. This is the first year we have tried it, and, if successful, we will add some more boats. Please be courteous and return the boats, paddles and life vests to Crescent Beach after use.

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Longtime Rainbow Lake resident & accomplished photographer Marty Gold has taken some incredible shots of our lake. Check them out at https://martingold.smugmug.com/Rainbow-Lake!