Wednesday, August 17: Healthy Lake Boon update via Zoom

As part of a Sustainable Stow / Randall Library program on water quality, you can hear the latest from the Healthy Lake Boon project. Speakers are Dave Gray and Dan Barstow. The talk starts on Zoom at 7 p.m. and you can register at this link:

Also on the program, PFAS contamination of wells. Speakers are Mary Jude Pigsley, Regional Director of MassDEP’s Worcester office and Timothy Maus, a geologist specializing in the assessment and mitigation of PFAS in private wells.

Lost and found items

This double float was lost from Pine Point Road a few days ago. If you have found it, please leave a comment and we will put you in touch with the owner.

These life vests were found floating in the 1st Basin near Pine Point. The black vest is an XL adult, and the red is a youth size. They were taken by the finder to Monahan’s Cove and can be left somewhere accessible by water or car on Temple Avenue for the owners. Again, leave a comment if they’re yours and we’ll put you in touch with the person who found them.

Stow Town Beach officially reopening

See statement below from the Nashoba Associated Board of Health. Nevertheless, keep a watch in other parts of the lake for algae blooms. There is a thick one now in the Hale Road cove at the east end of the second basin.

Hello everyone,

This office received the second lab report indicating the algae cell counts are below the DPH guidance, and an inspection of the town beach this morning finds the water to be clear. The test results and inspection allows the Board of Health to lift the beach closure, the beach can reopen for swimming.

Any closure signs at the beach can be removed.

Jim Garreffi, Director

Nashoba Associated Board of Health
30 Central Ave
Ayer, MA 01432

Upcoming events! Music, environment and schedule of events for the Water Carnival

There’s lots going on between now and Labor Day weekend. Note that these are the corrected dates for Water Carnival events.

Saturday, August 13 – approx 2:00 p.m., Open Mike shoreside concert at 130 Barton Road next to the dam, compliments of the Conleys

Sunday, August 14 – Hard Knox shoreside concert CANCELLED due to health issues

Wednesday, August 17 – 7:00 p.m., Healthy Lake Boon Update by Zoom as part of a Sustainable Stow / Randall Library program on water quality including PFAS contamination of wells. Speakers are Mary Jude Pigsley, Regional Director of MassDEP’s Worcester office, Timothy Maus, a geologist specializing in the assessment and mitigation of PFAS in private wells, and Dan Barstow and Dave Gray from the Healthy Lake Boon project. .Register for this session here

September 2 – 5: the Lake Boon Association Water Carnival! Plan your Boat Parade theme now! (pizza coupon for entering)

Friday, September 2 – 7:30 p.m. Lighting of the Lake and Music Boat, beginning in the first (northern) basin, going CCW around the lake

Saturday, September 3

  • 9:30 a.m. – Canoe races, field events at Pine Bluffs Town Beach
  • 12:00 p.m. – grilled lunch and children’s entertainment.
  • 1:30 p.m. – beach events, swimming races (algae conditions permitting)

Sunday, September 4

  • 10:00 a.m. Historical boat tour, registration required at, embarkation location tbd
  • 2:15 p.m. – Boat Parade beginning at the narrows buoy in the first basin and going CCW around the lake

Monday, September 5, 2:30 p.m. – Sailing Regatta gathering at Pine Point buoy across from Town Beach

Lake Boon Commission meets Wednesday, August 3

The Lake Boon Commission will meet Wednesday, Augsut 3 at 7 p.m. on Zoom. Participation via calling in or using your computer is encouraged. For instructions on how to connect, please see the posted agenda on the Town of Hudson website, here.

Agenda Topics:

  1. Welcome and orient new LBC member Dan Tereau
  2. Public Comment
  3. Meeting Minutes – Review/Approve
  4. Bills for Payment – Review/Approve
  5. Review LBA signs being posted around the lake
  6. Old Business
  7. New Business
  8. Date of Next Meeting
  9. Adjourn

Lake Boon algae update

Early this morning algae blooms were observed by neighbors in several places around the lake, often in windward shallow coves. A board of health representative observed at 7 a.m. this morning that the Pine Bluffs Town Beach still had excessive algae to a degree that it should remain closed and wasn’t even worth testing until Monday.

By the time an unofficial quick LBA test could be made at 11 a.m. most of the blooms were more diffuse due to wind and waves. Nevertheless, a sample taken then at the east end of the second basin in front of Hale Road showed cyanotoxins still present. Therefore residents should be wary of any algae blooms or places where they have been in the last day or so. Again, small children and dogs are especially vulnerable as they are more likely to ingest the water. Entertaining small children in the heat may better be done with a well water fed sprinkler.

Healthy Lake Boon signs available

The Healthy Lake Boon team thanks the many volunteer citizen scientists who helped with our study of the health of the lake! Watershed residents should now have received a brochure summarizing our findings.

As evidenced by the return of algae blooms this summer we need to build and maintain awareness and action, which can be done partly by posting signs around the lake. There are three designs of signs.


  1. “Enjoy your lake home”
  2. “Enjoy our wonderful lake”
  3. “Enjoy your boat”

There are 50 of each, so pick your favorite. Send an email to:, with your address, and we’ll drop off the sign at your home to post anywhere on your property – street, lake front or wherever people will see it. We’re also putting signs at the boat launch and beach.

Thanks everyone for helping keep lake Boon healthy and beautiful!

P.S. – for the motorboaters among us, “No wakes within 150 ft of shore, swimmers, boats” is short-hand for “Please don’t generate sizable wakes within 150 ft of . . .”

Algae bloom – Stow Town Beach closed

Due to a dense brown-black algae bloom accumulated at the town beach this morning, it has been closed to swimming. An unofficial Blue-Green rapid test this noon showed that cyanotoxins are likely present in that area. The Stow Board of Health will be doing further testing. Be on the lookout for and avoid algae blooms in your area of the lake if considering swimming. This especially applies to young children and dogs, which are very likely to ingest water and could get very sick. See and save the Massachusetts Department of Public Health bulletin at the end of this post for more information. 

We are likely to have more algae blooms occur this year with the high temperatures and drought conditions. If you see a bloom in your area please take a photo and email it along with notes on the date, time, location, extent, approx wind speed/direction, etc. to The Lake Boon Association will attempt to keep Boonies informed of changing conditions. The LBA cannot say when or where it is safe to swim. It can only help enable individuals to make better informed decisions.

If you have neighbors who are not on-line for these notices, please make them aware of the potential hazards going forward.

Remember that the long term solution to reducing the frequency of algae blooms is to reduce phosphorus entering the lake from fertilizers, poorly maintained septic systems, pet waste, dish washing and car washing detergents, etc.