Cyanobacteria Alert Issued for Blackey Cove (Moultonborough)

Lakegeezer · 11-14-2023, 09:06 AM

While giving a nod to the gross factor, keep the urine problem in perspective. If an acre of water, 10 feet deep, had the state maximum phosphorus level (8 parts/billion), it would take 40,000 average doses of pee to bring it up to 10 parts/billion, where algae blooms start to happen. There are other phosphorus sources of course, but headless weekender contributions are insignificant compared to the impact of the boats they arrive in. Prop wash and boat wake add measurable phosphorus to the water column by stirring up bottom sediment, where centuries of nutrient deposits reside.

John Mercier · 11-14-2023, 12:48 PM

And the Legislature will have a tough time dealing with that issue from a statutory point.

So stopping the addition of the nutrients, and stopping the agitation of the existing sequestered nutrients, is a much bigger issue than our Legislature is willing to face.

The lakes that have the least amount of shorefront development, the most bath houses around them, and the least amount of motorized traffic should fair the best... but even that is only the amount of time.

We simply ''love'' our lakes to death.

11-14-2023, 09:06 AM	#1
Lakegeezer Senior Member Join Date: Feb 2003 Location: Moultonboro, NH Posts: 1,692 Blog Entries: 1 Thanks: 356 Thanked 646 Times in 294 Posts	Concentration perspective While giving a nod to the gross factor, keep the urine problem in perspective. If an acre of water, 10 feet deep, had the state maximum phosphorus level (8 parts/billion), it would take 40,000 average doses of pee to bring it up to 10 parts/billion, where algae blooms start to happen. There are other phosphorus sources of course, but headless weekender contributions are insignificant compared to the impact of the boats they arrive in. Prop wash and boat wake add measurable phosphorus to the water column by stirring up bottom sediment, where centuries of nutrient deposits reside. __________________ -lg

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11-14-2023, 12:48 PM	#2
John Mercier Senior Member Join Date: Jun 2021 Posts: 3,991 Thanks: 3 Thanked 680 Times in 562 Posts	And the Legislature will have a tough time dealing with that issue from a statutory point. So stopping the addition of the nutrients, and stopping the agitation of the existing sequestered nutrients, is a much bigger issue than our Legislature is willing to face. The lakes that have the least amount of shorefront development, the most bath houses around them, and the least amount of motorized traffic should fair the best... but even that is only the amount of time. We simply ''love'' our lakes to death.