Article by Pat Edelstin for The Monterey News

November 2005

Lake Garfield Watershed

In Monterey we all live in a catchment area called a watershed.    The common destination of most 
runoff ( runoff: a catchall term for fluid laden with the salts from our driveway de-icing, those chemicals
we sprayed around the  house, and the elements of  every fluid we flushed down our plumbing system) 
from our properties is the Konkapot river, and then the Housatonic.  Water is a fine solvent and is a 
carrier for all those elements, phosphorus, nitrogen and more sinister chemicals used around our homes.
For many of us in Monterey, the first stop for our runoff  is Lake Garfield.  Being in the Lake Garfield
watershed  means that everything  goes to the lake, and some of it stays there.

If you live on or anywhere along the lake shore within sight of the lake, you are reminded daily where all your liquid effluent goes. However, out of sight really is out of mind. So if you live on Hupi road, Art School Rd, Mt Hunger Rd, and any of the cross streets of that group, or Route 23 from Mt. Hunger to town center, and Tyringham Rd. up to the to of the hill--you may not think about being in the LakeGarfield watershed, or what that really means. Know it or not, the runoff finds its way in to the lake as its first stop on the way to the Housatonic. It arrives not only from the three brooks that feed Lake Garfield, but it runs through the ground, along buried rock ledges, by groundwater seepage, as well as from numerous springs and through storm drains. And that water carries those dissolved chemicals with it. There they act as extra nutrients which stimulate the plant overgrowth in the lake. Do they stay a little while and then go onover the dam and into the Konkapot? No.
Lake Garfield has a dark secret. Down in the deepest part of the lake is an abyss, about 30 feet deep, which parallels the steep side of the hill, parallel to Elephant Rock Road. It is a place where the water is always cold, and where phosphorus and other persistent chemicals of many years past live on without being passed along out of the lake. Because of the interactions with these chemicals, oxygen is used up, and fish who normally like cold water cannot live in this part of the lake mainly because they can’t breathe. Normal reactions do not occur here. When we take lake measurements, these low oxygen readings begin to show up at about 7 meters depth - approx 23 feet. Each year the current year's nutrients add to the nutrients of years past and remain to feed water plant growth. In 1994 the
Commonwealth began a comprehensive watershed initiative, setting plans in motion, then in the year 2000, with characteristic frugality, restructured its watershed planning, (read cut back) but properly kept the focus on holistic planning and management. This common sense approach tells us it is useless to throw herbicides into the waters to kill weeds while at the same time we’re loading up the groundwater with phosphorus and nitrates from runoff of homes and farms. It says that the ecosystem we need to be concerned about isn’t just the lake, it is the whole watershed.

Learn more about Loosestrife,

why and how it should be controlled and

what LGA is doing about it

 

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