Undeveloped grassland is the dominant land type with small residential areas that use individual septic systems. It is connected to Gibbs Pond by Phillips Run through a series of wetlands. The watershed contains undisturbed wetland and upland areas, managed golf course, residential development on septic systems, and agriculture.
Most of the extensive wetland system is an actively managed commercial cranberry bog. The watershed recharge area is close to times larger than the pond itself. Nutrient loading and pesticide runoff are pollutant risks to Tom Nevers Pond. Skip to content. Long Pond Watershed Long Pond stretched from the southwest shoreline almost to the north shore of the island.
Miacomet Pond Watershed Miacomet Pond is a 37 acre water body, while its surrounding watershed is 26 times larger than the pond itself at approximately 1, acres.
Ocean Watershed Portions of the island not included in other watersheds are areas which contribute to the greater ocean watershed. Sesachacha Pond Watershed Sesachacha Pond is opened to the ocean each spring and fall for anadromous fish populations, and to allow an exchange of water. English Spanish. Nantucket Land Council. Subscribe Now. In the Environmental Protection Agency designated Nantucket as a sole source aquifer, prompting guidelines for better management and protection of our water supply.
According to water company officials, there is plenty of water for the island; it is the quality of it that we must protect. Alternatively, you could contact a private service to conduct the well water testing for you. Testing water quality is not only important for health and safety reasons, it is a requirement of the Board of Health. In island areas defined as nitrogen-sensitive Nantucket Harbor Watershed, Madaket Harbor Watershed, Hummock Pond Watershed, Miacomet Pond, Sesachacha pond, and Wellhead Protection areas , all potable water wells shall be tested on years that end with odd numbers i.
For properties located outside of defined nitrogen-sensitive areas, potable water wells should be tested on years that end with even numbers i. First, you need to determine if your property is an area that is close to a water main.
The water mains are identified in blue as in the picture below. The next best step would be to contact Wannacomet Water Company to confirm the location and availability to tie into a nearby water main.
Land subsidence occurs in nearly every state of the United States. The opposite of subsidence is uplift, which results in an increase in elevation. In fact, most of New England at one time was undergoing isostasy which is one of my favorite scientific terms.
This is the opposite of subsidence and causes uplift of the land, which results in an increase in elevation. Glacial isostasy is the process of lithospheric depression beneath the weight of an ice sheet and subsequent rebound when the ice mass is reduced or removed. When we were covered in ice, it pushed the land down with its weight and when that ice retreated, the land started bouncing back, slowly rising over thousands of years.
Glacial eustasy, on the other hand, refers to worldwide changes in sea level as a consequence of changing volume of glacier ice on land. Both glacial isostasy and eustasy are related to the volume—thickness and areal coverage— of ice sheets. You may remember from school that our continents float around on top of a plastic fluid asthenosphere just like ice cubes in a drink or logs in a river.
The asthenosphere is a portion of the upper layer just below the lithosphere that is involved in plate tectonic movement and isostatic adjustments. If mass is added to a local area of the crust e.
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