Lake Ivanhoe (also known as Round Pond) is located in
Carroll County, New Hampshire, in the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
. The lake has no traditional inlets or outlets. Historically, a small stream drained Lake Ivanhoe to
Great East Lake
Great East Lake is an water body located in Carroll County, New Hampshire, and York County, Maine, in the United States. The lake is shared by the towns of Wakefield, New Hampshire, and Acton, Maine, with 45% of its surface area in Acton and 55% ...
, but construction filled in that stream many years ago and now drainage flows via groundwater to Great East Lake.
Lake Ivanhoe is classified as "Potentially Impaired" according to the New Hampshire Department of Environmental Services water quality parameters. Lake Ivanhoe receives this designation due to its in-lake phosphorus concentration which exceeds the water quality standards for oligotrophic lakes. The Lake Ivanhoe watershed is and is 64% forested. The watershed is currently 17%, developed with 59% of the watershed being buildable area. The Lake Ivanhoe shoreline is primarily composed of low density residential houses and camps (66%). The majority of these structures (88%) are within 50 feet of the water's edge.
Lake Ivanhoe water quality monitoring has been collected since 1981. During this period, 16 years of secchi disk transparency data, 17 years of total phosphorus (TP) data, 16 years of chlorophyll-a (Chl-a) data, and 14 years of dissolved oxygen (DO) data have been collected. From this data, the median TP concentration is 8.0 parts per billion (ppb) and the mean transparency is .
See also
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List of lakes in New Hampshire
This is a list of lakes and ponds in the U.S. state of New Hampshire. The New Hampshire Department of Environmental Services lists 944 lakes and impoundments in their ''Official List of Public Waters''. The water bodies that are listed include natu ...
References
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Ivanhoe
''Ivanhoe: A Romance'' () by Walter Scott is a historical novel published in three volumes, in 1819, as one of the Waverley novels. Set in England in the Middle Ages, this novel marked a shift away from Scott’s prior practice of setting st ...
Ivanhoe
''Ivanhoe: A Romance'' () by Walter Scott is a historical novel published in three volumes, in 1819, as one of the Waverley novels. Set in England in the Middle Ages, this novel marked a shift away from Scott’s prior practice of setting st ...