Морена запрудила путь стока воды, и образовалось моренное озеро. Для перевода нужен широкий контекст - совсем не обязательно переводить каждое слово в отдельности. Another and more extensive system of Wisconsin glacial lakes developed south of the Shelbyville moraine as a result of the ponding of the tributary valleys by the extensive valley trains built down the streams which acted as sluiceways for Wisconsin melt-waters. Lacustrine plains of this origin are extensively developed along the tributaries of the Wabash, Ohio, and White Rivers.
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