Vermont's major drainage basins have been organized into 15 regions for assessment and planning purposes (see below). Information about water quality assessments and specific planning activities for each basin is available via the links below.
Hudson River Drainage Basin:
Battenkill, Hoosic, Walloomsac
Lake Champlain Drainage Basin:
Southern Lake Champlain *
Otter, Little Otter, Lewis Creeks
Northern Lake Champlain
Missisquoi Bay †
Connecticut River Drainage Basin:
Ottauquechee, Black ‡
West, Williams, Saxtons ‡
Stevens, Wells, Waits, Ompompanoosuc §
Upper Connecticut River
Lake Memphremagog Drainage Basin:
Lake Memphremagog, Coaticook, Tomifobia
* Recently consolidated into one planning basin. Was previously addressed as two separate planning basins: Poultney-Mettawee basin and Lower Lake Champlain drainages.
†Mississqoui Bay planning basin now includes the Rock and Pike Rivers.
‡Now includes some adjacent CT River direct drainages that were part of the former Basin 13, which is no longer addressed as its own planning basin.
§ Now includes some adjacent CT River direct drainages that were previously addressed as part of the Upper Connecticut River planning basin.