Browse lakes and reservoirs

Named lake-type waterbodies with a populated record: assessment verdicts, listed impairment causes, or a linked USGS gauge. Data updated 2026-08-17.

Waterbodies

Showing 8,851–8,900 of 15,611

WaterbodyStateStatusCauses
Marsh Road Pond NH Not Supporting 1
Marshall MN Not Supporting 1
Marshall Lake FL Not Supporting 4
Marshall Lake WA Not Supporting 1
Marshall Pond NH Not Supporting 2
Marshan MN Not Supporting 1
Marston Pond NH Not Supporting 2
Marten Lake MI Not Supporting 1
Martha Lake WI Fully Supporting 0
Martin MN Not Supporting 2
Martin Creek Reservoir TX Fully Supporting 0
Martin Dam NH Not Supporting 1
Martin Lake MI Not Supporting 1
Martin Lake (Ohem Lake) CO Not Supporting 2
Martin Lake (Put & Take Trout) IN Fully Supporting 0
Martin Meadow Pond NH Not Supporting 5
Martin; VT Fully Supporting 0
Martinez Lake AZ Fully Supporting 0
Martins VT Fully Supporting 0
Martins VT Fully Supporting 0
Martins Fork Lake KY Fully Supporting 0
Martins Pond MA Not Supporting 5
Martinsville (Beaver Creek) Reservoir VA Not Supporting 1
Mary MN Not Supporting 2
Mary MN Not Supporting 1
Mary MN Not Supporting 2
Mary MN Not Supporting 1
Mary MN Not Supporting 1
Mary Lake WI Fully Supporting 0
Mary Lee IL Not Supporting 2
Mary's Lake KS Not Supporting 3
Marys Brook - Marys Pond Dam NH Not Supporting 1
Marys Pond MA Not Supporting 1
Mascoma Lake NH Not Supporting 5
Mascoma Lake - Crescent Beach NH Not Supporting 1
Mascoma Lake - Dartmouth College Beach NH Not Supporting 2
Mascoma Lake - Lakeview Condominium Association Beach NH Not Supporting 1
Mascoma Lake - Shakoma Beach NH Not Supporting 2
Mascoma River NH Not Supporting 1
Mascoma River NH Not Supporting 2
Mascoma River - Baltic Mills Dam Pond NH Not Supporting 1
Mascoma River - Glen Road Dam NH Not Supporting 2
Mascoma River - Plant No 1 Dam NH Not Supporting 1
Mascoma River - Rivermill NH Not Supporting 2
Mascot Pond NH Not Supporting 1
Mashapaug Lake (Union) CT Fully Supporting 0
Mashapaug Pond RI Not Supporting 5
Mashkenode MN Not Supporting 2
Mashpee Pond MA Not Supporting 3
Maskenthine Reservoir NE Not Supporting 5

Source: EPA ATTAINS and USGS National Water Information System State Integrated Report assessment decisions + USGS daily values · 2026