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 51–100 of 269 starting with O

WaterbodyStateStatusCauses
Ohio St. Beach IL Not Supporting 3
Ohop Lake WA Not Supporting 3
Oiger Ponds CA Not Supporting 1
Oilmont Wetland MT Not Supporting 3
Ojibway MN Not Supporting 2
Okabena MN Not Supporting 1
Okamanpeedan MN Not Supporting 1
Okatuppa Creek (Coffeeville Lake) AL Fully Supporting 0
Okauchee Lake WI Not Supporting 1
Okeeheelee Park FL Fully Supporting 0
Okemah Lake OK Not Supporting 1
Okmulgee Lake OK Not Supporting 2
Olamon Stream ME Fully Supporting 0
Olamon Stream ME Fully Supporting 0
Olathe Waterworks Lakes KS Not Supporting 1
Old Alexandria Reservoir KY Not Supporting 1
Old Elk Lake WI Not Supporting 2
Old Hickory Reservoir TN Fully Supporting 0
Old Lake IN Fully Supporting 0
Old Lake MO Not Supporting 3
Old Lake Davenport FL Not Supporting 1
Old Maids Brook - Mclaughlin Dam NH Not Supporting 1
Old Maids Brook - Spit Brook NH Not Supporting 1
Old Man Lakes ID Fully Supporting 0
Old Marsh VT Fully Supporting 0
Old Marsh VT Fully Supporting 0
Old Mill IL Not Supporting 2
Old Miller Pond Dam NH Not Supporting 1
Old Millpond NH Not Supporting 1
Old Oak IL Not Supporting 1
Old Oaken Bucket Pond MA Not Supporting 3
Old Reservoir MA Not Supporting 1
Old River - Car Barn Pond NH Not Supporting 1
Old School IL Not Supporting 2
Old Taylor Lake WI Not Supporting 1
Old Town Lake AR Not Supporting 1
Old Town Pond NY Not Supporting 1
Old Womans Creek VA Not Supporting 1
Oldham Lake IA Fully Supporting 0
Oldham Pond MA Not Supporting 3
Oldmans Creek (above Commissioners Rd) NJ Not Supporting 3
Oldmans Creek (Kings Hwy to Rt 45) NJ Not Supporting 5
Oldmans Creek (Rt45 to Commissioners Rd) NJ Not Supporting 2
Ole MN Not Supporting 1
Olin Basin AL Not Supporting 2
Olin Lake IN Not Supporting 1
Olive Creek Lake NE Not Supporting 5
Oliver (east portion) MN Not Supporting 2
Oliver (west portion) MN Not Supporting 2
Oliver Lake GA Not Supporting 3

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