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 801–850 of 1,219
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All New Hampshire 2,233 Minnesota 1,939 Wisconsin 1,219 Florida 973 Michigan 776 Vermont 712 Massachusetts 678 New Jersey 588 South Carolina 473 Illinois 439 New York 428 Washington 385 Texas 323 Kansas 304 Maine 302 Alabama 263 Nebraska 250 Pennsylvania 246 California 195 Virginia 193 Idaho 186 South Dakota 176 North Dakota 174 Oklahoma 173 Missouri 170 Iowa 167 Oregon 167 Indiana 162 Rhode Island 126 Colorado 122 Kentucky 108 Georgia 98 Connecticut 97 North Carolina 92 Utah 84 Louisiana 74 Tennessee 73 Arkansas 69 New Mexico 58 Montana 52 Nevada 50 Delaware 46 Arizona 44 West Virginia 44 Maryland 37 Mississippi 14 Alaska 12 Wyoming 8 Ohio 7 Hawaii 2
| Waterbody | State | Status | Causes |
|---|---|---|---|
| O'Brien Lake | WI | Fully Supporting | 0 |
| Oconomowoc Lake | WI | Fully Supporting | 0 |
| Okauchee Lake | WI | Not Supporting | 1 |
| Old Elk Lake | WI | Not Supporting | 2 |
| Old Taylor Lake | WI | Not Supporting | 1 |
| Oneida Lake | WI | Fully Supporting | 0 |
| Oneonta Lake | WI | Not Supporting | 1 |
| Onland Lake | WI | Fully Supporting | 0 |
| Osprey Lake | WI | Fully Supporting | 0 |
| Oswego Lake | WI | Fully Supporting | 0 |
| Ottawa Lake | WI | Fully Supporting | 0 |
| Otter Lake | WI | Not Supporting | 1 |
| Otter Lake | WI | Fully Supporting | 0 |
| Otter Lake (Brown) | WI | Not Supporting | 1 |
| Otumba Park Beach | WI | Not Supporting | 1 |
| Owl Lake | WI | Not Supporting | 1 |
| Oxbow Lake | WI | Not Supporting | 2 |
| Paddock Lake | WI | Fully Supporting | 0 |
| Pages Slough | WI | Not Supporting | 2 |
| Palmer Lake | WI | Fully Supporting | 0 |
| Papoose Lake | WI | Fully Supporting | 0 |
| Pardee Lake | WI | Fully Supporting | 0 |
| Park Lake | WI | Not Supporting | 2 |
| Parker Lake | WI | Fully Supporting | 0 |
| Patrick Lake | WI | Fully Supporting | 0 |
| Patten Lake | WI | Fully Supporting | 0 |
| Paulsen Lake | WI | Fully Supporting | 0 |
| Paya Lake | WI | Fully Supporting | 0 |
| Pearl Lake | WI | Fully Supporting | 0 |
| Pecor Lake | WI | Fully Supporting | 0 |
| Pelican Lake | WI | Not Supporting | 1 |
| Pella Pond | WI | Not Supporting | 1 |
| Pennoyer Park Beach, Lake Michigan | WI | Not Supporting | 1 |
| Pensaukee Lakes | WI | Fully Supporting | 0 |
| Peppermill Lake | WI | Fully Supporting | 0 |
| Perch Lake | WI | Fully Supporting | 0 |
| Perch Lake | WI | Fully Supporting | 0 |
| Perch Lake | WI | Fully Supporting | 0 |
| Person Lake | WI | Fully Supporting | 0 |
| Peshtigo Flowage 1086 | WI | Fully Supporting | 0 |
| Pestiga Lake | WI | Fully Supporting | 0 |
| Petenwell Lake | WI | Not Supporting | 5 |
| Peters Lake | WI | Fully Supporting | 0 |
| Pewaukee Lake | WI | Fully Supporting | 0 |
| Phantom Lake | WI | Not Supporting | 1 |
| Phantom Lake | WI | Fully Supporting | 0 |
| Pickerel Lake | WI | Fully Supporting | 0 |
| Pickerel Lake | WI | Not Supporting | 1 |
| Pickerel Lake | WI | Fully Supporting | 0 |
| Pickerel Lake | WI | Not Supporting | 1 |
Source: EPA ATTAINS and USGS National Water Information System State Integrated Report assessment decisions + USGS daily values · 2026