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 6,951–7,000 of 15,611
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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 |
|---|---|---|---|
| Lake Margrethe | MI | Not Supporting | 2 |
| Lake Mariam | FL | Fully Supporting | 0 |
| Lake Marian | FL | Not Supporting | 3 |
| Lake Marianna | FL | Not Supporting | 2 |
| Lake Marie | FL | Not Supporting | 1 |
| Lake Marie | FL | Fully Supporting | 0 |
| Lake Marie | MO | Not Supporting | 1 |
| Lake Marion | FL | Not Supporting | 4 |
| Lake Marion | FL | Not Supporting | 1 |
| Lake Marion | FL | Not Supporting | 1 |
| Lake Markham | FL | Fully Supporting | 0 |
| Lake Martha | FL | Fully Supporting | 0 |
| Lake Martha | FL | Not Supporting | 1 |
| Lake Martin | FL | Fully Supporting | 0 |
| Lake Mary | FL | Not Supporting | 1 |
| Lake Mary | FL | Fully Supporting | 0 |
| Lake Mary | IN | Not Supporting | 1 |
| Lake Mary | MI | Not Supporting | 2 |
| Lake Mary | WI | Fully Supporting | 0 |
| Lake Mary | WI | Fully Supporting | 0 |
| Lake Mary (Lower) | AZ | Not Supporting | 1 |
| Lake Mary (Upper) | AZ | Not Supporting | 1 |
| Lake Mary Gem | FL | Fully Supporting | 0 |
| Lake Mary Jane | FL | Not Supporting | 5 |
| Lake Mary Jess | FL | Fully Supporting | 0 |
| Lake Mary Ronan | MT | Not Supporting | 1 |
| Lake Mascuppic | MA | Not Supporting | 3 |
| Lake Maskenozha-02040104002492 | PA | Not Supporting | 1 |
| Lake Massasecum - Camp Piesaule Beach | NH | Not Supporting | 1 |
| Lake Massasecum - French's Park Town Beach | NH | Not Supporting | 1 |
| Lake Massasecum - Massasecum Casino Beach | NH | Not Supporting | 1 |
| Lake Mattawa | MA | Not Supporting | 1 |
| Lake Matthews | IL | Not Supporting | 1 |
| Lake Mattie | FL | Not Supporting | 2 |
| Lake Maude | FL | Fully Supporting | 0 |
| Lake Maumelle | AR | Not Supporting | 1 |
| Lake May | FL | Not Supporting | 3 |
| Lake May | FL | Fully Supporting | 0 |
| Lake Mcbride | FL | Not Supporting | 2 |
| Lake Mccoy | FL | Not Supporting | 1 |
| Lake Mcleod | FL | Not Supporting | 3 |
| Lake Mead | NV | Fully Supporting | 0 |
| Lake Meade (PWS) | VA | Not Supporting | 2 |
| Lake Meade State Park | KS | Not Supporting | 5 |
| Lake Meade-02050306002278 | PA | Not Supporting | 2 |
| Lake Meahagh | NY | Not Supporting | 1 |
| Lake Medora | MI | Not Supporting | 2 |
| Lake Mendota | WI | Not Supporting | 1 |
| Lake Menomin | WI | Not Supporting | 1 |
| Lake Menzie | FL | Fully Supporting | 0 |
Source: EPA ATTAINS and USGS National Water Information System State Integrated Report assessment decisions + USGS daily values · 2026