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 1,651–1,686 of 1,686 starting with S
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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 |
|---|---|---|---|
| Swenson | MN | Not Supporting | 1 |
| Swenson | MN | Not Supporting | 1 |
| Swet Lake | ID | Fully Supporting | 0 |
| Swift Creek #2 Power Canal | WA | Not Supporting | 1 |
| Swift Creek (Woodruff Lake) | AL | Fully Supporting | 0 |
| Swift Creek Lake | VA | Not Supporting | 1 |
| Swift Creek Pond | FL | Not Supporting | 1 |
| Swift Creek Reservoir | VA | Not Supporting | 1 |
| Swiftwater Lake-02040104002578 | PA | Not Supporting | 1 |
| Swimm Lake | ID | Fully Supporting | 0 |
| Swimming Dam-02050106002837 | PA | Not Supporting | 2 |
| Swimming River Reservior / Slope Bk | NJ | Not Supporting | 6 |
| Swinging Bridge Reservoir | NY | Not Supporting | 1 |
| Swofford Pond | WA | Not Supporting | 1 |
| Sybil | MN | Not Supporting | 1 |
| Sycamore Lake | IL | Not Supporting | 2 |
| Sylvan | IL | Not Supporting | 3 |
| Sylvan | MN | Not Supporting | 1 |
| Sylvan (Main Basin) | MN | Not Supporting | 1 |
| Sylvan (North Basin) | MN | Not Supporting | 1 |
| Sylvan (Northeast Bay) | MN | Not Supporting | 1 |
| Sylvan (Southwest Bay) | MN | Not Supporting | 1 |
| Sylvan Lake | IN | Not Supporting | 1 |
| Sylvan Lake | MA | Not Supporting | 2 |
| Sylvan Lake | MI | Not Supporting | 2 |
| Sylvan Lake | MI | Not Supporting | 1 |
| Sylvan Lake | NY | Not Supporting | 1 |
| Sylvan Lake | SD | Not Supporting | 1 |
| Sylvan Lake | WI | Not Supporting | 1 |
| Sylvan Lake Ferndale Beach | MI | Not Supporting | 1 |
| Sylvan Lake Sylvan Shores Improvement Association Beach | MI | Not Supporting | 1 |
| Sylvania | MN | Not Supporting | 1 |
| Sylvestri Pond | MA | Not Supporting | 1 |
| Sylvia | MN | Fully Supporting | 0 |
| Sylvia Lake | AR | Not Supporting | 1 |
| Sympson Lake | KY | Fully Supporting | 0 |
Source: EPA ATTAINS and USGS National Water Information System State Integrated Report assessment decisions + USGS daily values · 2026