| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
801  | Swiftcurrent Lake  | United States, Montana Glacier | lake elevation 1488m | N 48° 47′ 43'' | W 113° 39′ 41'' |
| 802 | Siltcoos Lake Siltcoos Lake,Tsiltcoos Lake | United States, Oregon Lane | lake elevation 4m | N 43° 52′ 33'' | W 124° 5′ 23'' |
| 803 | Silver Lake Kalpshi,Silver Lake | United States, Oregon Lake | lake elevation 1318m | N 43° 5′ 46'' | W 120° 53′ 17'' |
| 804 | Sparks Lake | United States, Oregon Deschutes | lake elevation 1656m | N 44° 0′ 58'' | W 121° 44′ 38'' |
| 805 | Strawberry Lake | United States, Oregon Grant | lake elevation 1910m | N 44° 18′ 25'' | W 118° 41′ 7'' |
| 806 | Sturgeon Lake | United States, Oregon Multnomah | lake elevation 3m | N 45° 43′ 2'' | W 122° 48′ 31'' |
| 807 | Summer Lake | United States, Oregon Lake | lake elevation 1265m | N 42° 49′ 10'' | W 120° 44′ 33'' |
| 808 | Summit Lake | United States, Oregon Clackamas | lake elevation 1275m | N 45° 1′ 53'' | W 121° 47′ 16'' |
| 809 | Suttle Lake Settle Lake,Suttle Lake,Suttles Lake | United States, Oregon Jefferson | lake elevation 1049m | N 44° 25′ 17'' | W 121° 44′ 27'' |
| 810 | Sutton Lake | United States, Oregon Lane | lake elevation 10m | N 44° 3′ 26'' | W 124° 5′ 32'' |
| 811 | Silver Lake Silver Lake,Toutle Lake | United States, Washington Cowlitz | lake elevation 149m | N 46° 17′ 40'' | W 122° 47′ 12'' |
| 812 | Simmons Lake Ken Lake,Simmons Lake | United States, Washington Thurston | lake elevation 44m | N 47° 1′ 57'' | W 122° 57′ 2'' |
| 813 | Snoqualmie Lake | United States, Washington King | lake elevation 960m | N 47° 33′ 59'' | W 121° 24′ 46'' |
| 814 | Snow Lake | United States, Washington Lewis | lake elevation 1427m | N 46° 45′ 26'' | W 121° 41′ 51'' |
| 815 | Soap Lake Le-to-to-weints,Sanitarium Lake,Smokiam,Soap Lake | United States, Washington Grant | lake elevation 329m | N 47° 24′ 20'' | W 119° 29′ 46'' |
| 816 | South Cascade Lake | United States, Washington Skagit | lake elevation 1614m | N 48° 22′ 17'' | W 121° 4′ 7'' |
| 817 | Southwick Lake | United States, Washington Thurston | lake elevation 59m | N 47° 0′ 17'' | W 122° 48′ 16'' |
| 818 | Spirit Lake | United States, Washington Skamania | lake elevation 1040m | N 46° 16′ 22'' | W 122° 8′ 25'' |
| 819 | Sprague Lake Big Lake,Colville Lake,Lake Colville,Silkatkwu,Sprague Lake | United States, Washington Adams | lake elevation 574m | N 47° 15′ 35'' | W 118° 3′ 56'' |
| 820 | Stansberry Lake Lewis Lake,Stansberry Lake,Stansbury Lake | United States, Washington Pierce | lake elevation 71m | N 47° 23′ 11'' | W 122° 43′ 40'' |
| 821 | Steigerwald Lake Herzog's Lake,Herzogs Lake,Shepherds Lake,Steigerwald Lake,Steigerwald Slough,Steigerwalds Lake | United States, Washington Clark | lake elevation 7m | N 45° 34′ 2'' | W 122° 18′ 14'' |
| 822 | Stout Lake | United States, Washington Skagit | lake elevation 1592m | N 48° 35′ 28'' | W 121° 11′ 46'' |
| 823 | Sulphide Lake | United States, Washington Whatcom | lake elevation 1160m | N 48° 48′ 17'' | W 121° 35′ 2'' |
| 824 | Sunday Lake | United States, Washington Snohomish | lake elevation 66m | N 48° 13′ 44'' | W 122° 15′ 27'' |
| 825 | Sunwood Lake | United States, Washington Thurston | lake elevation 76m | N 46° 58′ 11'' | W 122° 46′ 25'' |
| 826 | Surprise Lake | United States, Washington Pierce | lake elevation 96m | N 47° 14′ 47'' | W 122° 18′ 5'' |
| 827 | Lake Sutherland Lake Sutherland,Shuecraft Lake | United States, Washington Clallam | lake elevation 161m | N 48° 4′ 40'' | W 123° 42′ 30'' |
| 828 | Takhlakh Lake Tac-a-lak Lake,Takhlakh Lake,Takhlakh Pond | United States, Washington Skamania | lake elevation 1338m | N 46° 16′ 41'' | W 121° 35′ 47'' |
| 829 | Thornton Lakes | United States, Washington Whatcom | lake elevation 1437m | N 48° 41′ 16'' | W 121° 19′ 57'' |
| 830 | Tipsoo Lake | United States, Washington Pierce | lake elevation 1615m | N 46° 52′ 9'' | W 121° 31′ 2'' |
| 831 | Toad Lake Emerald Lake,Toad Lake | United States, Washington Whatcom | lake elevation 219m | N 48° 47′ 28'' | W 122° 23′ 42'' |
| 832 | Lake Toke Tie Lake Take Tie,Lake Take-tie,Lake Toke Tie,Lake Toke-Tie,Toke-Tie Lake | United States, Washington Skamania | lake elevation 1432m | N 45° 59′ 30'' | W 121° 47′ 24'' |
| 833 | Tomyhoi Lake Put-hish-go-hap Lake,Puthishgohap Lake,Puthishgohop Lake,Tamihi Lake,Taminy Lake,Tomyhoi Lake,Tummea... | United States, Washington Whatcom | lake elevation 1136m | N 48° 58′ 28'' | W 121° 40′ 52'' |
| 834 | Totem Lake Juanita Lake,Mud Lake,Totem Lake,Watstine Lake,Wittenmeyer Lake | United States, Washington King | lake elevation 40m | N 47° 42′ 39'' | W 122° 10′ 34'' |
| 835 | McIntosh Lake Clear Lake,McIntosh Lake | United States, Washington Thurston | lake elevation 102m | N 46° 52′ 2'' | W 122° 46′ 0'' |
| 836 | McKenzie Lake | United States, Washington Thurston | lake elevation 100m | N 46° 56′ 15'' | W 122° 36′ 49'' |
| 837 | Melakwa Lake Mel '-a-kwa Lake,Melakwa Lake | United States, Washington King | lake elevation 1373m | N 47° 27′ 0'' | W 121° 28′ 7'' |
| 838 | Lake Meridian Cow Lake,Lake Meredian,Lake Meridian,Meridian Lake | United States, Washington King | lake elevation 114m | N 47° 21′ 46'' | W 122° 9′ 10'' |
| 839 | Merrill Lake | United States, Washington Cowlitz | lake elevation 465m | N 46° 5′ 38'' | W 122° 19′ 26'' |
| 840 | Monogram Lake | United States, Washington Skagit | lake elevation 1487m | N 48° 33′ 24'' | W 121° 16′ 49'' |
| 841 | Mowich Lake Crater Lake,Mowich Lake | United States, Washington Pierce | lake elevation 1505m | N 46° 56′ 17'' | W 121° 51′ 43'' |
| 842 | Munn Lake | United States, Washington Thurston | lake elevation 44m | N 46° 59′ 6'' | W 122° 52′ 45'' |
| 843 | Murphy Lakes | United States, Washington King | lake elevation 1445m | N 47° 41′ 2'' | W 121° 7′ 50'' |
| 844 | Lake Murphy | United States, Washington King | lake elevation 1447m | N 47° 41′ 1'' | W 121° 7′ 47'' |
| 845 | Murphy Lake | United States, Washington Douglas | lake elevation 655m | N 48° 0′ 58'' | W 119° 27′ 32'' |
| 846 | Ohop Lake Ohop Lake,Ow-hap Lake | United States, Washington Pierce | lake elevation 161m | N 46° 54′ 18'' | W 122° 16′ 23'' |
| 847 | Olallie Lake Olallie Lake,Sheep Lake | United States, Washington Skamania | lake elevation 1293m | N 46° 17′ 20'' | W 121° 36′ 59'' |
| 848 | Omak Lake | United States, Washington Okanogan | lake elevation 292m | N 48° 16′ 37'' | W 119° 23′ 32'' |
| 849 | Osoyoos Lake Forks Lake,Osooyos Lake,Osoyoos Lake,Osoyos Lake | United States, Washington Okanogan | lake elevation 279m | N 48° 58′ 39'' | W 119° 26′ 13'' |
| 850 | Ozette Lake Ka-houk,Lake Webster,Lake of the Sun,O-se-ilth,Osette Lake,Ozette Lake,Swan Lake | United States, Washington Clallam | lake elevation 10m | N 48° 5′ 41'' | W 124° 38′ 14'' |
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