Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Sheboygan Marsh 2 WP 319 Dam | Dam | 277 | Sheboygan | 43 50 60 N | 088 02 48 W |
| Sherwood 3WR1125 Dam | Dam | 303 | Adams | 44 12 12 N | 089 48 24 W |
| Sherwood Dam | Dam | 307 | Clark | 44 25 35 N | 090 22 08 W |
| Sherwood-Ryan Flowage G4559 Dam | Dam | 353 | Polk | 45 32 60 N | 092 23 01 W |
| Shopiere Dam | Dam | 247 | Rock | 42 34 24 N | 088 56 18 W |
| Shot and Hook Club E3870 Dam | Dam | 453 | Oneida | 45 33 54 N | 089 54 31 W |
| Shoulder Creek Flowage G12.575 Dam | Dam | 389 | Taylor | 45 17 18 N | 090 48 12 W |
| Sieja E-7435 Dam | Dam | 360 | Rusk | 45 23 18 N | 091 23 31 W |
| Skinaway Lake 2WP2563 Dam | Dam | 376 | Polk | 45 24 36 N | 092 09 31 W |
| Skinner Dam | Dam | 470 | Langlade | 45 11 42 N | 089 05 30 W |
| Skoyen G-9503 Dam | Dam | 305 | Trempealeau | 44 31 60 N | 091 13 31 W |
| Skunk Creek D12.185 Dam | Dam | 448 | Langlade | 45 08 12 N | 089 24 36 W |
| Slim Creek 2WP220 Dam | Dam | 385 | Washburn | 45 47 30 N | 091 35 55 W |
| Slim Creek Dam | Dam | 383 | Washburn | 45 47 29 N | 091 35 54 W |
| Smith G1997.5 Dam | Dam | 316 | Douglas | 46 19 18 N | 091 47 01 W |
| Snyder Dam | Dam | 300 | Clark | 44 34 27 N | 090 43 20 W |
| Sobieski C14690.1 Dam | Dam | 411 | Rusk | 45 38 06 N | 090 43 13 W |
| Solberg 2WP456 Dam | Dam | 450 | Price | 45 44 24 N | 090 22 49 W |
| Solberg Dam | Dam | 454 | Price | 45 44 27 N | 090 23 06 W |
| Sotak Flowage G12.575 Dam | Dam | 365 | Taylor | 45 13 54 N | 090 51 54 W |
| South Midwest Cranberry Company WP99 Dam | Dam | 306 | Burnett | 45 53 54 N | 092 02 19 W |
| South Nelson 1 D6519.1 Dam | Dam | 237 | Buffalo | 44 22 36 N | 091 56 43 W |
| South Wood County Park 2WP244 Dam | Dam | 309 | Wood | 44 21 54 N | 089 45 24 W |
| Spider Creek 2WP1403 Dam | Dam | 463 | Langlade | 45 24 42 N | 089 02 00 W |
| Spirit River Reservoir WP145 Dam | Dam | 437 | Lincoln | 45 26 20 N | 089 44 32 W |
| Splitek 3WR299 Dam | Dam | 280 | Adams | 43 59 30 N | 089 50 12 W |
| Spooner Electric Dam | Dam | 326 | Washburn | 45 49 18 N | 091 53 55 W |
| Spooner Lake WP 349 Dam | Dam | 332 | Washburn | 45 50 12 N | 091 50 13 W |
| Sprague Mather Flowage C 137.39 Dam | Dam | 287 | Juneau | 44 08 42 N | 090 11 18 W |
| Spring Creek 3 WR 878 Dam | Dam | 325 | Portage | 44 23 24 N | 089 18 24 W |
| Spring Creek 3WR213 Dam | Dam | 448 | Price | 45 34 54 N | 090 27 43 W |
| Spring Lake 3WR34 Dam | Dam | 322 | Washburn | 45 53 06 N | 091 47 01 W |
| Spring Lake E18.2 Dam | Dam | 249 | Jefferson | 42 52 50 N | 088 34 55 W |
| Springville Dam | Dam | 325 | Portage | 44 28 19 N | 089 32 50 W |
| Spruce Lake E1176.2 Dam | Dam | 476 | Oneida | 45 40 48 N | 089 35 36 W |
| Squaw Creek 2WP1486 Dam | Dam | 215 | Marinette | 45 27 06 N | 087 50 42 W |
| Squaw Creek D31.18 Dam | Dam | 457 | Price | 45 47 54 N | 090 20 49 W |
| Squaw Creek Wildlife Flowage 2WP2459 Dam | Dam | 454 | Price | 45 46 60 N | 090 21 07 W |
| Stanley Mill Dam | Dam | 329 | Chippewa | 44 57 42 N | 090 56 43 W |
| Stebbinsville WP 51 Dam | Dam | 245 | Rock | 42 50 36 N | 089 10 24 W |
| Steenhoven Dam | Dam | 445 | Taylor | 45 14 24 N | 090 27 07 W |
| Steinhorst and Coughlin G4851 Dam | Dam | 274 | Sauk | 43 25 24 N | 089 52 48 W |
| Steve Creek Water Fowl 2WP 1669 Dam | Dam | 404 | Taylor | 45 22 06 N | 090 37 13 W |
| Stevens Point 2WP43 Dam | Dam | 331 | Portage | 44 30 60 N | 089 35 18 W |
| Stiles 2WP550 Dam | Dam | 191 | Oconto | 44 51 24 N | 088 03 18 W |
| Stillwell Dam | Dam | 288 | Monroe | 43 59 25 N | 090 38 42 W |
| Stolte G-9668 Dam | Dam | 347 | Sauk | 43 28 54 N | 090 03 00 W |
| Stoughton Dam | Dam | 256 | Dane | 42 54 48 N | 089 13 06 W |
| Strozewski Dam | Dam | 293 | Monroe | 44 09 18 N | 090 26 48 W |
| Strum 2WP338 Dam | Dam | 270 | Trempealeau | 44 33 17 N | 091 23 33 W |
| Sugar Camp 1909C361 Dam | Dam | 487 | Oneida | 45 52 18 N | 089 23 42 W |
| Sugarbush Dam | Dam | 461 | Price | 45 56 18 N | 090 18 17 W |
| Suk and Cerney Flowage Dam | Dam | 281 | Juneau | 44 02 40 N | 090 10 36 W |
| Susan W Meinhardt E7773 Dam | Dam | 276 | Richland | 43 27 36 N | 090 17 48 W |
| Svetlik Milling Company Dam | Dam | 292 | Chippewa | 44 57 12 N | 091 09 01 W |
| Sweeny Pond Creek 2WP1824 Dam | Dam | 344 | Barron | 45 23 42 N | 091 56 55 W |
| Taff D2076 Dam | Dam | 264 | Columbia | 43 27 24 N | 089 16 18 W |
| Tainter 2WP1283 Dam | Dam | 398 | Rusk | 45 34 36 N | 091 27 31 W |
| Taylor Dam | Dam | 336 | Barron | 45 23 60 N | 091 50 07 W |
| Taylor Lake 2WP1482 Dam | Dam | 361 | Washburn | 46 03 36 N | 091 44 01 W |
| Theresa Marsh 2WP2537 Dam | Dam | 285 | Dodge | 43 31 30 N | 088 25 18 W |
| Thiensville 2WP535 Dam | Dam | 199 | Ozaukee | 43 13 48 N | 087 58 48 W |
| Third Marinette WP 139 Dam | Dam | 181 | Marinette | 45 06 24 N | 087 39 36 W |
| Thomas Breakey and Ray Bush G5995 Dam | Dam | 478 | Price | 45 27 60 N | 090 05 01 W |
| Thomas D H Sitz 636 Dam | Dam | 330 | Pierce | 44 50 12 N | 092 29 31 W |
| Thornapple Dam | Dam | 329 | Rusk | 45 24 39 N | 091 13 02 W |
| Thornapple WP148 Dam | Dam | 329 | Rusk | 45 24 42 N | 091 13 01 W |
| Tiger Cat 2WP255 Dam | Dam | 409 | Sawyer | 46 01 48 N | 091 14 31 W |
| Tiger Cat Dam | Dam | 412 | Sawyer | 46 01 47 N | 091 14 35 W |
| Tilden 2WP150 Dam | Dam | 281 | Chippewa | 44 59 13 N | 091 25 06 W |
| Tilleda 1885C281 Dam | Dam | 292 | Shawano | 44 48 54 N | 088 54 48 W |
| Token Creek Dam (historical) | Dam | 266 | Dane | 43 11 55 N | 089 17 30 W |
| Tomah Lake 2 WP 258 Dam | Dam | 293 | Monroe | 43 59 12 N | 090 31 00 W |
| Tomahawk 2WP320 Dam | Dam | 436 | Lincoln | 45 26 30 N | 089 43 48 W |
| Totagatic 2 WP 239 Dam | Dam | 383 | Sawyer | 46 05 60 N | 091 30 49 W |
| Totagatic Wildlife 2WP804 Dam | Dam | 380 | Washburn | 46 07 45 N | 091 33 28 W |
| Town Corners Wildlife Flowage E12.67 Dam | Dam | 408 | Price | 45 27 30 N | 090 33 31 W |
| Toycen G 5925 Dam | Dam | 331 | Barron | 45 12 60 N | 091 38 55 W |
| Trego Dam | Dam | 315 | Washburn | 45 56 51 N | 091 53 08 W |
| Trego WP220 Dam | Dam | 309 | Washburn | 45 56 54 N | 091 53 19 W |
| Tri Creek Number One 3WR1378 Dam | Dam | 328 | Monroe | 43 51 12 N | 090 37 36 W |
| Trout Lake Dam | Dam | 264 | Juneau | 43 40 46 N | 089 50 55 W |
| Trows 2WP481 Dam | Dam | 268 | Jackson | 44 26 22 N | 090 49 23 W |
| Trump Lake G12.224 Dam | Dam | 281 | Jackson | 44 15 54 N | 091 08 43 W |
| Turtle Dam | Dam | 479 | Iron | 46 04 13 N | 090 13 25 W |
| Turtle Lake 2WP845 Dam | Dam | 443 | Vilas | 46 13 42 N | 090 54 07 W |
| Twin Falls Dam | Dam | 331 | Florence | 45 52 22 N | 088 04 13 W |
| Twin Lakes 2WP264 Dam | Dam | 519 | Vilas | 46 01 18 N | 089 10 06 W |
| Twin Parks 10 D9400 Dam | Dam | 249 | Iowa | 43 05 42 N | 089 55 18 W |
| Twin Parks 12 2WP1782 Dam | Dam | 251 | Iowa | 43 00 42 N | 090 02 36 W |
| Twin Parks 3 2WP1780 Dam | Dam | 253 | Iowa | 43 01 06 N | 090 01 00 W |
| Twin Parks 4 2WP1780 Dam | Dam | 281 | Iowa | 43 01 42 N | 090 02 00 W |
| Twin Parks 6 2WP1780 Dam | Dam | 235 | Iowa | 43 02 36 N | 090 00 06 W |
| Twin Parks 7 Dam | Dam | 296 | Iowa | 43 01 12 N | 089 54 54 W |
| Twin Parks 8 2WP1781 Dam | Dam | 233 | Iowa | 43 03 42 N | 089 57 00 W |
| Twin Parks 9 D9400 Dam | Dam | 254 | Iowa | 43 03 54 N | 089 55 48 W |
| Udeys WP73 Dam | Dam | 250 | Columbia | 43 20 12 N | 089 00 36 W |
| Uihlein 3NW81804 Dam | Dam | 420 | Ashland | 46 19 60 N | 090 46 01 W |
| Upper Appleton Dam | Dam | 224 | Outagamie | 44 15 12 N | 088 24 42 W |
| Upper Balsam Lake WP92 Dam | Dam | 345 | Polk | 45 26 60 N | 092 27 01 W |
| Upper Beaver 1857c412 Dam | Dam | 270 | Dodge | 43 27 18 N | 088 50 42 W |
| Upper Brunet 2 WP 400 Dam | Dam | 423 | Sawyer | 45 53 18 N | 090 52 43 W |
| Upper Flowage 2WP988 Dam | Dam | 338 | Washburn | 45 48 36 N | 091 45 55 W |
| Upper Grandfather Falls 2WP357 Dam | Dam | 423 | Lincoln | 45 18 48 N | 089 47 06 W |
| Upper Green Lake Dam | Dam | 243 | Green Lake | 43 50 54 N | 088 57 42 W |
| Upper Horicon 2WP629 Dam | Dam | 261 | Dodge | 43 31 30 N | 088 38 42 W |
| Upper Hydro Dam | Dam | 452 | Price | 45 56 18 N | 090 26 43 W |
| Upper Mayville Dam | Dam | 278 | Dodge | 43 29 36 N | 088 32 36 W |
| Upper Nashotah Dam | Dam | 269 | Waukesha | 43 04 54 N | 088 25 54 W |
| Upper Oconto Falls WP98 Dam | Dam | 224 | Oconto | 44 52 36 N | 088 08 48 W |