Updated 26 Oct 2026, 9:42 pm CDT.
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145 lakes · 13,944 acres · 44 with measured depth · 15 with a public access · 12 stocked
Washington County has 145 lakes of 10 acres or more in Minnesota DNR hydrography, 101 of them named, covering 13,944 acres of water. The largest is White Bear Lake at 2,428 acres; the deepest measured is Lake Elmo at 140 ft. Minnesota DNR has a measured maximum depth for 44 lakes here. The Census counts 39 square miles of water in the county, 9% of its area.
Lake outlines and acres: Minnesota DNR hydrography (lakes, ponds and reservoirs of 10 acres or more, each counted once: a lake mapped in bays as the whole lake, a border water by its Minnesota side; 2 lakes the DNR files under no county are placed here by the Census county line). Depths: Minnesota DNR LakeFinder and lake survey contours, fetched 26 Oct 2026. County line and water area: U.S. Census TIGER. Lake data: Minnesota DNR (General Data and Software License). Not for navigation.
21 lakes in Washington County cover 100 acres or more. The 12 largest are listed here; the full register of 101 named lakes follows.
| Lake | Nearest town | Acres | Deepest | Clarity | Accesses | Last stocked |
|---|---|---|---|---|---|---|
| White Bear Lake | Birchwood Village | 2,428 | 83 ft | 12 ft | 3 | 2025 |
| Forest Lake | Forest Lake | 2,271 | 37 ft | 6 ft | 3 | 2025 |
| Big Marine Lake | Scandia | 1,799 | 60 ft | 10 ft | 3 | 2024 |
| Big Carnelian Lake | Marine on St. Croix | 457 | 66 ft | 18 ft | 1 | 2025 |
| Clear Lake | Forest Lake | 429 | 28 ft | 6 ft | 1 | 2025 |
| Oneka Lake | Hugo | 358 | 1 | |||
| Lake Elmo | Lake Elmo | 257 | 140 ft | 19 ft | 1 | 2025 |
| Bone Lake | Scandia | 221 | 30 ft | 6 ft | 1 | 2025 |
| Square Lake | Marine on St. Croix | 203 | 68 ft | 17 ft | 1 | |
| Mud Lake | Forest Lake | 179 | ||||
| Pine Tree Lake | Dellwood | 176 | 25 ft | |||
| Lake Jane | Lake Elmo | 158 | 39 ft | 17 ft | 1 |
| Lake | Nearest town | Acres | Deepest | Clarity | Accesses | Last stocked |
|---|---|---|---|---|---|---|
| White Bear Lake | Birchwood Village | 2,428 | 83 ft | 12 ft | 3 | 2025 |
| Forest Lake | Forest Lake | 2,271 | 37 ft | 6 ft | 3 | 2025 |
| Big Marine Lake | Scandia | 1,799 | 60 ft | 10 ft | 3 | 2024 |
| Big Carnelian Lake | Marine on St. Croix | 457 | 66 ft | 18 ft | 1 | 2025 |
| Clear Lake | Forest Lake | 429 | 28 ft | 6 ft | 1 | 2025 |
| Oneka Lake | Hugo | 358 | 1 | |||
| Lake Elmo | Lake Elmo | 257 | 140 ft | 19 ft | 1 | 2025 |
| Bone Lake | Scandia | 221 | 30 ft | 6 ft | 1 | 2025 |
| Square Lake | Marine on St. Croix | 203 | 68 ft | 17 ft | 1 | |
| Mud Lake | Forest Lake | 179 | ||||
| Pine Tree Lake | Dellwood | 176 | 25 ft | |||
| Lake Jane | Lake Elmo | 158 | 39 ft | 17 ft | 1 | |
| DeMontreville Lake | Pine Springs | 157 | 24 ft | 16 ft | 1 | |
| Little Carnelian Lake | Stillwater | 137 | 68 ft | |||
| Sunset Lake | Hugo | 133 | 17 ft | |||
| Rice Lake | Hugo | 125 | ||||
| Terrapin Lake | Marine on St. Croix | 122 | 5 ft | |||
| Eagle Point Lake | Lake Elmo | 110 | ||||
| Battle Creek Lake | Landfall | 106 | 15 ft | 7 ft | 1 | 2024 |
| Egg Lake | Hugo | 104 | ||||
| Long Lake | Stillwater | 102 | 22 ft | |||
| South School Section Lake | Hugo | 95 | 26 ft | |||
| Lake Keewahtin | Scandia | 92 | 34 ft | |||
| Lake Olson | Pine Springs | 87 | 15 ft | 13 ft | ||
| Lake Edith | Lake St. Croix Beach | 81 | 43 ft | |||
| Horseshoe Lake | Hugo | 78 | ||||
| Goose Lake | Scandia | 76 | 25 ft | 7 ft | 1 | |
| Horseshoe Lake | Lake Elmo | 75 | 11 ft | |||
| Tanners Lake | Landfall | 74 | 46 ft | 8 ft | 1 | 2024 |
| Long Lake | Marine on St. Croix | 71 | 12 ft | |||
| Colby Lake | Woodbury | 71 | 11 ft | 2 ft | 2024 | |
| Long Lake | Pine Springs | 63 | 34 ft | |||
| Mann Lake | Dellwood | 63 | ||||
| North Twin Lake | Stillwater | 61 | ||||
| Powers Lake | Woodbury | 58 | 41 ft | 8 ft | ||
| North School Section Lake | Hugo | 58 | 10 ft | |||
| Long Lake | Dellwood | 53 | 25 ft | |||
| White Rock Lake | Scandia | 53 | ||||
| Loon Lake | Stillwater | 53 | 15 ft | |||
| West Boot Lake | Marine on St. Croix | 50 | 34 ft | |||
| Carver Lake | Newport | 50 | 36 ft | 6 ft | 2025 | |
| Fish Lake | Scandia | 50 | ||||
| German Lake | Scandia | 49 | ||||
| Lake McKusick | Stillwater | 49 | 5 ft | |||
| Silver Lake | Stillwater | 48 | ||||
| Sand Lake | Scandia | 47 | 18 ft | |||
| East Boot Lake | Marine on St. Croix | 47 | 27 ft | |||
| Barker Lake | Hugo | 46 | ||||
| Cloverdale Lake | Oak Park Heights | 45 | 28 ft | |||
| Carol Lake | Stillwater | 45 | ||||
| Markgrafs Lake | Woodbury | 45 | ||||
| Long Lake | Scandia | 45 | ||||
| Sea Lake | Scandia | 44 | ||||
| La Lake | Newport | 44 | ||||
| Lily Lake | Stillwater | 44 | 51 ft | 12 ft | 1 | |
| Round Lake | Dellwood | 44 | ||||
| Clear Lake | Marine on St. Croix | 42 | 27 ft | |||
| Louise Lake | Grant | 41 | 8 ft | |||
| Mays Lake | Marine on St. Croix | 40 | 25 ft | |||
| O'Connors Lake | Afton | 39 | ||||
| Goose Lake | Lake Elmo | 38 | ||||
| Plaisted Lake | Hugo | 38 | 10 ft | |||
| McDonald Lake | Oak Park Heights | 37 | ||||
| Wilmes Lake | Woodbury | 36 | ||||
| Nielson Lake | Scandia | 36 | ||||
| Turtle Lake | Marine on St. Croix | 32 | ||||
| Hay Lake | Scandia | 31 | ||||
| South Twin Lake | Stillwater | 31 | ||||
| Lake Masterman | Grant | 31 | ||||
| Benz Lake | Grant | 30 | ||||
| Mud Lake | North St. Paul | 30 | ||||
| Shields Lake | Forest Lake | 30 | 27 ft | 3 ft | ||
| Long Lake | Hugo | 29 | ||||
| Sunfish Lake | Lake Elmo | 28 | ||||
| Lake Alice | Marine on St. Croix | 26 | 9 ft | 7 ft | ||
| Bass Lake | Marine on St. Croix | 26 | ||||
| Downs Lake | Lake Elmo | 25 | ||||
| Echo Lake | Dellwood | 24 | ||||
| Clear Lake | Lake Elmo | 23 | ||||
| Lost Lake | Willernie | 22 | 26 ft | 8 ft | 2025 | |
| Bass Lake | Grant | 22 | ||||
| Fish Lake | Dellwood | 21 | 34 ft | |||
| Armstrong Lake | Landfall | 21 | ||||
| Rose Lake | Lake Elmo | 20 | ||||
| Cranberry Lake | Forest Lake | 20 | ||||
| Legion Pond | Lake Elmo | 18 | ||||
| Clear Lake | Scandia | 16 | ||||
| McKean's Pond | Lakeland | 14 | ||||
| Bay Hill Pond | Dellwood | 14 | ||||
| Twin Lake | Forest Lake | 13 | ||||
| Rest Area Pond | Lakeland | 13 | ||||
| Jamee Lee Slough | Scandia | 13 | ||||
| H.J. Brown Pond | Lake Elmo | 12 | ||||
| Sunnybrook Lake | Grant | 12 | ||||
| Pat Lake | Grant | 12 | ||||
| Ria Lake | Newport | 11 | ||||
| Wojtowicz Pond | Scandia | 11 | ||||
| Friedrich Pond | Lake Elmo | 11 | ||||
| Staples Lake | Marine on St. Croix | 11 | ||||
| Rasmussen Pond | Scandia | 11 | ||||
| Wood Pile Lake | Grant | 10 |
Acres: Minnesota DNR hydrography. Nearest town: U.S. Census 2024 Gazetteer. Deepest: Minnesota DNR LakeFinder (the survey's maximum depth, else the deepest survey contour). Clarity: average measured Secchi depth, Minnesota Pollution Control Agency and volunteer readings via LakeFinder. Accesses: Minnesota DNR public water access sites. Stocking: Minnesota DNR stocking reports, by year. Fetched 26 Oct 2026.
7 names belong to more than one lake in Washington County, 20 lakes in all. The most repeated is Long Lake, with 6. Each lake is listed with its nearest town, the way people search for them.
| Name | Lakes | Which one |
|---|---|---|
| Long Lake | 6 | near Stillwater (102 acres, 22 ft); near Marine on St. Croix (71 acres, 12 ft); near Pine Springs (63 acres, 34 ft); near Dellwood (53 acres, 25 ft); near Scandia (45 acres); near Hugo (29 acres) |
| Clear Lake | 4 | near Forest Lake (429 acres, 28 ft); near Marine on St. Croix (42 acres, 27 ft); near Lake Elmo (23 acres); near Scandia (16 acres) |
| Bass Lake | 2 | near Marine on St. Croix (26 acres); near Grant (22 acres) |
| Fish Lake | 2 | near Scandia (50 acres); near Dellwood (21 acres, 34 ft) |
| Goose Lake | 2 | near Scandia (76 acres, 25 ft); near Lake Elmo (38 acres) |
| Horseshoe Lake | 2 | near Hugo (78 acres); near Lake Elmo (75 acres, 11 ft) |
| Mud Lake | 2 | near Forest Lake (179 acres); near North St. Paul (30 acres) |
Names: USGS GNIS and Minnesota DNR hydrography. Acres: Minnesota DNR hydrography; depth: Minnesota DNR LakeFinder, fetched 26 Oct 2026. Nearest town: U.S. Census 2024 Gazetteer.
2 lakes in Washington County are 75 ft deep or more by Minnesota DNR survey. Lake Elmo is the deepest at 140 ft, then White Bear Lake (83 ft), Square Lake (68 ft) and Little Carnelian Lake (68 ft). The other 57 named lakes have no measured depth on record.
Minnesota DNR LakeFinder maximum depths and lake survey contours, fetched 26 Oct 2026.
Clarity is the depth at which a black-and-white Secchi disk disappears from view. 22 lakes in Washington County have measured readings, 82 in all; the middle lake averages 8 ft. The clearest is Lake Elmo at about 19 ft, then Big Carnelian Lake (18 ft), Lake Jane (17 ft) and Square Lake (17 ft). The least clear is Colby Lake at about 2 ft. Clarity is not a test for bacteria or algae toxins.
Average of measured Secchi readings, Minnesota Pollution Control Agency and volunteers, via Minnesota DNR LakeFinder, fetched 26 Oct 2026.
Minnesota DNR lists 21 public water access sites on 15 lakes in Washington County; 20 take a boat trailer. The other 86 named lakes have no public access site in the DNR record, so their shores may be private.
| Lake | Site | Run by | Facilities |
|---|---|---|---|
| White Bear Lake | White Bear Lake, WBL Park (N) | Ramsey County | trailer launch · 2 ramps · concrete ramp · 2 docks · 40 trailer spaces · restroom |
| White Bear Lake | White Bear Lake, Matoska | City of White Bear Lake | trailer launch · 2 ramps · concrete ramp · 1 dock · 24 trailer spaces |
| White Bear Lake | White Bear Lake (S) | City of White Bear Lake | carry-in · 1 ramp · natural ramp · restroom |
| Forest Lake | Forest Lake, #3 Hagberg | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 28 trailer spaces · restroom |
| Forest Lake | Forest Lake, #2 Willow Point | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 10 trailer spaces · restroom |
| Forest Lake | Forest Lake, #1 Lakeside Park | City of Forest Lake | trailer launch · 2 ramps · concrete ramp · 2 docks · 15 trailer spaces |
| Big Marine Lake | Big Marine Lake, Co Park | Washington County | trailer launch · 2 ramps · concrete ramp · 2 docks · 30 trailer spaces · restroom |
| Big Marine Lake | Big Marine Lake (S) | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 5 trailer spaces · restroom |
| Big Marine Lake | Big Marine Lake (N) | DNR Division of Parks and Trails | trailer launch · 2 ramps · concrete ramp · 2 docks · 23 trailer spaces · restroom |
| Big Carnelian Lake | Big Carnelian Lake | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 11 trailer spaces · restroom |
| Clear Lake near Forest Lake | Clear Lake | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 19 trailer spaces · restroom |
| Oneka Lake | Oneka Lake | DNR Division of Parks and Trails | trailer launch · 1 ramp · natural ramp · 3 trailer spaces |
| Lake Elmo | Lake Elmo | Washington County | trailer launch · 1 ramp · concrete ramp · 2 docks · 20 trailer spaces · restroom |
| Bone Lake | Bone Lake | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 10 trailer spaces |
| Square Lake | Square Lake | Washington County | trailer launch · 2 ramps · concrete ramp · 1 dock · 8 trailer spaces · restroom |
| Lake Jane | Lake Jane | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 7 trailer spaces · restroom |
| DeMontreville Lake | Demontreville Lake | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 12 trailer spaces · restroom |
| Battle Creek Lake | Battle Creek Lake | City of Woodbury | trailer launch · 1 ramp · concrete ramp · 1 dock · 2 trailer spaces |
| Goose Lake near Scandia | Goose Lake | City of Scandia | trailer launch · 1 ramp · concrete ramp · 1 dock · 3 trailer spaces · restroom |
| Tanners Lake | Tanners Lake | City of Oakdale | trailer launch · 1 ramp · concrete ramp · 10 trailer spaces · restroom |
| Lake | Site | Run by | Facilities |
|---|---|---|---|
| White Bear Lake | White Bear Lake, WBL Park (N) | Ramsey County | trailer launch · 2 ramps · concrete ramp · 2 docks · 40 trailer spaces · restroom |
| White Bear Lake | White Bear Lake, Matoska | City of White Bear Lake | trailer launch · 2 ramps · concrete ramp · 1 dock · 24 trailer spaces |
| White Bear Lake | White Bear Lake (S) | City of White Bear Lake | carry-in · 1 ramp · natural ramp · restroom |
| Forest Lake | Forest Lake, #3 Hagberg | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 28 trailer spaces · restroom |
| Forest Lake | Forest Lake, #2 Willow Point | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 10 trailer spaces · restroom |
| Forest Lake | Forest Lake, #1 Lakeside Park | City of Forest Lake | trailer launch · 2 ramps · concrete ramp · 2 docks · 15 trailer spaces |
| Big Marine Lake | Big Marine Lake, Co Park | Washington County | trailer launch · 2 ramps · concrete ramp · 2 docks · 30 trailer spaces · restroom |
| Big Marine Lake | Big Marine Lake (S) | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 5 trailer spaces · restroom |
| Big Marine Lake | Big Marine Lake (N) | DNR Division of Parks and Trails | trailer launch · 2 ramps · concrete ramp · 2 docks · 23 trailer spaces · restroom |
| Big Carnelian Lake | Big Carnelian Lake | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 11 trailer spaces · restroom |
| Clear Lake near Forest Lake | Clear Lake | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 19 trailer spaces · restroom |
| Oneka Lake | Oneka Lake | DNR Division of Parks and Trails | trailer launch · 1 ramp · natural ramp · 3 trailer spaces |
| Lake Elmo | Lake Elmo | Washington County | trailer launch · 1 ramp · concrete ramp · 2 docks · 20 trailer spaces · restroom |
| Bone Lake | Bone Lake | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 10 trailer spaces |
| Square Lake | Square Lake | Washington County | trailer launch · 2 ramps · concrete ramp · 1 dock · 8 trailer spaces · restroom |
| Lake Jane | Lake Jane | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 1 dock · 7 trailer spaces · restroom |
| DeMontreville Lake | Demontreville Lake | DNR Division of Parks and Trails | trailer launch · 1 ramp · concrete ramp · 12 trailer spaces · restroom |
| Battle Creek Lake | Battle Creek Lake | City of Woodbury | trailer launch · 1 ramp · concrete ramp · 1 dock · 2 trailer spaces |
| Goose Lake near Scandia | Goose Lake | City of Scandia | trailer launch · 1 ramp · concrete ramp · 1 dock · 3 trailer spaces · restroom |
| Tanners Lake | Tanners Lake | City of Oakdale | trailer launch · 1 ramp · concrete ramp · 10 trailer spaces · restroom |
| Lily Lake | Lily Lake | City of Stillwater | trailer launch · 1 ramp · concrete ramp · 15 trailer spaces · restroom |
Minnesota DNR public water access sites, fetched 26 Oct 2026. The record has no open or closed status.
Minnesota DNR lake surveys have recorded fish in 35 lakes in Washington County: walleye in 16, northern pike in 30, largemouth bass in 29 and muskellunge in 2. Minnesota DNR stocking reports list 12 lakes stocked here between 2016 and 2025, 190 stockings in all. Walleye went into 9 lakes. In 2025, the latest year on record, 8 lakes were stocked.
| Game fish | Lakes | Largest lakes where recorded |
|---|---|---|
| Walleye | 16 | White Bear Lake · Forest Lake · Big Marine Lake · Big Carnelian Lake · Clear Lake near Forest Lake and 11 more |
| Northern pike | 30 | White Bear Lake · Forest Lake · Big Marine Lake · Big Carnelian Lake · Clear Lake near Forest Lake and 25 more |
| Muskellunge | 2 | White Bear Lake · Forest Lake |
| Largemouth bass | 29 | White Bear Lake · Forest Lake · Big Marine Lake · Big Carnelian Lake · Clear Lake near Forest Lake and 24 more |
| Smallmouth bass | 2 | White Bear Lake · Lake Elmo |
| Black crappie | 34 | White Bear Lake · Forest Lake · Big Marine Lake · Big Carnelian Lake · Clear Lake near Forest Lake and 29 more |
| Bluegill | 33 | White Bear Lake · Forest Lake · Big Marine Lake · Big Carnelian Lake · Clear Lake near Forest Lake and 28 more |
| Yellow perch | 26 | White Bear Lake · Forest Lake · Big Marine Lake · Big Carnelian Lake · Clear Lake near Forest Lake and 21 more |
| Channel catfish | 1 | Colby Lake |
| White crappie | 2 | Forest Lake · DeMontreville Lake |
2025: 26 stockings, 487,568 fish in 8 lakes.
Species recorded in Minnesota DNR lake surveys (game fish by DNR's own list) and Minnesota DNR stocking reports, which give the year, not the day; via LakeFinder, fetched 26 Oct 2026. How we measure
Minnesota DNR lists at least one invasive species for 28 lakes in Washington County: Eurasian watermilfoil in 25, zebra mussel in 13 and flowering rush in 1. Moving water, plants or animals between lakes spreads them; DNR's rules apply at every access.
| Species | Lakes | Largest lakes listed |
|---|---|---|
| Eurasian watermilfoil | 25 | White Bear Lake · Forest Lake · Big Marine Lake · Clear Lake near Forest Lake · Lake Elmo · Bone Lake and 19 more |
| Zebra mussel | 13 | White Bear Lake · Forest Lake · Big Marine Lake · Big Carnelian Lake · Clear Lake near Forest Lake · Lake Elmo and 7 more |
| Flowering rush | 1 | Forest Lake |
Minnesota DNR invasive species designations, as listed in LakeFinder, fetched 26 Oct 2026.
12 lakes here have a page of their own, with a depth map drawn from Minnesota DNR survey contours, the stocking record and the latest fish survey.
Chosen by search demand: Google Keyword Planner, October 2026. How we measure
145 lakes of 10 acres or more, 101 of them named, in Minnesota DNR hydrography. Smaller ponds are not counted.
White Bear Lake, at 2,428 acres.
Lake Elmo, 140 ft at its deepest point by Minnesota DNR survey.
Lake Elmo, with measured Secchi readings averaging about 19 ft.
Minnesota DNR lists public water access sites on White Bear Lake, Forest Lake, Big Marine Lake, Big Carnelian Lake, Clear Lake near Forest Lake, Oneka Lake, Lake Elmo, Bone Lake and 7 more.
Minnesota DNR surveys have recorded walleye in 16 lakes here, the largest White Bear Lake, Forest Lake, Big Marine Lake, Big Carnelian Lake, Clear Lake near Forest Lake and Lake Elmo.
Minnesota DNR lists zebra mussels for 13 named lakes here, the largest White Bear Lake, Forest Lake, Big Marine Lake, Big Carnelian Lake, Clear Lake near Forest Lake and Lake Elmo.