Three Island Lake (Cass County)
Cass County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 11017700
Three Island Lake (Cass County) has no DNR stocking rows in LakeFinder; this page carries its DNR depth, access and survey data.
- Three Island Lake (Cass County) shows no stocking records in Minnesota DNR LakeFinder as of .
- Maximum depth 13 ft; surface area 288 acres, 288 littoral acres, 7.5 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 10.3 ft.
- Fish species DNR lists here: black crappie, bluegill, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, white sucker, yellow perch.
- 1 public access on the DNR list.
- Most recent DNR fish survey: (standard survey).
- Cass County, nearest town Longville; DNR lake number (DOW) 11017700.
Depth map
Bathymetric contours from the Minnesota DNR lake survey; depths in feet. Simplified for the web; not for navigation.
Public accesses
| Type | Owner | Where |
|---|---|---|
| concrete ramp | USF | USFS access on Northeast side of lake. |
DNR fish survey, 2022
| Species | Gear | Catch per net | Total catch | Avg lb |
|---|---|---|---|---|
| Northern pike | Standard gill nets | 20.17 | 121 | 1.93 |
| Bluegill | Standard gill nets | 16.33 | 98 | 0.06 |
| Black crappie | Standard gill nets | 5.33 | 32 | 0.22 |
| Yellow perch | Standard gill nets | 4.83 | 29 | 0.10 |
| Hybrid sunfish | Standard gill nets | 3.50 | 21 | 0.15 |
| Pumpkinseed | Standard gill nets | 2.67 | 16 | 0.10 |
| Largemouth bass | Standard gill nets | 2.50 | 15 | 1.61 |
| Bluegill | Standard trap nets | 14.11 | 127 | 0.08 |
| Hybrid sunfish | Standard trap nets | 2.89 | 26 | 0.49 |
| Black crappie | Standard trap nets | 1.44 | 13 | 0.27 |
| Northern pike | Standard trap nets | 1.00 | 9 | 2.60 |
| Yellow perch | Standard trap nets | 0.89 | 8 | 0.09 |
| Pumpkinseed | Standard trap nets | 0.56 | 5 | 0.18 |
| Largemouth bass | Standard trap nets | 0.11 | 1 | 0.13 |
Catch per net (CPUE) is the DNR survey's count per gill net or trap net set; higher means more of that species were sampled, not a fishing forecast. Top species per gear shown; where we have no verified common name for a DNR code, the code itself is shown.
Three Island is a 288-acre lake with 7 miles of shoreline and a maximum depth of 13 feet located east of Walker, MN. A US Forest Service owned public access is located on the north shore. The DNR has classified Minnesota's lakes into 43 different classes based on physical, chemical and other characteristics. Three Island Lake is in Lake Class 37. Lake Class 37 lakes are small, shallow, eutrophic lakes. Other area lakes in this class include Cedar, Horseshoe, Jackpine, Little Woman and Twenty-Six. Most of shoreline on Three Island Lake is publicly owned and undeveloped. The lake is primarily managed for Black Crappie, Bluegill, Northern Pike and Largemouth Bass and secondarily for Yellow Perch. Low dissolved oxygen observations in Three Island Lake during some winters suggests the potential for winterkill to occur. No fish kill has been confirmed at ice out and surviving fish have responded with strong reproduction, indicating if a kill is occurring it is partial. Three Island Lake is a multi-species lake that offers fishing in a wild scenic setting. Black Crappie were abundant with fish from 4 to 13 inches sampled. Management goals are still being developed for this species. Bluegill were caught in moderate numbers not meeting the management goal with fish from 3 to 8 inches sampled. Northern Pike were very abundant and were caught in numbers above the management goals set for this lake with fish from 9 to 27 inches sampled, however size goals for Northern Pike were met. Yellow Perch caught in low numbers not meeting the management goal. Yellow Perch were sampled from 5 to 9 inches. Other fish species that anglers can expect to encounter include, Hybrid Sunfish and Pumpkinseed. People can have significant impacts on lakes and the fish populations they support. Harvest, lakeshore development, removal of shoreline vegetation, and introductions of invasive species can all adversely affect fish populations. Currently, no aquatic invasive species (AIS) have been identified in Three Island Lake. AIS are moved from infested to non-infested waters by anglers, boaters, and lake shore owners and can adversely impact lakes and fish populations. To avoid spreading AIS, lake users are required to remove all aquatic plants or animals from their watercraft and drain all water from their boat before leaving the access. If you suspect an infestation of an invasive species in this lake, save a specimen and report it to a local natural resource office. Additional information on all of these topics can be found on the DNR website (www.dnr.state.mn.us) or by contacting the…
Minnesota DNR survey narrative, .
All Minnesota stockings · every Minnesota lake with a page · state CSV · this lake on DNR LakeFinder
Stocking rows, depths, accesses and survey figures are Minnesota DNR LakeFinder data as of 2026-09-02; contours are the DNR bathymetric survey. Regulations, slot limits and special rules are on the DNR page linked above, not here.
Hear when the states we cover post stockings
One email a week in season: which waters in the states we cover were stocked, straight from the state agencies' own postings. No spam, no fishing-gear ads in the mail.
Free · double opt-in · unsubscribe anytime · we store only your email.