Green Lake (Isanti County)
Isanti County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 30013600
DNR records show 12 stocking entries at Green Lake (Isanti County) since 2016, most recently walleye fingerlings in 2024 (11,923 fish).
- Green Lake (Isanti County) has 12 DNR stocking records across 5 years (2016-2024): walleye (12).
- The most-stocked species by count is walleye: 59,526 fish on record.
- Maximum depth 28 ft; surface area 833 acres, 357 littoral acres, 4.6 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 5.5 ft.
- Fish species DNR lists here: black bullhead, black crappie, bluegill, bowfin (dogfish), brown bullhead, common carp, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, walleye, and 3 more.
- 1 public access on the DNR list.
- Most recent DNR fish survey: (standard survey).
- Isanti County, nearest town Princeton; DNR lake number (DOW) 30013600.
Depth map
Bathymetric contours from the Minnesota DNR lake survey; depths in feet. Simplified for the web; not for navigation.
Stocking history
| Year | Species | Size | Number | Pounds |
|---|---|---|---|---|
| 2024 | Walleye4 | fingerlings | 11,923 | 186.3 |
| 2024 | Walleye | yearlings | 1,995 | 285.0 |
| 2024 | Walleye | fingerlings | 5,670 | 273.0 |
| 2022 | Walleye | fingerlings | 23,452 | 487.0 |
| 2022 | Walleye | fingerlings | 980 | 49.0 |
| 2020 | Walleye | yearlings | 5,775 | 165.0 |
| 2020 | Walleye | yearlings | 1,136 | 376.0 |
| 2018 | Walleye | fingerlings | 6,000 | 634.0 |
| 2018 | Walleye | yearlings | 405 | 135.0 |
| 2016 | Walleye | fingerlings | 1,490 | 108.0 |
| 2016 | Walleye | adults | 14 | 20.0 |
| 2016 | Walleye | yearlings | 686 | 232.0 |
4 fish cooperatively purchased, raised, and/or stocked by Mille Lacs Band of Ojibwe.
Field note · Minnesota stocks by year, not by truck day: walleye fry go in within weeks of ice-out, fingerlings and yearlings mostly in fall, and stream trout in spring and fall. A row here means the fish went in during that year; DNR adds the year's rows after the fact, so the current year can look empty until winter.
Public accesses
| Type | Owner | Where |
|---|---|---|
| concrete ramp | Minnesota DNR | - State owned public access on the east side of the lake in section 27. |
DNR fish survey, 2025
| Species | Gear | Catch per net | Total catch | Avg lb |
|---|---|---|---|---|
| Largemouth bass | Standard electrofishing | 161.92 | 278 | 1.18 |
| Yellow perch | Standard gill nets | 81.22 | 731 | 0.04 |
| Black crappie | Standard gill nets | 17.11 | 154 | 0.42 |
| Bluegill | Standard gill nets | 11.78 | 106 | 0.29 |
| Yellow bullhead | Standard gill nets | 6.00 | 54 | 0.72 |
| Walleye | Standard gill nets | 5.89 | 53 | 2.01 |
| Northern pike | Standard gill nets | 4.00 | 36 | 3.30 |
| White sucker | Standard gill nets | 1.22 | 11 | 2.38 |
| Brown bullhead | Standard gill nets | 1.22 | 11 | 1.13 |
| Bluegill | Standard trap nets | 45.89 | 413 | 0.04 |
| Yellow perch | Standard trap nets | 8.00 | 72 | 0.10 |
| Bowfin (dogfish) | Standard trap nets | 1.89 | 17 | 3.53 |
| Yellow bullhead | Standard trap nets | 1.78 | 16 | 1.07 |
| Black crappie | Standard trap nets | 1.78 | 16 | 0.38 |
| Northern pike | Standard trap nets | 0.78 | 7 | 6.70 |
| Walleye | Standard trap nets | 0.67 | 6 | 3.91 |
| Brown bullhead | Standard trap nets | 0.22 | 2 | 1.48 |
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.
Green Lake is an 832-acre lake located eight miles east of Princeton and 10 miles west of Cambridge, in west-central Isanti County, and is within the Rum River Watershed. The lake has a maximum depth of 28 feet and an average depth of 21 feet. It is 43% littoral (15 feet or less, 357 acres). Water clarity is generally low due to frequent algae blooms, with Secchi depths between 2 and 4 feet. There are three small named inlets: one in the northcentral (North Brook), one in the northeast adjacent to the public access (Bratlund Brook), and one in the southwest (Wyanett Creek). There is one larger outlet in the southeast (Green Brook Creek) that flows into the Rum River three miles downstream of the lake outlet. Due to high nutrient availability and 43% of the lake being less than 15 feet, aquatic vegetation is plentiful and has been sampled to depths of 10 feet. Recent plant surveys indicate a very diverse plant community. Eurasian Watermilfoil, a non-native species, has been present since 2000, and Curlyleaf Pondweed has been present since 1971. Substrates are primarily sand, with some gravel and rubble. The lake is highly developed with approximately 175 homes (38/shoreline mile). A paved, state-owned public access is located on the northeast shore that accommodates 20 vehicles with trailers. There have been a total of 16 fish surveys completed to monitor for changes in species composition, number, and length distribution. Primarily management species are Walleye and Northern Pike, while secondary species include Black Crappie and Largemouth Bass. Angers fishing Green Lake can expect moderate numbers of quality sized Walleye and Northern Pike with high numbers of average sized Black Crappie and Largemouth Bass. Walleyes were stocked initially in 1949 and have been sampled in all 16 surveys, which were initiated in 1949. In 2025, the gill net catch rate was 5.9/net, which compares to the average of 6.3/net. Catch rates have varied between 0.1/net in 1949 to 35.8/net in 1957. The 53 Walleye sampled ranged from 7.6 to 24.8 inches and had an average length of 17.1 inches. Walleyes over 25 inches have been sampled in the past 8 consecutive surveys and 12 of the 16 surveys. Catch rates for fingerling stocked Walleye year classes have resulted in more consistent gill net catch rates, indicating the current stocking plan is providing a stable Walleye fishery. A total of 36 Northern Pike were sampled in gill nets in 2025 which resulted in a catch rate of 4.0/net. Gill net catch rates have varied from 0.1/net in 1949 to 6.0/net in 1976 and have averaged 3.8/net.…
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.
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