Minnesota · DNR survey data
Sonju Lake
Sonju Lake covers 37 acres in Lake County, running to 8 feet, last surveyed by the DNR in 2016. The Minnesota DNR has not published bathymetry for this lake, so there is no depth map here, just the survey record: what the nets held and how big it ran.
DNR survey data
Fish species
Brook troutPresentPresent in recent DNR surveys.
Present in recent DNR surveys.
Lengths measured · 13 fish
Recent · 2012Lengths measured · 13 fish
2012Lengths measured · 204 fish
2009Lengths measured · 28 fish
1997Lengths measured · 66 fish
1994Last recorded in the 2001 survey and not seen since.
Rates come from standard DNR survey gear (gill nets, trap nets, electrofishing), judged against statewide benchmarks for the same gear — which is why the same number of fish per net can read differently for two species. Where the standard gear can't count a species reliably, the page shows presence and size only. Typical is the middle fish of those measured. Open a row for the full length spread, survey by survey. You can read every number on this page without an app or an account.
Recent reports
Sonju Lake fishing reports
Recent reports on Sonju Lake from guides, tournaments and regular anglers. Anything posted in the last two weeks also bumps the matching spots on the live map, so you'll see a "matches a recent report" tag on them.
Within 30 miles
Nearby lakes
- Balsam Lake · 221 ac · 3.9 mi
- Benson Lake · 19 ac · 4.5 mi
- Cramer Lake · 68 ac · 5.9 mi
- Kowalski Lake · 13 ac · 6.1 mi
- Moose Lake · 180 ac · 6.4 mi
- Cabin Lake · 66 ac · 7.2 mi
- Johnson Lake · 36 ac · 7.5 mi
- Spur Lake · 34 ac · 8.6 mi
Quick answers
Frequently asked questions
Is there a depth map for Sonju Lake?
The Minnesota DNR has not published bathymetry for Sonju Lake, so this page carries the survey record instead: species, catch rates and stocking history.
What fish are in Sonju Lake?
The most recent DNR survey (2016) recorded brook trout, brown trout.
Is Sonju Lake stocked?
No stocking is on record for Sonju Lake in the DNR's stocking database.
When was Sonju Lake last surveyed?
The Minnesota DNR last surveyed Sonju Lake in 2016, the most recent of 9 surveys on record. A survey that old is a starting point, not a current reading.
Survey numbers are the Minnesota DNR's. How this site reads them →
Page updated .