14 miles south of Lengby
Mahnomen County, Minnesota · 47.3174° N, 95.5520° W
The Minnesota DNR lists no public access site on Roy Lake; much of the shore may be private.
Updated 19 Oct 2026, 6:07 pm EDT.
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Minnesota DNR lake survey, fetched 15 Oct 2026. Not for navigation.
Minnesota DNR stocking reports list 8 stockings of Roy Lake in 6 of the years 2017 to 2024. The most recent, in 2024, included 640,558 walleye fry. Species stocked: walleye.
Latest: 2024: 640,558 walleye fry.
Source: Minnesota DNR Fisheries (LakeFinder stocking reports), fetched 15 Oct 2026. How we measure
Measured from Minnesota DNR contours. How we measure
Minnesota DNR’s latest standard fish survey of Roy Lake was in July 2022: 9 gill nets and 11 trap nets caught 12 species. The DNR also ran a targeted survey in July 2023; this section uses the latest standard survey.
Walleye per gill net, standard surveys: 1992 0.5 · 2002 7.9 · 2007 7.8 · 2017 4.2 · 2022 4.7
Bluegill per trap net, standard surveys: 1992 92 · 2002 43 · 2007 31 · 2017 52 · 2022 103
Walleye: 43 measured, 10 to 27 in, half 16 in or longer; average 1.8 lb, normal (normal 1.3–2.5 lb).
Northern pike: 158 measured, 16 to 34 in, half 22 in or longer; average 2.9 lb, above normal (normal 1.5–2.6 lb).
Largemouth bass: 33 measured, 5 to 17 in, half 14 in or longer; average 1.5 lb, normal (normal 0.4–1.5 lb).
Black crappie: 187 measured, 3 to 11 in, half 8 in or longer; average 0.25 lb, normal (normal 0.2–0.4 lb).
Bluegill: 1,838 measured, 3 to 7 in, half 6 in or longer; average 0.05 lb, below normal (normal 0.1–0.5 lb).
Also caught: brown bullhead, common carp, hybrid sunfish, white sucker, yellow bullhead.
Source: Minnesota DNR Fisheries lake survey, 18 Jul 2022, via LakeFinder, fetched 15 Oct 2026. Normal range: DNR’s range for lakes of the same class (43 classes, grouped by water chemistry and shape). Each line has its own scale. How we measure
Measured water clarity averages about 4 ft: the Secchi depth across 4 readings, 2007–2022.
Minnesota Pollution Control Agency and volunteer Secchi readings, via Minnesota DNR LakeFinder, fetched 15 Oct 2026.
Minnesota DNR lake survey; straight-line miles.
Roy Lake is 16 feet at its deepest point, measured by Minnesota DNR survey. It covers 695 acres.
Yes. Minnesota DNR stocking reports list 8 stockings of it in 6 of the years 2017 to 2024. The most recent, in 2024, included 640,558 walleye fry.
Minnesota DNR’s July 2022 standard survey caught 12 species, most often bluegill, pumpkinseed, black crappie and northern pike.
About 54% of the lake's area is deeper than 10 feet, measured from Minnesota DNR depth contours.