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LakeQuality
Max depth
Not measured
Surface area
133,000 acres
Public access
No public access on record
Water quality
Grade B
Best season
June–August
County
Mercer County, North Dakota
Wakesurf suitability
Excellent

Depth unrated · Room Excellent · limited data

About the water

Qacmainstdup Lake covers roughly 133,000 acres, giving it room for a wake-boat setup when conditions cooperate. Public access varies — confirm a launch before you go. North Dakota sets statewide wakesurf rules, and individual lakes often add no-wake zones, hours, or horsepower limits — check the North Dakota rules page and the local ordinance before launching.

North Dakota wake-sport rules

North Dakota has no statewide wakesurfing-specific regulation. General towing rules require an observer or a mirror (at least 78 square inches) when towing on skis, a surfboard or similar device, and some lakes carry idle-speed or electric-motor-only restrictions. No wake-surf-specific distance/depth/acreage thresholds exist statewide.

Full North Dakota rules →

This rating classifies measured depth and surface area against published wake-sport guidance. It is not a safety clearance and not permission to ride: local no-wake zones, hours, and horsepower limits are set by the county, lake district, or land manager, and they take precedence. Lake measurements from North Dakota Game and Fish.

Where to stay near Qacmainstdup Lake

Top-rated places to stay near Qacmainstdup Lake

See the full where-to-stay map for Qacmainstdup Lake

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Frequently Asked Questions

Qacmainstdup Lake rates Excellent for wakesurf suitability. Deep and roomy enough to ride the way the sport’s own guidance recommends. The rating is based on its measured surface area of 133,000 acres. This is a read of the water's dimensions, not legal permission — check the North Dakota rules and the local authority for this lake before you launch.

No maximum-depth measurement is on record for Qacmainstdup Lake in the state agency data we use, so its depth factor is unrated. We do not estimate depth.

Qacmainstdup Lake carries a LakeQuality water-quality grade of B, computed from EPA and state monitoring data — Secchi clarity, total phosphorus, and chlorophyll-a. That is a separate question from wakesurf suitability: a lake can be excellent to ride and mediocre to swim in, or the reverse. See the full lake page for the grade breakdown.

North Dakota has no statewide wakesurfing-specific regulation. General towing rules require an observer or a mirror (at least 78 square inches) when towing on skis, a surfboard or similar device, and some lakes carry idle-speed or electric-motor-only restrictions. No wake-surf-specific distance/depth/acreage thresholds exist statewide. Individual lakes often add stricter local limits on top of the statewide rule — no-wake zones, operating hours, and horsepower caps are all common — so confirm with the local authority for Qacmainstdup Lake.

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