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LakeQuality
Max depth
Not measured
Surface area
336 acres
Public access
No public access on record
Water quality
Grade F
Best season
June–September
County
Union County, Iowa
Wakesurf suitability
Fair

Depth unrated · Room Fair · limited data

About the water

Green Valley Lake covers roughly 336 acres, giving it room for a wake-boat setup when conditions cooperate. Public access varies — confirm a launch before you go. Iowa sets statewide wakesurf rules, and individual lakes often add no-wake zones, hours, or horsepower limits — check the Iowa rules page and the local ordinance before launching.

Iowa wake-sport rules

Iowa has no statewide wakesurfing-specific law; the absence of state standards has led many municipalities to adopt their own local restrictions. General rules cap motorboats at 10 mph within 300 feet of shore on inland lakes and federal impoundments, and local authorities set no-wake zones. Wake-surf rules are local/jurisdiction-specific.

Full Iowa 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 Iowa DNR — Lakes.

Where to stay near Green Valley Lake

Top-rated places to stay near Green Valley Lake

See the full where-to-stay map for Green Valley Lake

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Frequently Asked Questions

Green Valley Lake rates Fair for wakesurf suitability. Workable, but tighter on depth or room than ideal. The rating is based on its measured surface area of 336 acres. This is a read of the water's dimensions, not legal permission — check the Iowa rules and the local authority for this lake before you launch.

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

Green Valley Lake carries a LakeQuality water-quality grade of F, 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.

Iowa has no statewide wakesurfing-specific law; the absence of state standards has led many municipalities to adopt their own local restrictions. General rules cap motorboats at 10 mph within 300 feet of shore on inland lakes and federal impoundments, and local authorities set no-wake zones. Wake-surf rules are local/jurisdiction-specific. 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 Green Valley Lake.

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