Cooks Lake
Cooks Lake in Branch County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Maximum depth: 20 ft. Surface area: 71.1 acres.
- Max depth
- 20 ft
- Area
- 71 acres
Next lake in Branch County
Swipe left or right on this bar to open the next or previous lake.
Water clarity at Cooks Lake
Murky water. Across summers from 2018 to 2023, Cooks Lake averaged 0.78 m (3 ft) of visibility down into the water, so you cannot see far below the surface in midsummer.
Nobody has taken a water sample here that we can find. Michigan's environmental agency measures clarity on lakes like this one from satellite images instead, which is why this page reports how clear the water is but carries no A–F grade.
Clear is not the same as clean. A lake can be easy to see through and still carry high nutrient levels, and a naturally tea-stained lake can be perfectly healthy. The A–F grade on other lakes is built from phosphorus and algae measured in a laboratory, and clarity alone cannot stand in for it.
The same satellite images put summer algae here at roughly 28.01 micrograms per litre. Estimating algae from orbit is far less exact than measuring clarity, so that figure is worth knowing and is not part of any rating.
Cooks Lake is a 71-acre lake in Branch County, Michigan with a maximum depth of 20 feet (12-foot average).
Source: EPA Water Quality Portal sampling records, EGLE, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Cooks Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Cooks Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Cooks Lake
Compare lakeside cabins, hotels, and vacation rentals near Cooks Lake in Branch County, Michigan — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Cooks Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Michigan’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 20 ft |
| Average Depth | 12 ft |
| Surface Area | 71 acres |
| Shoreline Length | 1 mi |
Fishing Cooks Lake
Nearby Lakes in Branch County
Frequently asked questions about Cooks Lake
Where is Cooks Lake?
- Cooks Lake is a lake in Branch County, Michigan. LakeQuality has not rated this lake (UNRATED) — no in-situ water sample; this lake is rated for water clarity from satellite observations instead.
What is the water quality grade for Cooks Lake?
- Cooks Lake in Branch County, Michigan is not rated for water quality — its monitoring record does not meet the evidence bar. Maximum depth: 20 ft. Surface area: 71.1 acres.
Is Cooks Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Cooks Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Cooks Lake?
- Cooks Lake has a maximum depth of 20 feet and an average depth of 12 feet. The lake covers 71.1 acres.
Explore Cooks Lake across LakeQuality
Fish species and top-graded lakes across Michigan
Fish species and best lakes in Branch County
Species activity outlook by water temperature and season
Where to stay at Michigan's top lakes, each with its grade
Michigan's cleanest and most-polluted lakes, ranked
More Michigan Lake Rankings
Other Lakes in Michigan
Where this data comes from
Measurements for Cooks Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.