Cottage Grove Lake
Lane County, Oregon1,076 acresView mapDirections
No nutrient or algae sampling on record from Oregon DEQ for this lake.
- Impaired · Mercury
- 72 ft max depth
- Public access
Cottage Grove Lake in Lane County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Maximum depth: 72.2 ft. Surface area: 1076 acres.
Cottage Grove Lake is a 1,076-acre lake in Lane County, Oregon with a maximum depth of 72 feet (29-foot average). Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Oregon DEQ. Methodology: how these readings are compared.
What Cottage Grove Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Camping1 public campground nearby
- Deep water72.2 ft surveyed max depth
- Big water1,076 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Cottage Grove Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Cottage Grove Lake is safe to swim in today is a call for the Oregon Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Cottage Grove Lake
These are the measurements Oregon DEQ publishes for Cottage Grove Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Cottage Grove Lake
Answers come straight from the public measurements and survey records on this page.
→ Cottage Grove Lake water level: the live USGS gauge reading
Lake Details
Max depth
72.2 ft
Average depth
28.9 ft
Surface area
1,076 acres
Shoreline
10.3 mi
Public access
Yes
Listed by Oregon DEQ
Recreation & Access
- Wilson Creek ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Cottage Grove Lake
- Pine Meadows Campground1.7 kmReserve
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Cottage Grove Lake
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Fishing Cottage Grove Lake
EPA Impairment Status
Cottage Grove Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Drinking water, Aquatic life, Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit OR_LK_1709000203_02_100706 · Official waterbody report
Nearby Lakes in Lane County
Frequently asked questions about Cottage Grove Lake
Where is Cottage Grove Lake?
- Cottage Grove Lake is a lake in Lane County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.
What is the water quality of Cottage Grove Lake?
- Cottage Grove Lake in Lane County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Maximum depth: 72.2 ft. Surface area: 1076 acres.
Is Cottage Grove Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Cottage Grove Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
How deep is Cottage Grove Lake?
- Cottage Grove Lake has a maximum depth of 72.2 feet and an average depth of 28.9 feet. The lake covers 1076 acres.
Are there boat ramps on Cottage Grove Lake?
- Cottage Grove Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Wilson Creek Park. Public access is listed as yes.
Can I fish at Cottage Grove Lake?
- Cottage Grove Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Oregon's fish and wildlife agency, so check its current regulations before you go.
Are there campgrounds on Cottage Grove Lake?
- Cottage Grove Lake has 1 public campground from USGS The National Map within 5 km, including Pine Meadows Campground. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
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Where this data comes from
Measurements for Cottage Grove Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory
Public campgrounds from USGS The National Map Structures, within about 3 miles