Duncan Reservoir
Modoc County, California161 acresView mapDirections
No nutrient or algae sampling on record from SWRCB for this lake.
- Limited data
Duncan Reservoir in Modoc County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 161 acres.
Duncan Reservoir is a 161-acre lake in Modoc County, California.
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
What Duncan Reservoir is good for
From access and monitoring records, not editorial picks.
- Camping1 public campground nearby
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Duncan Reservoir is safe to swim in today is a call for the California State Water Resources Control Board and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Duncan Reservoir
These are the measurements SWRCB publishes for Duncan Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
Ask about Duncan Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
161 acres
Shoreline
3.4 mi
No bathymetric survey has been published for Duncan Reservoir, so its depth is not documented here.
Recreation & Access
Public campgrounds near Duncan Reservoir
- Howards Gulch4.2 km
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 Duncan Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Duncan Reservoir in Modoc County, California — 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 Duncan Reservoir
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Fishing Duncan Reservoir
Nearby Lakes in Modoc County
Frequently asked questions about Duncan Reservoir
Where is Duncan Reservoir?
- Duncan Reservoir is a lake in Modoc County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Duncan Reservoir?
- Duncan Reservoir in Modoc County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 161 acres.
Is Duncan Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there campgrounds on Duncan Reservoir?
- Duncan Reservoir has 1 public campground from USGS The National Map within 5 km, including Howards Gulch. 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 Duncan Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Public campgrounds from USGS The National Map Structures, within about 3 miles