Twin Lakes
LaMoure County, North DakotaView mapDirections
ND DEQ publishes the water-quality measurements for Twin Lakes. Here is what has been measured.
- 64 ft max depth
- Public access
- Limited data
Twin Lakes in LaMoure County, North Dakota has water-quality measurements published by ND DEQ, shown here as reported. Water clarity: 14.1 ft visibility. Chlorophyll-a (algae): 3.2 µg/L.
Twin Lakes is a lake in LaMoure County, North Dakota with an estimated average depth of about 64 feet. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, NDDEQ, last sampled 2021-10-01. Methodology: how these readings are compared.
What Twin Lakes is good for
From access and monitoring records, not editorial picks.
- Clear water14.1 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Twin Lakes is safe to swim in today is a call for the North Dakota Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Twin Lakes
These are the measurements ND DEQ publishes for Twin Lakes, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 14.1 ft. Chlorophyll-a 3.2 µg/L. TSI 40.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 14.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | 3.2µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 40 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Twin Lakes
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Twin Lakes typically sits around 55°F at the surface in October. Summer average is about 62°F. Usually warmest in Aug (about 64°F) and coldest in May (about 46°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (46°F) to its warmest (64°F).
Typical surface water temperature by month, from 15 field readings (2020–2021) via the EPA Water Quality Portal. See the full Twin Lakes water temperature breakdown →
Lake Details
Max depth
~64 ft est.
Public access
Yes
Listed by ND DEQ
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. North Dakota has not published bathymetry for Twin Lakes.
Lake Size & Watershed
Watershed (drainage) area
45 sq mi
HydroLAKES / HydroSHEDS
Surface area
638 acres
HydroLAKES / HydroSHEDS
Shoreline
7.4 mi
HydroLAKES / HydroSHEDS
Elevation
1,375 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Stays via Stay22
Stays near Twin Lakes
Compare lakeside cabins, hotels, and vacation rentals near Twin Lakes in LaMoure County, North Dakota — 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 Twin Lakes
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Planning a trip? Cabins and lodging at Twin Lakes → · more North Dakota lake trips
Follow Twin Lakes’s readings
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Fishing Twin Lakes
Water quality readings over time
2 seasons of samples on record (2020–2021). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening2 years
Nearby Lakes in LaMoure County
Frequently asked questions about Twin Lakes
Where is Twin Lakes?
- Twin Lakes is a lake in LaMoure County, North Dakota. Its water-quality measurements are published by ND DEQ and shown on this page as reported.
What is the water quality of Twin Lakes?
- Twin Lakes in LaMoure County, North Dakota has water-quality measurements published by ND DEQ, shown here as reported. Water clarity: 14.1 ft visibility. Chlorophyll-a (algae): 3.2 µg/L.
Is Twin Lakes safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Twin Lakes?
- Twin Lakes typically sits around 55°F at the surface in October, from 15 EPA Water Quality Portal field readings (2020–2021). That is a typical value for the month, not a live reading.
How deep is Twin Lakes?
- No published bathymetric survey covers Twin Lakes, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 64 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Can I fish at Twin Lakes?
- Public access to Twin Lakes is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by North Dakota's fish and wildlife agency, so check its current regulations before you go.
Explore Twin Lakes across LakeQuality
18.6 mi away · 8 ft
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Where this data comes from
9 measurements from 1 monitoring station, 2020–2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North Dakota Department Of Environmental Quality
21NDHDWQ_WQX9 samples · 2020–2021
Analytical methods
- 447.0 ~ EPA; Chlorophyll a and b in phytoplankton by HPLC/UV
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Depth, fish, and access data from North Dakota Game & Fish