East Arroda Lake
Oliver County, North Dakota43 acresView mapDirections
Nutrients and algae sit mid-range for this region.
- Eutrophic
- #1 of 3 in the county
- Public access
- Limited data
East Arroda Lake in Oliver County, North Dakota has a water quality grade of C (Fair). Water clarity: 5.6 ft visibility. Phosphorus: 56 µg/L. Chlorophyll-a (algae): 6.2 µg/L. Surface area: 43.4 acres.
- Clarity
- 5.6 ft
- Typical in August
- 64°F
- Area
- 43 acres
- Type
- Eutrophic
- Phosphorus
- 56 µg/L
- Chlorophyll-a
- 6.2 µg/L
- Public access
- Yes
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Watch East Arroda Lake’s letter
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East Arroda Lake is a 43-acre productive, nutrient-rich eutrophic lake in Oliver County, North Dakota. Water quality is graded C based on 1 sampling years through 2023. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 2 other monitored lakes in Oliver County, East Arroda Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, NDDEQ, last sampled 2023-10-17. Grade methodology: LakeQuality methodology.
What East Arroda Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: C (Fair)
Murky, only visible to about 5.6 ft. Phosphorus 56 µg/L. Chlorophyll-a 6.2 µg/L. TSI 54. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.6 ft | Not graded |
| Phosphorus | 56 µg/L | Not graded |
| Chlorophyll-a (Algae) | 6.2 µg/L | Not graded |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Water Temperature
East Arroda Lake typically sits around 64°F at the surface in August. Summer average is about 66°F. Usually warmest in Jun (about 67°F) and coldest in Oct (about 50°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 12 field readings (2023–2023) via the EPA Water Quality Portal. See the full East Arroda Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 43 acres |
| Public Access | Yes |
No bathymetric survey has been published for East Arroda Lake, so its depth is not documented here.
Recreation & Access
- East Arroda DamPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing East Arroda Lake
Reservoir Info (USACE NID)
East Arroda Lake is a man-made reservoir impounded by the Daub Dam (completed 1971), built primarily for recreation on the Missouri-TR; earth-type dam, 79 ft tall and 1,620 ft long.
- Surface area
- 43.4 ac
- Normal storage
- 732 ac-ft
- Max storage
- 1,346 ac-ft
- Drainage area
- 6.2 sq mi
- Hazard class
- Significant
- Owner
- ND Game & Fish
Source: USACE National Inventory of Dams, NID ID ND00372 · Operator website · Matched by proximity (0.23 km)
County Ranking
Ranked #1 of 3 lakes in Oliver County
Nearby Lakes in Oliver County
Frequently asked questions about East Arroda Lake
Where is East Arroda Lake?
- East Arroda Lake is a lake in Oliver County, North Dakota. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for East Arroda Lake?
- East Arroda Lake in Oliver County, North Dakota has a water quality grade of C (Fair). Water clarity: 5.6 ft visibility. Phosphorus: 56 µg/L. Chlorophyll-a (algae): 6.2 µg/L. Surface area: 43.4 acres.
Is East Arroda Lake safe to swim in?
- The C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
What is the water temperature of East Arroda Lake?
- East Arroda Lake typically sits around 64°F at the surface in August, from 12 EPA Water Quality Portal field readings (2023–2023). That is a typical value for the month, not a live reading.
Are there boat ramps on East Arroda Lake?
- East Arroda Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include East Arroda Dam. Public access is listed as yes.
Explore East Arroda Lake across LakeQuality
Species activity outlook by water temperature and season
Where to stay at North Dakota's top lakes, each with its grade
High nutrients, frequent algae, reduced clarity
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More North Dakota Lake Rankings
Other Grade C Lakes in North Dakota
Eutrophic Lakes in North Dakota
Where this data comes from
20 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North Dakota Department Of Environmental Quality
21NDHDWQ_WQX20 samples · 2023
Analytical methods
- Phosphorus by Colorimetry
- 447.0 ~ EPA; Chlorophyll a and b in phytoplankton by HPLC/UV
- 4500 NO3 E ~ Nitrate in Water- Cadmium Reduction
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Depth, fish, and access data from North Dakota Game & Fish
Named boat-access points from the USGS National Boat Ramps inventory