Crystal Cove Lake
Dakota County, NebraskaView mapDirections
Not enough samples to grade — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. No letter yet. Here is what we do have.
- Public access
- Limited data
Crystal Cove Lake in Dakota County, Nebraska is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 7.8 ft visibility. Chlorophyll-a (algae): 2.2 µg/L.
- Clarity
- 7.8 ft
- Chlorophyll-a
- 2.2 µg/L
- Public access
- Yes
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Watch Crystal Cove Lake’s letter
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Why Crystal Cove Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Crystal Cove Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity and algae (chlorophyll-a), but not phosphorus.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by NDEE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Crystal Cove Lake is a lake in Dakota County, Nebraska. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, NDEE, last sampled 2016-09-21. Grade methodology: LakeQuality methodology.
What Crystal Cove Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Crystal Cove Lake
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 7.8 ft. Chlorophyll-a 2.2 µg/L. TSI 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.8 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 2.2 µg/L | Not graded |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Recreation & Access
- Crystal Cove ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Crystal Cove Lake
Graded lakes near Crystal Cove Lake
Crystal Cove Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Dakota County
Frequently asked questions about Crystal Cove Lake
Where is Crystal Cove Lake?
- Crystal Cove Lake is a lake in Dakota County, Nebraska. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Crystal Cove Lake?
- Crystal Cove Lake in Dakota County, Nebraska is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 7.8 ft visibility. Chlorophyll-a (algae): 2.2 µg/L.
Is Crystal Cove Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Crystal Cove Lake?
- Crystal Cove Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Crystal Cove Park. Public access is listed as yes.
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Where this data comes from
8 measurements from 1 monitoring station, 2016. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Nebraska Department of Environment and Energy
21NEB001_WQX8 samples · 2016
Analytical methods
- 447.0 ~ EPA; Chlorophyll a and b in phytoplankton by HPLC/UV
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
Named boat-access points from the USGS National Boat Ramps inventory