Cimarron Lake
Morton County, KansasView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Impaired · Nutrients (phosphorus, nitrogen)
- Limited data
Cimarron Lake in Morton County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 1.2 ft visibility. Phosphorus: 91 µg/L. Chlorophyll-a (algae): 26 µg/L.
- Clarity
- 1.2 ft
- Phosphorus
- 91 µg/L
- Chlorophyll-a
- 26 µg/L
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Stays near Cimarron Lake
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Watch Cimarron Lake’s letter
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Why Cimarron 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 Cimarron Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
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 KDHE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Cimarron Lake is a lake in Morton County, Kansas.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2014-06-16. Grade methodology: LakeQuality methodology.
What Cimarron Lake is good for
From access and monitoring records, not editorial picks.
- Camping1 public campground nearby
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Cimarron Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Water quality measurements for Cimarron Lake
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 1.2 ft of visibility. Phosphorus 91 µg/L. Chlorophyll-a 26 µg/L. TSI 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.2 ft | Not graded |
| Phosphorus | 91 µg/L | Not graded |
| Chlorophyll-a (Algae) | 26 µg/L | Not graded |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Recreation & Access
Public campgrounds near Cimarron Lake
- Cimarron0.2 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
Fishing Cimarron Lake
EPA Impairment Status
Cimarron Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit KS-LM060401 · Official waterbody report · Matched by proximity (0.02 km)
Nearby Lakes in Morton County
Frequently asked questions about Cimarron Lake
Where is Cimarron Lake?
- Cimarron Lake is a lake in Morton County, Kansas. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Cimarron Lake?
- Cimarron Lake in Morton County, Kansas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 1.2 ft visibility. Phosphorus: 91 µg/L. Chlorophyll-a (algae): 26 µg/L.
Is Cimarron Lake safe to swim in?
- The letter is not a swimming clearance. Cimarron Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Are there campgrounds on Cimarron Lake?
- Cimarron Lake has 1 public campground from USGS The National Map within 5 km, including Cimarron. 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.
Explore Cimarron Lake across LakeQuality
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Where this data comes from
5 measurements from 1 monitoring station, 2014. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Kansas Department Of Health And Environment
21KAN001_WQX5 samples · 2014
Analytical methods
- Depth, Secchi disk depth
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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
Impairment status from EPA ATTAINS 303(d) database
Public campgrounds from USGS The National Map Structures, within about 3 miles