Mozingo Lake
Nodaway County, Missouri1,009 acresView 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 · Algal growth
- Limited data
Mozingo Lake in Nodaway County, Missouri is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 120 µg/L. Surface area: 1009 acres.
- Area
- 1,009 acres
- Trend
- ↑ Improving
Stays via Stay22
Stays near Mozingo Lake
Compare lakeside cabins, hotels, and vacation rentals near Mozingo Lake in Nodaway County, Missouri — 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 Mozingo Lake
Prices for Sep 11–13, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Missouri’s top lakes →
Watch Mozingo Lake’s letter
Email me if this lake’s grade moves. Grades stay free.
Or email
Why Mozingo 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 Mozingo Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity 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 Missouri DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Mozingo Lake is a 1,009-acre lake in Nodaway County, Missouri. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2022-10-12. Grade methodology: LakeQuality methodology.
What Mozingo Lake is good for
From access and monitoring records, not editorial picks.
- Big water1,009 acres
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Mozingo Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury. Check local advisories before you swim.
Water quality measurements for Mozingo Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 120 µg/L. TSI 73.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 120 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 73 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 1,009 acres |
No bathymetric survey has been published for Mozingo Lake, so its depth is not documented here.
Fishing Mozingo Lake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.085 m/yr | 4 |
| Phosphorus | ↑ Improving | -2.87 µg/L/yr | 5 |
| Chlorophyll-a | ↑ Improving | -5.88 µg/L/yr | 5 |
Reservoir Info (USACE NID)
Mozingo Lake is a man-made reservoir impounded by the Mozingo Creek Dam (completed 1992), built primarily for water supply on the MOZINGO CREEK; earth-type dam, 77 ft tall and 2,735 ft long.
- Surface area
- 1,009 ac
- Normal storage
- 1,275 ac-ft
- Max storage
- 1,275 ac-ft
- Drainage area
- 20.92 sq mi
- Hazard class
- High
- Owner
- CITY OF MARYVILLE
All listed purposes: Water Supply;Recreation;Flood Risk Reduction.
Source: USACE National Inventory of Dams, NID ID MO12277 · Operator website · Matched by proximity (0.27 km)
EPA Impairment Status
Mozingo Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MO_7402.00 · Official waterbody report
Regulated Pollution Sources Nearby
4 EPA-permitted facilities operate within about 5 miles of Mozingo Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 3 facilities have a reported Clean Water Act violation in the past three years.
- Maryville WwtpMaryville · 2.8 mi away · NPDES MO0033286MajorRecent violation
- Countryside View Subdivision WwtfMaryville · 0.8 mi away · NPDES MO0130826Recent violation
- Mdoc, Maryville Treatment Center WwtfMaryville · 2.8 mi away · NPDES MO0119369Recent violation
- Stoll Addition WwtfMaryville · 3.5 mi away · NPDES MO0133876
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Graded lakes near Mozingo Lake
Mozingo Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Nodaway County
Frequently asked questions about Mozingo Lake
Where is Mozingo Lake?
- Mozingo Lake is a lake in Nodaway County, Missouri. 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 Mozingo Lake?
- Mozingo Lake in Nodaway County, Missouri is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 120 µg/L. Surface area: 1009 acres.
Is Mozingo Lake safe to swim in?
- The letter is not a swimming clearance. Mozingo Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury. Check local advisories before you swim.
Explore Mozingo Lake across LakeQuality
Depth, room, public access, and the state wake-sport rules
Species activity outlook by water temperature and season
Where to stay at Missouri's top lakes, each with its grade
Missouri's cleanest and most-polluted lakes, ranked
More Missouri Lake Rankings
Other Lakes in Missouri
Hypereutrophic Lakes in Missouri
Where this data comes from
4 measurements from 1 monitoring station, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Missouri Dept. of Natural Resources
MDNR4 samples · 2020–2022
Analytical methods
- Depth, Secchi disk in meters
- Nitrogen and Phosphorus, Total, Whole-water, Alkaline Persulfate Digest
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)