Southern Mozingo Rservoir 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.
- Public access
- Limited data
Southern Mozingo Rservoir Lake in Nodaway County, Missouri is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 60 µg/L. Surface area: 1009 acres.
- Typical in September
- 77°F
- Area
- 1,009 acres
- Phosphorus
- 60 µg/L
- Trend
- ↑ Improving
- Public access
- Yes
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Watch Southern Mozingo Rservoir Lake’s letter
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Why Southern Mozingo Rservoir 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 Southern Mozingo Rservoir 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.
Southern Mozingo Rservoir Lake is a 1,009-acre lake in Nodaway County, Missouri. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2023-12-19. Grade methodology: LakeQuality methodology.
What Southern Mozingo Rservoir Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
- Big water1,009 acres
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Southern Mozingo Rservoir Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 60 µg/L. TSI 63.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 60 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 63 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Water Temperature
Southern Mozingo Rservoir Lake typically sits around 77°F at the surface in September. Summer average is about 79°F. Usually warmest in Aug (about 82°F) and coldest in Sep (about 77°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 14 field readings (2022–2023) via the EPA Water Quality Portal. See the full Southern Mozingo Rservoir Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 1,009 acres |
| Public Access | Yes |
No bathymetric survey has been published for Southern Mozingo Rservoir Lake, so its depth is not documented here.
Recreation & Access
- Mozingo Lake (Maryville)Public
- Mozingo Lake (Maryville)Public
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Southern Mozingo Rservoir 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)
Southern Mozingo Rservoir 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 (0.52 km)
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Southern Mozingo Rservoir Lake under Clean Water Act (NPDES) discharge permits. 2 facilities have a reported Clean Water Act violation in the past three years.
- Pleasant View Addition WwtfMaryville · 1.4 mi away · NPDES MO0131393Recent violation
- Scout Ridge Estates WwtfMaryville · 4.1 mi away · NPDES MO0127981Recent violation
- Bolder Industries MaryvilleMaryville · 3.4 mi away · NPDES MO0136808
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 Southern Mozingo Rservoir Lake
Southern Mozingo Rservoir Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Nodaway County
Frequently asked questions about Southern Mozingo Rservoir Lake
Where is Southern Mozingo Rservoir Lake?
- Southern Mozingo Rservoir 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 Southern Mozingo Rservoir Lake?
- Southern Mozingo Rservoir Lake in Nodaway County, Missouri is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 60 µg/L. Surface area: 1009 acres.
Is Southern Mozingo Rservoir Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Southern Mozingo Rservoir Lake?
- Southern Mozingo Rservoir Lake typically sits around 77°F at the surface in September, from 14 EPA Water Quality Portal field readings (2022–2023). That is a typical value for the month, not a live reading.
Are there boat ramps on Southern Mozingo Rservoir Lake?
- Southern Mozingo Rservoir Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Mozingo Lake (Maryville), Mozingo Lake (Maryville). Public access is listed as yes.
Explore Southern Mozingo Rservoir Lake across LakeQuality
Depth, room, public access, and the state wake-sport rules
Species activity outlook by water temperature and season
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Where this data comes from
13 measurements from 1 monitoring station, 2022–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Missouri Water Science Center
USGS-MO13 samples · 2022–2023
Analytical methods
- Nutrients, wu, WCA,persulfate,CF
- YSI EXO turbidity sensor, FNU
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Named boat-access points from the USGS National Boat Ramps inventory