Southern Mozingo Rservoir Lake
Nodaway County, Missouri1,009 acresView mapDirections
Missouri DNR publishes the water-quality measurements for Southern Mozingo Rservoir Lake. Here is what has been measured.
- Impaired · Algal growth
- Public access
- Limited data
Southern Mozingo Rservoir Lake in Nodaway County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Phosphorus: 60 µg/L. Surface area: 1009 acres.
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. Methodology: how these readings are compared.
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 conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Southern Mozingo Rservoir Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury. Check local advisories before you swim.
Whether Southern Mozingo Rservoir Lake is safe to swim in today is a call for the Missouri Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Southern Mozingo Rservoir Lake
These are the measurements Missouri DNR publishes for Southern Mozingo Rservoir Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 60 µg/L. TSI 63.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 60µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 63 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Southern Mozingo Rservoir Lake
Answers come straight from the public measurements and survey records on this page.
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.
Column height runs from this lake’s coldest month (77°F) to its warmest (82°F).
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
Surface area
1,009 acres
Public access
Yes
Listed by Missouri DNR
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
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Stays near Southern Mozingo Rservoir Lake
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Fishing Southern Mozingo Rservoir Lake
Water Quality Trend: Improving
Based on 5 years of monitoring (2020–2024).
Water clarity
Improving4 years
Phosphorus
Improving-2.87 µg/L/yr5 years
Chlorophyll-a
Improving-5.88 µg/L/yr5 years
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)
EPA Impairment Status
Southern Mozingo Rservoir Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Fish consumption.
Source: EPA ATTAINS assessment unit MO_7402.00 · Official waterbody report
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.
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. Its water-quality measurements are published by Missouri DNR and shown on this page as reported.
What is the water quality of Southern Mozingo Rservoir Lake?
- Southern Mozingo Rservoir Lake in Nodaway County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Phosphorus: 60 µg/L. Surface area: 1009 acres.
Is Southern Mozingo Rservoir Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Southern Mozingo Rservoir Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury. 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.
Can I fish at Southern Mozingo Rservoir Lake?
- Southern Mozingo Rservoir Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Missouri's fish and wildlife agency, so check its current regulations before you go.
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
Where to stay at Missouri's top lakes, each with its readings
Missouri's cleanest lakes, ranked on agency measurements
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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)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Named boat-access points from the USGS National Boat Ramps inventory