Milan Lake North
Sullivan County, Missouri15 acresView mapDirections
Missouri DNR publishes the water-quality measurements for Milan Lake North. Here is what has been measured.
- Impaired · Algal growth
- 29 ft max depth
- Limited data
Milan Lake North in Sullivan County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Phosphorus: 51.8 µg/L. Chlorophyll-a (algae): 7.8 µg/L. Surface area: 15 acres.
Milan Lake North is a 15-acre lake in Sullivan County, Missouri with an estimated average depth of about 29 feet.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-07-30. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Milan Lake North is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.
Whether Milan Lake North 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 Milan Lake North
These are the measurements Missouri DNR publishes for Milan Lake North, 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 51.8 µg/L. Chlorophyll-a 7.8 µg/L. TSI 56.
| 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 | 51.8µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 7.8µg/L | Measured, not scored 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. | 56 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Milan Lake North
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Milan Lake North typically sits around 81°F at the surface in August. Summer average is about 80°F. Usually warmest in Jul (about 81°F) and coldest in May (about 70°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (70°F) to its warmest (81°F).
Typical surface water temperature by month, from 32 field readings (2010–2024) via the EPA Water Quality Portal. See the full Milan Lake North water temperature breakdown →
Lake Details
Max depth
~29 ft est.
Surface area
15 acres
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Missouri has not published bathymetry for Milan Lake North.
Lake Size & Watershed
Watershed (drainage) area
1 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.3 mi
HydroLAKES / HydroSHEDS
Elevation
883 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
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Stays near Milan Lake North
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Fishing Milan Lake North
Reservoir Info (USACE NID)
Milan Lake North is a man-made reservoir impounded by the Milan Lake Dam-North (completed 1911), built primarily for recreation on the TR-LOCUST CREEK; earth-type dam, 30 ft tall.
- Surface area
- 15 ac
- Normal storage
- 125 ac-ft
- Max storage
- 241 ac-ft
- Drainage area
- 190 sq mi
- Hazard class
- Low
- Owner
- CITY OF MILAN
All listed purposes: Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID MO10399 · Operator website
EPA Impairment Status
Milan Lake North 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.
Source: EPA ATTAINS assessment unit MO_7144.00 · Official waterbody report
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Milan Lake North under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 2 facilities have a reported Clean Water Act violation in the past three years.
- Milan WwtpMilan · 0.6 mi away · NPDES MO0048151MajorRecent violation
- Milan Motel WwtpMilan · 1.8 mi away · NPDES MO0122734Recent violation
- Auburn Hills WwtfMilan · 1.1 mi away · NPDES MO0119318
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 Sullivan County
Frequently asked questions about Milan Lake North
Where is Milan Lake North?
- Milan Lake North is a lake in Sullivan County, Missouri. Its water-quality measurements are published by Missouri DNR and shown on this page as reported.
What is the water quality of Milan Lake North?
- Milan Lake North in Sullivan County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Phosphorus: 51.8 µg/L. Chlorophyll-a (algae): 7.8 µg/L. Surface area: 15 acres.
Is Milan Lake North safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Milan Lake North is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.
What is the water temperature of Milan Lake North?
- Milan Lake North typically sits around 81°F at the surface in August, from 32 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
How deep is Milan Lake North?
- No published bathymetric survey covers Milan Lake North, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 29 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 15 acres.
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Where this data comes from
4 measurements from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC4 samples · 2024
Analytical methods
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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)
Lake size & watershed from HydroLAKES (HydroSHEDS)