Tri City Lake
Boone County, Missouri28 acresView mapDirections
Missouri DNR publishes the water-quality measurements for Tri City Lake. Here is what has been measured.
- Eutrophic
- Public access
Tri City Lake in Boone County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Phosphorus: 76 µg/L. Chlorophyll-a (algae): 24.7 µg/L. Surface area: 28 acres.
Tri City Lake is a 28-acre productive, nutrient-rich eutrophic lake in Boone County, Missouri. Phosphorus level is improving over recent sampling years. Limited fish-species data available. Public access is available. Compared to the 9 other monitored lakes in Boone County, Tri City Lake ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-05-22. Methodology: how these readings are compared.
Swimming conditions
Readings onlyAlgae risk
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Tri City 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 Tri City Lake
These are the measurements Missouri DNR publishes for Tri City 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 76 µg/L. Chlorophyll-a 24.7 µg/L. TSI 64.
| 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 | 76µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 24.7µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 64 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Tri City Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Tri City Lake typically sits around 76°F at the surface in September. Summer average is about 83°F. Usually warmest in Jul (about 85°F) and coldest in May (about 68°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (68°F) to its warmest (85°F).
Typical surface water temperature by month, from 54 field readings (2010–2024) via the EPA Water Quality Portal. See the full Tri City Lake water temperature breakdown →
Lake Details
Surface area
28 acres
Public access
Yes
Listed by Missouri DNR
No bathymetric survey has been published for Tri City Lake, so its depth is not documented here.
Stays via Stay22
Stays near Tri City Lake
Compare lakeside cabins, hotels, and vacation rentals near Tri City Lake in Boone 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Tri City Lake are listed below.
Top-rated places to stay near Tri City Lake
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Fishing Tri City Lake
Water Quality Trend: Stable
Based on 4 years of monitoring (2020–2023).
Phosphorus
Improving-28.4 µg/L/yr4 years
Chlorophyll-a
Worsening+0.76 µg/L/yr4 years
Reservoir Info (USACE NID)
Tri City Lake is a man-made reservoir impounded by the Tri-City Community Lake Dam (completed 1957), built primarily for recreation on the TR-SILVER FORK CREEK; earth-type dam, 25 ft tall.
- Surface area
- 28 ac
- Normal storage
- 233 ac-ft
- Max storage
- 374 ac-ft
- Drainage area
- 400 sq mi
- Hazard class
- Low
- Owner
- MO DEPT OF CONSERVATION
Source: USACE National Inventory of Dams, NID ID MO10102 · Operator website · Matched by proximity (0.08 km)
Regulated Pollution Sources Nearby
7 EPA-permitted facilities operate within about 5 miles of Tri City Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 5 facilities have a reported Clean Water Act violation in the past three years.
- Centralia WwtfCentralia · 3.6 mi away · NPDES MO0028789MajorRecent violation
- Little City MhpCentralia · 3 mi away · NPDES MO0057363Recent violation
- Sunnydale Adventist Academy WwtfCentralia · 3.9 mi away · NPDES MO0044563Recent violation
- Sturgeon WwtfSturgeon · 4.7 mi away · NPDES MO0052027Recent violation
- Bcrsd Sunnyslope Subd WwtfHallsville · 4.9 mi away · NPDES MO0095354Recent violation
- Jbs Live Pork Centralia Feed MillCentralia · 3.2 mi away · NPDES MONX00514
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 Boone County
Frequently asked questions about Tri City Lake
Where is Tri City Lake?
- Tri City Lake is a lake in Boone County, Missouri. Its water-quality measurements are published by Missouri DNR and shown on this page as reported.
What is the water quality of Tri City Lake?
- Tri City Lake in Boone County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Phosphorus: 76 µg/L. Chlorophyll-a (algae): 24.7 µg/L. Surface area: 28 acres.
Is Tri City Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Tri City Lake?
- Tri City Lake typically sits around 76°F at the surface in September, from 54 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Can I fish at Tri City Lake?
- Public access to Tri City Lake is listed as yes on the lake record. 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 Tri City Lake across LakeQuality
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Where this data comes from
21 measurements from 1 monitoring station, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC21 samples · 2020–2024
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)