Rock Lake Village Lake is a 27-acre mesotrophic lake in Johnson County, Missouri. Water quality is graded B based on 3 sampling years through 2024. Overall water quality is improving over recent sampling years. Compared to the 4 other monitored lakes in Johnson County, Rock Lake Village Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-08-27. Grade methodology: LakeGrade methodology.
Watch Rock Lake Village Lake water quality
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Murky, only visible to about 4.3 ft. Phosphorus level: 16 µg/L. Chlorophyll-a: 4.8 µg/L. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.3 ft | D |
| Phosphorus | 16 µg/L | A |
| Chlorophyll-a (Algae) | 4.8 µg/L | A |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 27 acres |
Where to stay near Rock Lake Village Lake
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Fishing Rock Lake Village Lake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.022 m/yr | 5 |
| Phosphorus | ↑ Improving | -0.9 µg/L/yr | 5 |
| Chlorophyll-a | ↑ Improving | -0.63 µg/L/yr | 5 |
Water Temperature
Rock Lake Village Lake averages about 79°F at the surface in summer, usually warmest in Jul (about 82°F) and coldest in Apr (about 65°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 27 field readings (2020–2024) via the EPA Water Quality Portal. See the full Rock Lake Village Lake water temperature breakdown →
Location
County Ranking
Ranked #1 of 5 lakes in Johnson County
Nearby Lakes in Johnson County
Explore Rock Lake Village Lake across LakeGrade
More Missouri Lake Rankings
Other Grade B Lakes in Missouri
Mesotrophic Lakes in Missouri
More records, surveys & data sources
Reservoir Info (USACE NID)
Rock Lake Village Lake is a man-made reservoir impounded by the Rock Lake Village Dam (completed 2006) on the Trib. Blackwater river; earth-type dam, 66 ft tall and 730 ft long.
- Surface area
- 27 ac
- Normal storage
- 540 ac-ft
- Max storage
- 585 ac-ft
- Drainage area
- 0.11 sq mi
- Hazard class
- High
Source: USACE National Inventory of Dams, NID ID MO40148 · Operator website
Regulated Pollution Sources Nearby
5 EPA-permitted facilities operate within about 5 miles of Rock Lake Village Lake under Clean Water Act (NPDES) discharge permits. 3 facilities have a reported Clean Water Act violation in the past three years.
- Republic Foods FacilityLone Jack · 1.9 mi away · NPDES MO0139009Recent violation
- Powell Gardens WwtfsKingsville · 2 mi away · NPDES MO0123501Recent violation
- Shell Xpress Kingsville LlcKingsville · 2.4 mi away · NPDES MO0124729Recent violation
- Powell'S Creekside HavenKingsville · 1.5 mi away · NPDES MO0139840
- Maplewood Estates WwtfHolden · 4.9 mi away · NPDES MO0127167
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.
Data Sources
Water quality data from the EPA Water Quality Portal
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-08-27
Monitoring stations: 1