Sherwood Lake is a 145-acre mesotrophic lake in Warren County, Missouri. Water quality is graded B based on 3 sampling years through 2024. Overall water quality is declining over recent sampling years. Compared to the 15 other monitored lakes in Warren County, Sherwood Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-09-14. Grade methodology: LakeGrade methodology.
Watch Sherwood Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Murky, only visible to about 4.9 ft. Phosphorus level: 17.8 µg/L. Chlorophyll-a: 4.3 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.9 ft | D |
| Phosphorus | 17.8 µg/L | A |
| Chlorophyll-a (Algae) | 4.3 µg/L | A |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 145 acres |
Where to stay near Sherwood Lake
Compare lakeside cabins, hotels, and vacation rentals near Sherwood Lake in Warren 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.
Top-rated places to stay near Sherwood Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Sherwood Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Sherwood Lake — straight to your inbox. No spam, unsubscribe anytime.
Planning a whole trip? See where to stay at Missouri’s top lakes →
Fishing Sherwood Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.062 m/yr | 5 |
| Phosphorus | ↓ Declining | +6.52 µg/L/yr | 5 |
| Chlorophyll-a | ↑ Improving | -0.46 µg/L/yr | 5 |
Water Temperature
Sherwood Lake averages about 84°F at the surface in summer, usually warmest in Jul (about 86°F) and coldest in Apr (about 60°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 53 field readings (2018–2024) via the EPA Water Quality Portal.
Location
County Ranking
Ranked #5 of 16 lakes in Warren County
Nearby Lakes in Warren County
Explore Sherwood 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)
Sherwood Lake is a man-made reservoir impounded by the Lake Sherwood Dam (completed 1967), built primarily for recreation on the WOLF CREEK; earth-type dam, 67 ft tall and 1,000 ft long.
- Surface area
- 145 ac
- Normal storage
- 2,982 ac-ft
- Max storage
- 4,004 ac-ft
- Drainage area
- 4.59 sq mi
- Hazard class
- High
- Owner
- LAKE SHERWOOD ESTATES
Source: USACE National Inventory of Dams, NID ID MO10202 · Operator website
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Data Sources
Water quality data from the EPA Water Quality Portal
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-14
Monitoring stations: 1