Robin Hood Lake
Warren County, Missouri9 acresView mapDirections
Nutrients and algae run above the regional average.
- Eutrophic
- #16 of 16 in the county
Robin Hood Lake in Warren County, Missouri has a water quality grade of D (Nutrient-rich). Water clarity: 3 ft visibility. Phosphorus: 58 µg/L. Chlorophyll-a (algae): 20.7 µg/L. Surface area: 9 acres.
- Clarity
- 3 ft
- Typical in September
- 76°F
- Area
- 9 acres
- Type
- Eutrophic
- Phosphorus
- 58 µg/L
- Chlorophyll-a
- 20.7 µg/L
- Trend
- ↓ Declining
Stays via Stay22
Stays near Robin Hood Lake
Compare lakeside cabins, hotels, and vacation rentals near Robin Hood 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Robin Hood Lake are listed below.
Top-rated places to stay near Robin Hood Lake
Prices for Sep 11–13, 4 adults. Change dates on the map below.
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Watch Robin Hood Lake’s letter
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Robin Hood Lake is a 9-acre productive, nutrient-rich eutrophic lake in Warren County, Missouri. Water quality is graded D based on 2 sampling years through 2024. Overall water quality is declining over recent sampling years. Compared to the 15 other monitored lakes in Warren County, Robin Hood Lake ranks #16 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-09-14. Grade methodology: LakeQuality methodology.
Swimming Safety
Grade onlyAlgae risk
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 3 ft of visibility. Phosphorus 58 µg/L. Chlorophyll-a 20.7 µg/L. TSI 62. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 ft | Not graded |
| Phosphorus | 58 µg/L | Poor |
| Chlorophyll-a (Algae) | 20.7 µg/L | Poor |
| Trophic State Index (TSI) | 62 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Water Temperature
Robin Hood Lake typically sits around 76°F at the surface in September. Summer average is about 81°F. Usually warmest in Jul (about 84°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 93 field readings (2010–2024) via the EPA Water Quality Portal. See the full Robin Hood Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 9 acres |
No bathymetric survey has been published for Robin Hood Lake, so its depth is not documented here.
Fishing Robin Hood 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 |
Reservoir Info (USACE NID)
Robin Hood Lake is a man-made reservoir impounded by the Lake Robin Hood Dam (completed 1970), built primarily for recreation on the TR-WOLF CREEK; earth-type dam, 34 ft tall.
- Surface area
- 9 ac
- Normal storage
- 78 ac-ft
- Max storage
- 164 ac-ft
- Drainage area
- 460 sq mi
- Hazard class
- Low
- Owner
- LK SHERWOOD ESTATES HOA
Source: USACE National Inventory of Dams, NID ID MO10447 · Operator website
County Ranking
Ranked #16 of 16 lakes in Warren County
Nearby Lakes With Higher Grades
Robin Hood Lake holds Grade D. 3 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Warren County
Frequently asked questions about Robin Hood Lake
Where is Robin Hood Lake?
- Robin Hood Lake is a lake in Warren County, Missouri. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Robin Hood Lake?
- Robin Hood Lake in Warren County, Missouri has a water quality grade of D (Nutrient-rich). Water clarity: 3 ft visibility. Phosphorus: 58 µg/L. Chlorophyll-a (algae): 20.7 µg/L. Surface area: 9 acres.
Is Robin Hood Lake safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Robin Hood Lake?
- Robin Hood Lake typically sits around 76°F at the surface in September, from 93 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Explore Robin Hood Lake across LakeQuality
More Missouri Lake Rankings
Other Grade D Lakes in Missouri
Eutrophic Lakes in Missouri
Where this data comes from
69 measurements from 1 monitoring station, 2022–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC69 samples · 2022–2024
Analytical methods
- Depth, Secchi disk in meters
- 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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.