Sugar Hollow Lake
Warren County, Missouri17 acresView mapDirections
Nutrients and algae sit mid-range for this region.
↑ up from D at the last regrade
- Eutrophic
- #11 of 16 in the county
Sugar Hollow Lake in Warren County, Missouri has a water quality grade of C (Fair). Water clarity: 3.3 ft visibility. Phosphorus: 38 µg/L. Chlorophyll-a (algae): 15.4 µg/L. Surface area: 17 acres.
- Clarity
- 3.3 ft
- Typical in September
- 78°F
- Area
- 17 acres
- Type
- Eutrophic
- Phosphorus
- 38 µg/L
- Chlorophyll-a
- 15.4 µg/L
- Trend
- ↓ Declining
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Stays near Sugar Hollow Lake
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Watch Sugar Hollow Lake’s letter
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Sugar Hollow Lake is a 17-acre productive, nutrient-rich eutrophic lake in Warren County, Missouri. Water quality is graded C based on 2 sampling years through 2021. Overall water quality is declining over recent sampling years. Compared to the 15 other monitored lakes in Warren County, Sugar Hollow Lake ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2021-09-17. 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 C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: C (Fair)
Very murky, less than 3.3 ft of visibility. Phosphorus 38 µg/L. Chlorophyll-a 15.4 µg/L. TSI 58. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.3 ft | Not graded |
| Phosphorus | 38 µg/L | Good |
| Chlorophyll-a (Algae) | 15.4 µg/L | Fair |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Water Temperature
Sugar Hollow Lake typically sits around 78°F at the surface in September. Summer average is about 82°F. Usually warmest in Jul (about 85°F) and coldest in Apr (about 61°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 86 field readings (2010–2024) via the EPA Water Quality Portal. See the full Sugar Hollow Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 17 acres |
No bathymetric survey has been published for Sugar Hollow Lake, so its depth is not documented here.
Fishing Sugar Hollow 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)
Sugar Hollow Lake is a man-made reservoir impounded by the Sugar Hollow Dam (completed 1968), built primarily for recreation on the TR-WOLF CREEK; earth-type dam, 43 ft tall and 420 ft long.
- Surface area
- 17 ac
- Normal storage
- 178 ac-ft
- Max storage
- 326 ac-ft
- Drainage area
- 1.52 sq mi
- Hazard class
- High
- Owner
- LAKE SHERWOOD ESTATES HOA
Source: USACE National Inventory of Dams, NID ID MO30522 · Operator website
County Ranking
Ranked #11 of 16 lakes in Warren County
Nearby Lakes With Higher Grades
Sugar Hollow Lake holds Grade C. 2 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 Sugar Hollow Lake
Where is Sugar Hollow Lake?
- Sugar Hollow Lake is a lake in Warren County, Missouri. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Sugar Hollow Lake?
- Sugar Hollow Lake in Warren County, Missouri has a water quality grade of C (Fair). Water clarity: 3.3 ft visibility. Phosphorus: 38 µg/L. Chlorophyll-a (algae): 15.4 µg/L. Surface area: 17 acres.
Is Sugar Hollow Lake safe to swim in?
- The C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Sugar Hollow Lake?
- Sugar Hollow Lake typically sits around 78°F at the surface in September, from 86 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Explore Sugar Hollow Lake across LakeQuality
More Missouri Lake Rankings
Other Grade C Lakes in Missouri
Eutrophic Lakes in Missouri
Where this data comes from
45 measurements from 1 monitoring station, 2020–2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC45 samples · 2020–2021
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.