Sugar Hollow Lake
Warren County, Missouri17 acresView mapDirections
Missouri DNR publishes the water-quality measurements for Sugar Hollow Lake. Here is what has been measured.
- Eutrophic
Sugar Hollow Lake in Warren County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Water clarity: 3.3 ft visibility. Phosphorus: 38 µg/L. Chlorophyll-a (algae): 15.4 µg/L. Surface area: 17 acres.
Sugar Hollow Lake is a 17-acre productive, nutrient-rich eutrophic lake in Warren County, Missouri. 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. 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 Sugar Hollow 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 Sugar Hollow Lake
These are the measurements Missouri DNR publishes for Sugar Hollow Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 3.3 ft of visibility. Phosphorus 38 µg/L. Chlorophyll-a 15.4 µg/L. TSI 58.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 38µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 15.4µg/L | Fair GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 58 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Sugar Hollow Lake
Answers come straight from the public measurements and survey records on this page.
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.
Column height runs from this lake’s coldest month (61°F) to its warmest (85°F).
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
Surface area
17 acres
No bathymetric survey has been published for Sugar Hollow Lake, so its depth is not documented here.
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Stays near Sugar Hollow Lake
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Fishing Sugar Hollow Lake
Water Quality Trend: Worsening
Based on 5 years of monitoring (2020–2024).
Water clarity
Worsening5 years
Phosphorus
Worsening+6.52 µg/L/yr5 years
Chlorophyll-a
Improving-0.46 µg/L/yr5 years
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
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. Its water-quality measurements are published by Missouri DNR and shown on this page as reported.
What is the water quality of Sugar Hollow Lake?
- Sugar Hollow Lake in Warren County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. 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?
- Nutrient and algae readings are 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
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Other 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)
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.