Alpine Lake
Warren County, Missouri325 acresView mapDirections
Missouri DNR publishes the water-quality measurements for Alpine Lake. Here is what has been measured.
- Oligotrophic
Alpine Lake in Warren County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Water clarity: 12.6 ft visibility. Phosphorus: 7 µg/L. Chlorophyll-a (algae): 1.5 µg/L. Surface area: 325 acres.
Alpine Lake is a 325-acre cold, clear oligotrophic lake in Warren County, Missouri. Overall water quality is improving over recent sampling years. Compared to the 15 other monitored lakes in Warren County, Alpine Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-09-14. Methodology: how these readings are compared.
What Alpine Lake is good for
From access and monitoring records, not editorial picks.
- Clear water12.6 ft of visibility
Swimming conditions
Readings onlyLow algae
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 Alpine 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 Alpine Lake
These are the measurements Missouri DNR publishes for Alpine Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 12.6 ft. Phosphorus 7 µg/L. Chlorophyll-a 1.5 µg/L. TSI 36.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 12.6ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 7µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 1.5µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 36 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Alpine Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Alpine Lake typically sits around 77°F at the surface in September. Summer average is about 81°F. Usually warmest in Jul (about 84°F) and coldest in Apr (about 59°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (59°F) to its warmest (84°F).
Typical surface water temperature by month, from 95 field readings (2010–2024) via the EPA Water Quality Portal. See the full Alpine Lake water temperature breakdown →
Lake Details
Surface area
325 acres
No bathymetric survey has been published for Alpine Lake, so its depth is not documented here.
Stays via Stay22
Stays near Alpine Lake
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Top-rated places to stay near Alpine Lake
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Fishing Alpine Lake
Water Quality Trend: Improving
Based on 4 years of monitoring (2020–2024).
Water clarity
Improving4 years
Phosphorus
Worsening+0.75 µg/L/yr4 years
Chlorophyll-a
Improving-0.07 µg/L/yr4 years
Reservoir Info (USACE NID)
Alpine Lake is a man-made reservoir impounded by the Alpine Lake Dam (completed 2000), built primarily for recreation on the CAVE CREEK; earth-type dam, 118 ft tall and 1,279 ft long.
- Surface area
- 325 ac
- Normal storage
- 10,266 ac-ft
- Max storage
- 14,260 ac-ft
- Drainage area
- 3.99 sq mi
- Hazard class
- High
- Owner
- INNSBROOK CORPORATION
Source: USACE National Inventory of Dams, NID ID MO32058 · Operator website
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Alpine Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Gateway Refrigerated WarehousesWarrenton · 3.4 mi away · NPDES MO0116459Recent violation
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.
Nearby Lakes in Warren County
Frequently asked questions about Alpine Lake
Where is Alpine Lake?
- Alpine 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 Alpine Lake?
- Alpine Lake in Warren County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Water clarity: 12.6 ft visibility. Phosphorus: 7 µg/L. Chlorophyll-a (algae): 1.5 µg/L. Surface area: 325 acres.
Is Alpine 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 Alpine Lake?
- Alpine Lake typically sits around 77°F at the surface in September, from 95 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Explore Alpine Lake across LakeQuality
Depth, room, public access, and the state wake-sport rules
Species activity outlook by water temperature and season
Where to stay at Missouri's top lakes, each with its readings
Missouri's cleanest lakes, ranked on agency measurements
More lakes in Missouri
Other Lakes in Missouri
Oligotrophic Lakes in Missouri
Where this data comes from
116 measurements from 1 monitoring station, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC116 samples · 2020–2024
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)
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.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)