Izaak Walton Lake
Vernon County, Missouri10 acresView mapDirections
Missouri DNR publishes the water-quality measurements for Izaak Walton Lake. Here is what has been measured.
- Public access
- Limited data
Izaak Walton Lake in Vernon County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Water clarity: 1.5 ft visibility. Phosphorus: 280 µg/L. Chlorophyll-a (algae): 123.1 µg/L. Surface area: 10 acres.
Izaak Walton Lake is a 10-acre lake in Vernon County, Missouri. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2020-08-21. Methodology: how these readings are compared.
What Izaak Walton Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Izaak Walton 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 Izaak Walton Lake
These are the measurements Missouri DNR publishes for Izaak Walton 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 1.5 ft of visibility. Phosphorus 280 µg/L. Chlorophyll-a 123.1 µg/L. TSI 78.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 280µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 123µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 78 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Izaak Walton Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
10 acres
Public access
Yes
Listed by Missouri DNR
No bathymetric survey has been published for Izaak Walton Lake, so its depth is not documented here.
Recreation & Access
- Izaac Walton Lake (Nevada)Public
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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Fishing Izaak Walton Lake
Reservoir Info (USACE NID)
Izaak Walton Lake is a man-made reservoir impounded by the Izaak Walton Lake Dam (completed 1926), built primarily for recreation on the TR TO WHITE BRANCH; earth-type dam, 25 ft tall.
- Surface area
- 10 ac
- Normal storage
- 67 ac-ft
- Max storage
- 134 ac-ft
- Drainage area
- 1,000 sq mi
- Hazard class
- High
- Owner
- CITY OF NEVADA
Source: USACE National Inventory of Dams, NID ID MO20048 · Operator website
Regulated Pollution Sources Nearby
6 EPA-permitted facilities operate within about 5 miles of Izaak Walton Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 2 facilities have a reported Clean Water Act violation in the past three years.
- Nevada WwtpNevada · 1.7 mi away · NPDES MO0089109MajorRecent violation
- Camp Clark Training Site WwtfNevada · 4.7 mi away · NPDES MO0037052Recent violation
- Nf Protein Nevada PlantNevada · 1.5 mi away · NPDES MO0137766
- Vernon County Meats LlcNevada · 1.8 mi away · NPDES MONX00946
- 3M Company (Nevada, Mo)Nevada · 2.4 mi away · NPDES MO0111082
- Vernon County Sewer Dist-Rolling MeadowsNevada · 3 mi away · NPDES MO0042153
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 Vernon County
Frequently asked questions about Izaak Walton Lake
Where is Izaak Walton Lake?
- Izaak Walton Lake is a lake in Vernon County, Missouri. Its water-quality measurements are published by Missouri DNR and shown on this page as reported.
What is the water quality of Izaak Walton Lake?
- Izaak Walton Lake in Vernon County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Water clarity: 1.5 ft visibility. Phosphorus: 280 µg/L. Chlorophyll-a (algae): 123.1 µg/L. Surface area: 10 acres.
Is Izaak Walton Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Izaak Walton Lake?
- Izaak Walton Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Izaac Walton Lake (Nevada). Public access is listed as yes.
Can I fish at Izaak Walton Lake?
- Izaak Walton Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Missouri's fish and wildlife agency, so check its current regulations before you go.
Explore Izaak Walton Lake across LakeQuality
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Where this data comes from
3 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Missouri Dept. of Natural Resources
MDNR3 samples · 2020
Analytical methods
- Depth, Secchi disk in meters
- Nitrogen and Phosphorus, Total, Whole-water, Alkaline Persulfate Digest
- 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)
Named boat-access points from the USGS National Boat Ramps inventory