Weatherby Lake
Platte County, Missouri186 acresView mapDirections
Missouri DNR publishes the water-quality measurements for Weatherby Lake. Here is what has been measured.
- Mesotrophic
- Impaired · Algal growth
- 36 ft max depth
Weatherby Lake in Platte County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Water clarity: 6.2 ft visibility. Phosphorus: 16 µg/L. Chlorophyll-a (algae): 5.9 µg/L. Surface area: 186 acres.
Weatherby Lake is a 186-acre mesotrophic lake in Platte County, Missouri with an estimated average depth of about 36 feet. Overall water quality is improving over recent sampling years. Compared to the 2 other monitored lakes in Platte County, Weatherby Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-09-20. Methodology: how these readings are compared.
Weatherby Lake covers about 190 acres in Platte County. If you are planning to stay, you can search lake houses and cabins around Weatherby Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
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. Weatherby Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Weatherby 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 Weatherby Lake
These are the measurements Missouri DNR publishes for Weatherby Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 6.2 ft. Phosphorus 16 µg/L. Chlorophyll-a 5.9 µg/L. TSI 48.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 16µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 5.9µg/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. | 48 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Weatherby Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Weatherby 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 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 96 field readings (2010–2024) via the EPA Water Quality Portal. See the full Weatherby Lake water temperature breakdown →
Lake Details
Max depth
~36 ft est.
Surface area
186 acres
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Missouri has not published bathymetry for Weatherby Lake.
Lake Size & Watershed
Watershed (drainage) area
5 sq mi
HydroLAKES / HydroSHEDS
Shoreline
4.4 mi
HydroLAKES / HydroSHEDS
Elevation
906 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Stays via Stay22
Stays near Weatherby Lake
Compare lakeside cabins, hotels, and vacation rentals near Weatherby Lake in Platte 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.
Top-rated places to stay near Weatherby Lake
Prices for Oct 23–25, 4 adults. Change dates on the map below.
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Planning a whole trip? See where to stay at Missouri’s top lakes →
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Fishing Weatherby Lake
Water Quality Trend: Improving
Based on 4 years of monitoring (2020–2024).
Water clarity
Improving4 years
Phosphorus
Stable+0.07 µg/L/yr4 years
Chlorophyll-a
Stable+0.01 µg/L/yr4 years
Reservoir Info (USACE NID)
Weatherby Lake is a man-made reservoir impounded by the Weatherby Lake Dam (completed 1936), built primarily for recreation on the RUSH CREEK; earth-type dam, 85 ft tall and 1,100 ft long.
- Surface area
- 186 ac
- Normal storage
- 4,910 ac-ft
- Max storage
- 5,750 ac-ft
- Drainage area
- 4.3 sq mi
- Hazard class
- High
- Owner
- WEATHERBY LAKE IMPROVEMN
Source: USACE National Inventory of Dams, NID ID MO10690 · Operator website
EPA Impairment Status
Weatherby Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Fish consumption.
Source: EPA ATTAINS assessment unit MO_7071.00 · Official waterbody report
Regulated Pollution Sources Nearby
16 EPA-permitted facilities operate within about 5 miles of Weatherby Lake under Clean Water Act (NPDES) discharge permits, including 3 classified by the EPA as major dischargers. 4 facilities have a reported Clean Water Act violation in the past three years.
- Pcrsd Brush Creek WwtpParkville · 3.9 mi away · NPDES MO0119474MajorRecent violation
- Kansas City International AirportKansas City · 4.8 mi away · NPDES MO0114812MajorRecent violation
- Kansas City International Airport Mci MbKansas City · 4.5 mi away · NPDES MO0003263Major
- Parkville Extended Aeration WwtfParkville · 2.8 mi away · NPDES MO0113085Recent violation
- Heartland Presbyterian Center WwtfParkville · 4.2 mi away · NPDES MO0129534Recent violation
- Union Chapel Elementary SchoolParkville · 1.9 mi away · NPDES MO0085413
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 Platte County
Frequently asked questions about Weatherby Lake
Where is Weatherby Lake?
- Weatherby Lake is a lake in Platte County, Missouri. Its water-quality measurements are published by Missouri DNR and shown on this page as reported.
What is the water quality of Weatherby Lake?
- Weatherby Lake in Platte County, Missouri has water-quality measurements published by Missouri DNR, shown here as reported. Water clarity: 6.2 ft visibility. Phosphorus: 16 µg/L. Chlorophyll-a (algae): 5.9 µg/L. Surface area: 186 acres.
Is Weatherby Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Weatherby Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
What is the water temperature of Weatherby Lake?
- Weatherby Lake typically sits around 76°F at the surface in September, from 96 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
How deep is Weatherby Lake?
- No published bathymetric survey covers Weatherby Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 36 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 186 acres.
Explore Weatherby Lake across LakeQuality
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Where this data comes from
96 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
UMC96 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
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)