Guthrie Lake
Logan County, Oklahoma274 acresView mapDirections
Oklahoma DEQ publishes the water-quality measurements for Guthrie Lake. Here is what has been measured.
- 45 ft max depth
- Limited data
Guthrie Lake in Logan County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 1.5 ft visibility. Surface area: 274 acres.
Guthrie Lake is a 274-acre lake in Logan County, Oklahoma with an estimated average depth of about 45 feet.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2022-09-12. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Guthrie Lake is safe to swim in today is a call for the Oklahoma Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Guthrie Lake
These are the measurements Oklahoma DEQ publishes for Guthrie 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. TSI 72.
| 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 | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading 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. | 72 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Guthrie Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~45 ft est.
Surface area
274 acres
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Oklahoma has not published bathymetry for Guthrie Lake.
Lake Size & Watershed
Watershed (drainage) area
13 sq mi
HydroLAKES / HydroSHEDS
Shoreline
3.1 mi
HydroLAKES / HydroSHEDS
Elevation
997 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.
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Fishing Guthrie Lake
Water quality readings over time
3 seasons of samples on record (2016–2022). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Stable3 years
Reservoir Info (USACE NID)
Guthrie Lake is a man-made reservoir impounded by the Guthrie Lake (completed 1919), built primarily for water supply on the Tributary to Cottonwood Creek; earth-type dam, 33 ft tall and 1,680 ft long.
- Surface area
- 274 ac
- Normal storage
- 2,246 ac-ft
- Max storage
- 2,709 ac-ft
- Drainage area
- 12.7 sq mi
- Hazard class
- High
- Owner
- City of Guthrie
Source: USACE National Inventory of Dams, NID ID OK02123 · Operator website
Nearby Lakes in Logan County
Frequently asked questions about Guthrie Lake
Where is Guthrie Lake?
- Guthrie Lake is a lake in Logan County, Oklahoma. Its water-quality measurements are published by Oklahoma DEQ and shown on this page as reported.
What is the water quality of Guthrie Lake?
- Guthrie Lake in Logan County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 1.5 ft visibility. Surface area: 274 acres.
Is Guthrie Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Guthrie Lake?
- No published bathymetric survey covers Guthrie Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 45 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 274 acres.
Explore Guthrie Lake across LakeQuality
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Where this data comes from
26 measurements from 3 monitoring stations, 2016–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- OWRB Lakes Monitoring
OKWRB-LAKES_WQX26 samples · 2016–2022
Analytical methods
- OWRB Lakes Field Data Collection
- Determination of Turbidity
Monitoring station identifiers (3)
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
Lake size & watershed from HydroLAKES (HydroSHEDS)