Ravenna Lake E of Ravenna
Buffalo County, Nebraska17 acresView mapDirections
This is the name Nebraska DEE records for this water. It can describe one sampling location rather than the water as a whole.
Nebraska DEE publishes the water-quality measurements for Ravenna Lake E of Ravenna. Here is what has been measured.
- Hypereutrophic
- Impaired · Mercury
- Public access
- Limited data
Ravenna Lake E of Ravenna in Buffalo County, Nebraska has water-quality measurements published by Nebraska DEE, shown here as reported. Chlorophyll-a (algae): 35.1 µg/L. Surface area: 17 acres.
Ravenna Lake E of Ravenna is a 17-acre highly nutrient-loaded hypereutrophic lake in Buffalo County, Nebraska. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available. Compared to the 1 other monitored lakes in Buffalo County, Ravenna Lake E of Ravenna ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, NDEE, last sampled 2019-09-24. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
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. Ravenna Lake E of Ravenna is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Whether Ravenna Lake E of Ravenna is safe to swim in today is a call for the Nebraska Department of Environment and Energy and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Ravenna Lake E of Ravenna
These are the measurements Nebraska DEE publishes for Ravenna Lake E of Ravenna, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Chlorophyll-a 35.1 µg/L. TSI 66.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading 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) | 35.1µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 66 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Ravenna Lake E of Ravenna
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
17 acres
Public access
Yes
Listed by Nebraska DEE
No bathymetric survey has been published for Ravenna Lake E of Ravenna, so its depth is not documented here.
Stays via Stay22
Stays near Ravenna Lake E of Ravenna
Compare lakeside cabins, hotels, and vacation rentals near Ravenna Lake E of Ravenna in Buffalo County, Nebraska — 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Ravenna Lake E of Ravenna are listed below.
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Fishing Ravenna Lake E of Ravenna
Water quality readings over time
2 seasons of samples on record (2018–2019). Calling a direction takes at least 4 years of the same measurement.
Chlorophyll-a
Improving-17.9 µg/L/yr2 years
Reservoir Info (USACE NID)
Ravenna Lake E of Ravenna is a man-made reservoir impounded by the Ravenna State Lake Dam (completed 1939), built primarily for recreation on the Tr-South Loup River; earth-type dam, 10 ft tall and 328 ft long.
- Surface area
- 17 ac
- Normal storage
- 48 ac-ft
- Max storage
- 120 ac-ft
- Drainage area
- 2 sq mi
- Hazard class
- Low
- Owner
- Buffalo County
Source: USACE National Inventory of Dams, NID ID NE00284 · Operator website · Matched by proximity (0.09 km)
EPA Impairment Status
Ravenna Lake E of Ravenna 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.
Source: EPA ATTAINS assessment unit NE-LO4-L0010 · Official waterbody report
Nearby Lakes in Buffalo County
Frequently asked questions about Ravenna Lake E of Ravenna
Where is Ravenna Lake E of Ravenna?
- Ravenna Lake E of Ravenna is in Buffalo County, Nebraska. This is the name Nebraska DEE records for this water. It can describe one sampling location rather than the water as a whole. Its water-quality measurements are published by Nebraska DEE and shown on this page as reported.
What is the water quality of Ravenna Lake E of Ravenna?
- Ravenna Lake E of Ravenna in Buffalo County, Nebraska has water-quality measurements published by Nebraska DEE, shown here as reported. Chlorophyll-a (algae): 35.1 µg/L. Surface area: 17 acres.
Is Ravenna Lake E of Ravenna safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Ravenna Lake E of Ravenna is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Can I fish at Ravenna Lake E of Ravenna?
- Public access to Ravenna Lake E of Ravenna is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Nebraska's fish and wildlife agency, so check its current regulations before you go.
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Where this data comes from
14 measurements from 1 monitoring station, 2018–2019. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Nebraska Department of Environment and Energy
21NEB001_WQX14 samples · 2018–2019
Analytical methods
- 447.0 ~ EPA; Chlorophyll a and b in phytoplankton by HPLC/UV
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