Walter E Long Lake Eastern Arm
Travis County, TexasView mapDirections
TCEQ publishes the water-quality measurements for Walter E Long Lake Eastern Arm. Here is what has been measured.
- Eutrophic
- Limited data
Walter E Long Lake Eastern Arm in Travis County, Texas has water-quality measurements published by TCEQ, shown here as reported. Water clarity: 4.2 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 15 µg/L.
Walter E Long Lake Eastern Arm is a productive, nutrient-rich eutrophic lake in Travis County, Texas. Overall water quality is improving over recent sampling years. Compared to the 2 other monitored lakes in Travis County, Walter E Long Lake Eastern Arm ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled 2024-07-31. 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. Check local advisories before you swim.
Whether Walter E Long Lake Eastern Arm is safe to swim in today is a call for the Texas Commission on Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Walter E Long Lake Eastern Arm
These are the measurements TCEQ publishes for Walter E Long Lake Eastern Arm, 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 4.2 ft. Phosphorus 30 µg/L. Chlorophyll-a 15 µg/L. TSI 56.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 30µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 15µg/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. | 56 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Stays near Walter E Long Lake Eastern Arm
Compare lakeside cabins, hotels, and vacation rentals near Walter E Long Lake Eastern Arm in Travis County, Texas — 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 Walter E Long Lake Eastern Arm are listed below.
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Fishing Walter E Long Lake Eastern Arm
Water Quality Trend: Improving
Based on 4 years of monitoring (2021–2024).
Water clarity
Worsening4 years
Phosphorus
Improving-6.43 µg/L/yr3 years
Chlorophyll-a
Improving-3.36 µg/L/yr4 years
Nearby Lakes in Travis County
Frequently asked questions about Walter E Long Lake Eastern Arm
Where is Walter E Long Lake Eastern Arm?
- Walter E Long Lake Eastern Arm is a lake in Travis County, Texas. Its water-quality measurements are published by TCEQ and shown on this page as reported.
What is the water quality of Walter E Long Lake Eastern Arm?
- Walter E Long Lake Eastern Arm in Travis County, Texas has water-quality measurements published by TCEQ, shown here as reported. Water clarity: 4.2 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 15 µg/L.
Is Walter E Long Lake Eastern Arm safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Walter E Long Lake Eastern Arm across LakeQuality
10.6 mi away · 15 ft
11.2 mi away · cable-pulled, no boat wake
Species activity outlook by water temperature and season
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Where this data comes from
22 measurements from 1 monitoring station, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Texas Commission on Environmental Quality
TCEQMAIN22 samples · 2020–2024
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.