Lake Tyler E
Smith County, Texas3,584 acresView mapDirections
Nutrients and algae sit mid-range for this region.
- Eutrophic
- Impaired · Algal growth
- #2 of 5 in the county
- 52 ft max depth
- Public access
Lake Tyler E in Smith County, Texas has a water quality grade of C (Fair). Water clarity: 3.3 ft visibility. Phosphorus: 25 µg/L. Chlorophyll-a (algae): 25.8 µg/L. Surface area: 3584 acres.
- Clarity
- 3.3 ft
- Max depth
- ~52 ft est.
- Area
- 3,584 acres
- Type
- Eutrophic
- Phosphorus
- 25 µg/L
- Chlorophyll-a
- 25.8 µg/L
- Trend
- ↓ Declining
- Public access
- Yes
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Watch Lake Tyler E’s letter
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Lake Tyler E is a 3,584-acre productive, nutrient-rich eutrophic lake in Smith County, Texas with an estimated average depth of about 52 feet. Water quality is graded C based on 2 sampling years through 2025. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 4 other monitored lakes in Smith County, Lake Tyler E ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled 2025-09-02. Grade methodology: LakeQuality methodology.
What Lake Tyler E is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
- Big water3,584 acres
Swimming Safety
Grade onlyAlgae risk
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The C is nutrients and algae, not a swimming clearance. Lake Tyler E is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.
Water Quality Grade: C (Fair)
Very murky, less than 3.3 ft of visibility. Phosphorus 25 µg/L. Chlorophyll-a 25.8 µg/L. TSI 58. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.3 ft | Not graded |
| Phosphorus | 25 µg/L | Good |
| Chlorophyll-a (Algae) | 25.8 µg/L | Fair |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~52 ft est. |
| Average Depth | ~43 ft est. |
| Surface Area | 3,584 acres |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Texas has not published bathymetry for Lake Tyler E.
Lake Size & Watershed
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.
Recreation & Access
- Omen RoadPublic
- Old Landing RoadPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Tyler E
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.079 m/yr | 6 |
| Phosphorus | ↑ Improving | -1.74 µg/L/yr | 5 |
| Chlorophyll-a | ↓ Declining | +3.5 µg/L/yr | 6 |
Reservoir Info (USACE NID)
Lake Tyler E is a man-made reservoir impounded by the Mud Creek Dam (completed 1967), built primarily for water supply on the Mud Creek; earth-type dam, 57 ft tall and 4,390 ft long.
- Surface area
- 3,584 ac
- Normal storage
- 43,000 ac-ft
- Max storage
- 85,010 ac-ft
- Drainage area
- 62 sq mi
- Hazard class
- High
- Owner
- CITY OF TYLER
Source: USACE National Inventory of Dams, NID ID TX00244 · Operator website · Matched by proximity (0.34 km)
EPA Impairment Status
Lake Tyler E is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit TX-0613_03 · Official waterbody report · Matched by proximity (2.01 km)
County Ranking
Ranked #2 of 5 lakes in Smith County
Nearby Lakes With Higher Grades
Lake Tyler E holds Grade C. One nearby lake has a higher nutrient-and-algae grade — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Smith County
Frequently asked questions about Lake Tyler E
Where is Lake Tyler E?
- Lake Tyler E is a lake in Smith County, Texas. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Tyler E?
- Lake Tyler E in Smith County, Texas has a water quality grade of C (Fair). Water clarity: 3.3 ft visibility. Phosphorus: 25 µg/L. Chlorophyll-a (algae): 25.8 µg/L. Surface area: 3584 acres.
Is Lake Tyler E safe to swim in?
- The C is nutrients and algae, not a swimming clearance. Lake Tyler E is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.
How deep is Lake Tyler E?
- No published bathymetric survey covers Lake Tyler E, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 52 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 3584 acres.
Are there boat ramps on Lake Tyler E?
- Lake Tyler E has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Omen Road, Old Landing Road. Public access is listed as yes.
Explore Lake Tyler E across LakeQuality
More Texas Lake Rankings
Other Grade C Lakes in Texas
Eutrophic Lakes in Texas
Where this data comes from
52 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Texas Commission on Environmental Quality
TCEQMAIN52 samples · 2020–2025
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory