Ubam Lake
Marion County, Alabama1,470 acresView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- 52 ft max depth
- Limited data
Ubam Lake in Marion County, Alabama is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 1470 acres.
- Max depth
- ~52 ft est.
- Area
- 1,470 acres
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Watch Ubam Lake’s letter
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Why Ubam Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Ubam Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by ADEM and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Ubam Lake is a 1,470-acre lake in Marion County, Alabama with an estimated average depth of about 52 feet.
Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2013-04-30. Grade methodology: LakeQuality methodology.
What Ubam Lake is good for
From access and monitoring records, not editorial picks.
- Big water1,470 acres
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Ubam Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~52 ft est. |
| Average Depth | ~36 ft est. |
| Surface Area | 1,470 acres |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Alabama has not published bathymetry for Ubam Lake.
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.
Fishing Ubam Lake
Reservoir Info (USACE NID)
Ubam Lake is a man-made reservoir impounded by the Upper Bear Creek Dam (completed 1978), built primarily for flood risk reduction on the Bear Creek; earth-type dam, 85 ft tall and 1,515 ft long.
- Surface area
- 1,470 ac
- Normal storage
- 37,400 ac-ft
- Max storage
- 40,100 ac-ft
- Drainage area
- 113 sq mi
- Hazard class
- High
- Owner
- TVA
All listed purposes: Flood Risk Reduction;Other;Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID AL09301 · Operator website · Matched by proximity (0.13 km)
Graded lakes near Ubam Lake
Ubam Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Marion County
Frequently asked questions about Ubam Lake
Where is Ubam Lake?
- Ubam Lake is a lake in Marion County, Alabama. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Ubam Lake?
- Ubam Lake in Marion County, Alabama is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 1470 acres.
Is Ubam Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Ubam Lake?
- No published bathymetric survey covers Ubam Lake, 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 1470 acres.
Explore Ubam Lake across LakeQuality
2 documented falls within 15 mi, nearest Kinlock Falls
Species activity outlook by water temperature and season
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Where this data comes from
3 measurements from 1 monitoring station, 2013. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- ALABAMA DEPT. OF ENVIRONMENTAL MANAGEMENT - WATER QUALITY DATA
21AWIC3 samples · 2013
Analytical methods
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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
Lake size & watershed from HydroLAKES (HydroSHEDS)