What is the cleanest lake near Lake Bob Sandlin?

Lake Daingerfield Headwaters in Morris County holds a Grade A water quality score and is 20.5 miles from Lake Bob Sandlin.

Why is Lake Bob Sandlin not Grade A?

Lake Bob Sandlin holds Grade C, with about 3.9 ft of water clarity and 30 µg/L of phosphorus. The grade reflects measured water quality against Metropolitan Council thresholds. Cleaner alternatives nearby score higher on clarity, phosphorus, or chlorophyll-a.

Are these recommendations based on real data?

Yes. Every grade is calculated from EPA Water Quality Portal samples for the lake. Recommendations are limited to lakes within 30 miles of Lake Bob Sandlin in Texas, with strictly higher numeric grade scores and sufficient monitoring data.

Cleaner Lakes Than Lake Bob Sandlin, Top 1 Within 30 Miles, LakeQuality

Cleaner Lakes Than Lake Bob Sandlin

1 higher-graded lake within 30 miles, ranked by grade improvement and proximity.

Lake Bob Sandlin carries a Grade C (Fair) water quality score. Within 30 miles, 1 lake holds a higher grade. Lake Daingerfield Headwaters (Morris County, Grade A, 20.5 mi away) is the closest meaningful upgrade.

Lake Daingerfield Headwaters

Morris County, Texas · 20.5 mi from Lake Bob Sandlin

+Two grade letters higher (C → A)
++4.6 ft water clarity
+Lower phosphorus (20 vs 30 µg/L)

Reading the cohort

Just one nearby water body scores higher than Lake Bob Sandlin on the EPA metrics within a 30-mile radius. The single cleaner option (below) is the practical alternative; beyond that, the next-cleanest lakes sit farther out and warrant a longer drive only if the water-quality difference is the deciding factor.

The nearest cleaner alternative — Lake Daingerfield Headwaters in Morris County — sits 20.5 miles from Lake Bob Sandlin, putting it firmly in "destination trip" rather than "neighborhood swap" range. The water-quality gap has to be the deciding factor; for a casual outing, Lake Bob Sandlin is the practical choice and the cleaner options are reserved for purpose-specific visits.

The EPA water-quality grading combines clarity (Secchi depth), phosphorus, and chlorophyll-a measurements from state environmental sampling. A higher letter grade reflects measurably cleaner water on those indicators, not subjective beauty or access quality — a Grade A lake might have worse boat-launch facilities or shoreline access than a Grade C neighbor, so the ranking is one input alongside the rest of trip planning. See the methodology page for the full grading formula.

How this list is built

Every lake on LakeQuality has a calculated grade from EPA Water Quality Portal samples — secchi depth, total phosphorus, and chlorophyll-a measured against Metropolitan Council thresholds. To suggest cleaner alternatives, we filter lakes within 30 miles to those with a strictly higher numeric score, then rank by grade improvement with a small proximity tiebreak. Cross-state and limited-data lakes are excluded so the list stays locally relevant.