What is the cleanest lake near Nla Lake?

Lake: Ward Lake in Thurston County holds a Grade A water quality score and is 1.3 miles from Nla Lake.

Why is Nla Lake not Grade A?

Nla Lake holds Grade D, with about 4.9 ft of water clarity and 46029.7 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 Nla Lake in Washington, with strictly higher numeric grade scores and sufficient monitoring data.

Cleaner Lakes Than Nla Lake, Top 4 Within 30 Miles, LakeQuality

Cleaner Lakes Than Nla Lake

4 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.

Nla Lake carries a Grade D (Poor) water quality score. Within 30 miles, 4 lakes hold a higher grade. Lake: Ward Lake (Thurston County, Grade A, 1.3 mi away) is the closest meaningful upgrade.

Lake: Ward Lake

Thurston County, Washington · 1.3 mi from Nla Lake

+Two grade letters higher (D → A)
+Lower phosphorus (10.5 vs 46029.7 µg/L)

Lake: Hicks Lake

Thurston County, Washington · 3.4 mi from Nla Lake

+Two grade letters higher (D → A)
+Lower phosphorus (16 vs 46029.7 µg/L)

Lake: Barnes Lake

Thurston County, Washington · 2.7 mi from Nla Lake

+Two grade letters higher (D → B)
+Lower phosphorus (27 vs 46029.7 µg/L)

Lake: Pattison Lake

Thurston County, Washington · 4.6 mi from Nla Lake

+Two grade letters higher (D → B)
+Lower phosphorus (26.5 vs 46029.7 µg/L)

Reading the cohort

4 cleaner lakes sit within 30 miles of Nla Lake in the EPA water-quality dataset. With that many higher-grade neighbors close by, Nla Lake's Grade D reflects something specific to the lake itself — not a regional water-quality ceiling. The neighbor list below isn't a small set of marginal upgrades; it's a real cohort of meaningfully cleaner choices for the same Washington weekend.

The closest cleaner alternative — Lake: Ward Lake in Thurston County, Grade A — sits 1.3 miles from Nla Lake. At that distance, the substitution cost is essentially zero: same drive time, same regional access, demonstrably cleaner water on the EPA indicators. For repeat visitors who care about clarity or phosphorus levels, swapping the routine to Lake: Ward Lake is mostly a habit change rather than a logistics change.

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.