1
CLong Lake
Meeker County, Minnesota · 4.2 mi from Collinwood Lake
- +Higher grade (D → C)
- ++3.6 ft water clarity
- +Lower phosphorus (33.5 vs 120.5 µg/L)
Cleaner Lakes Than Collinwood Lake
5 higher-graded lakes within 30 miles, ranked by grade improvement and proximity.
Collinwood Lake carries a Grade D (Poor) water quality score. Within 30 miles, 5 lakes hold a higher grade. Long Lake (Meeker County, Grade C, 4.2 mi away) is the closest meaningful upgrade.
2
CSpring Lake
Meeker County, Minnesota · 3.2 mi from Collinwood Lake
- +Higher grade (D → C)
- +Lower phosphorus (47 vs 120.5 µg/L)
3
CBrooks Lake
Wright County, Minnesota · 3.5 mi from Collinwood Lake
- +Higher grade (D → C)
- ++1.7 ft water clarity
- +Lower phosphorus (32 vs 120.5 µg/L)
4
CJennie Lake
Meeker County, Minnesota · 5.3 mi from Collinwood Lake
- +Higher grade (D → C)
- +Lower phosphorus (48.5 vs 120.5 µg/L)
5
CWashington Lake
Meeker County, Minnesota · 6.1 mi from Collinwood Lake
- +Higher grade (D → C)
- +Lower phosphorus (32.5 vs 120.5 µg/L)
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.