Laddie Lake

On the LakeGrade scale Laddie Lake grades a B, with clarity readings still being added and 22 µg/L of phosphorus placing it above the Minnesota median. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

A TSI near 49 places Laddie Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. At only 4 ft deep, Laddie Lake is shallow — wind keeps the water column mixed and sediment resuspension drives phosphorus levels harder to manage. Laddie Lake is small — 66 acres alongside 1.4 miles of shoreline — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Within Anoka County's 24 graded waters, Laddie Lake sits at rank 4, near the top of the local distribution.

No invasive species are currently listed at Laddie Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Laddie Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The lake lacks a documented public access point, so visitor use is limited. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.