St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake

St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI near 49 places St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. At 78 ft of maximum depth, St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. At 8,393 acres, St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake is one of the larger lakes in Washington County, with 124.5 miles of shoreline supporting multiple distinct use patterns. Within Washington County's 31 graded lakes, St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake ranks 20 — below the local median, though not at the bottom.

Eurasian watermilfoil is established at St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake, which can dampen recreational access and pressure the native plant community. Muskie are on the species list at St. Croix 1.5 Mi. Upstream of Point Douglas Dr Lake, alongside the lake's 36 other documented fish. 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.