Bathymetry and Water-Quality Data of Surface Water Bodies in Cook County, Illinois, 2025

In 2025, the U.S. Geological Survey (USGS), in collaboration with the Cook County Bureau of Technology (BOT), carried out comprehensive hydrographic and water-quality surveys, and activity and disturbance assessments of 34 total water bodies within Cook County, Illinois. These surveys and assessments describe the bathymetry, water-quality conditions, and on-site field crew observations and impressions for each water body and its surrounding catchment area. Data collected may assist the BOT with resource management decisions and practices and contribute to an inventory that can be shared with other local governmental agencies.

Included in this data release are bathymetric, water quality, and observational findings gathered in 2025 for the following water bodies listed in alphabetical order: Beck Pond, Bluff Spring Fen Central Pond, Bluff Spring Fen North Pond, Bluff Spring Fen South Pond, Bulrush Pond, Busse Lake Main Pool, Busse Lake North Pool, Busse Lake South Pool, Busse Woods Reservoir, Deer Creek Quarry, Deer Grove Lake, Hambone Lake, Highland Woods Golf Course Hole 6 Pond, Highland Woods Golf Course Hole 13 Pond, Lake Carriage Way, Lake Katherine, Lake Leaky, Lake Regina, Leon Lake, McGinnis Pond, Midlothian Creek Detention Reservoir, Mud Lake, Potawatomi Pond, Salt Creek, Sand Ridge Pond, Skokie Lagoon 4, Skokie River, Spring Creek Lake, Spring Lake, Sulky Pond, Turtlehead Pond, Unknown A22360006, West Pond, and Wetfoot Lake.