These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 50

U.S. Geological Survey2023-01-01 更新30

Lake Darling Boundary (polygon) - Edge of water at lake-surface elevation, 656.1 ft above NAVD 88.

湖泊边界测绘

水文地理

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 50

U.S. Geological Survey2023-01-01 更新10

Wolf Run Lake data - boundary and stream channel

湖泊边界测绘

钓鱼地图制图

Data were collected to generate lake fishing maps for general public use.Cowan_Lake.dbf Data Update Frequency: As Needed.

Ohio Department of Natural Resources Open Data2025-10-30 更新10