Figure 5. All historical water well records used to construct the 3-D geologic model

From

Stratigraphy and Extent of the Pearl-Ashmore Aquifer, Mchenry County, IL, USA

Carlock Drew C., Thomason Jason F., Malone David H., Peterson Eric W.

World Journal of Environmental Engineering. 2016, 4(1), 6-18 doi:10.12691/wjee-4-1-2