Composite map of the river network, associated watershed boundary, geology, and Modflow model head output.  The digital elevation model used in the construction of the solid model / ground water model is shown as a shaded relief map beyond the watershed boundary enclosing the clipped geologic map.  The green polygon in the North central portion of the watershed is the WE-38 watershed of the USDA and USGS research sites on the northern limb of the Mahantango anticline.  Model domain is 209 rows by 392 columns by 4 layers with a 90 meter grid spacing, and employs 3985 river cells.