Charles - You certain this stuff was located between the PRR crossing and the BR&P/B&O/R&S overpass??
Over the years I've explored virtually the entire area around Genesee Jct. Other than the turntable pit and a possible building foundation nearby (the GJ tower?), I've found no evidence of any significant structures.
Further, the WS tracks gain about 30 feet in elevation from just west of the old PRR diamond to the BR&P overpass - a distance of about 2,500 ft. This climb is via double track width earthen fill. Seems unlikely a lineside water tank, car shed etc. would have been located along this relatively steep incline.
Could perhaps instead this stuff been located between the Genesee River and the PRR crossing? The 1920 USGS map of the area (
http://docs.unh.edu/NY/rstr95sw.jpg) shows nothing beyond a small building in the north-east quadrant just east crossing. (However the USGS map doesn't show the turntable pit, nor its lead, either.)
...FB