A complete listing of all the Indian villages, towns and settlements as listed in Handbook of Americans North of Mexico.
Dekanoagah (between the rapids. Hewitt) . A village, inhabited by Seneca, Nanticoke, Conoy, and remnants of other tribes, placed by Gov. Evans (Day, Penn., 391, 1843) in 1707 on Susquehanna r., about 9 m. from Pequehan, the Shawnee village on the E. side of the Susquehanna, just below Conestoga cr., in Lancaster co., Pa.
Dekanoagah, as described here (9miles from Pequea and “between the rapids”) could not have been south of the Conestoga Creek. 9 miles upriver from Pequea would place the camp right at Washington Boro..or more probably what is now called the Conejohela Flats. In those days, before the construction of the Safe Harbor Dam that backfilled the valley with water, The river was more a grouping of estuaries meandering their way through rock, rapids, and growth of trees (which after the dam was build became the Conejohela Flats). There was a very large encampment of Native American’s at Washington Boro. I would bet that this was Dekanoagah. It fits the description.