LINK TO PDF, 2.3 mb
This exhaustive 69 page report of this survey covers the
entire valley from the source of the river to the Fairmount Water Works.
A summary of the report in 12 color charts, published in the PWD 1883
annual report, can be accessed in a compressed
black and white PDF [324 kb] or as 12 separate JPG images that are
about 125 kb each: Chart
These surveys were done in conjunction with the search for a new water supply for philadelphia, by Rudolph Hering. Much of his 1886 report can be found here. Also related is a preliminary report by hering in 1884, which can be found here.
The History of Philadelphia's Watersheds and Sewers
Compiled by Adam Levine
Philadelphia Water Department