The deep valley extending from the Danbury Fair Grounds to the East
Branch Reservoir in the Croton River system, has given rise to the
suggestion that the course of the Housatonic formerly may have been
along the line of Still and Croton rivers and thence to the
Hudson.[11] From the evidence of the topographic map alone, this
hypothesis appears improbable. The trend of the larger streams in
western Connecticut is to the south and southeast; a southwesterly
course, therefore, would be out of harmony with the prevailing
direction of drainage. Also, the distance from the present mouth of
Still River to tidewater by the Still-Croton route is longer than
the present route by way of the Housatonic.
[Footnote 11: Hobbs, W. H., Still rivers of western Connecticut: Bull.
Geol. Soc. Am., vol. 13, p. 25, 1901.]