p. 360

380 Dane Co.

the level of the Fourth Lake, thus making a connected navigation for small steamboats through the whole distance without further expense.

At the Dunkirk Fall, there is a rapid [of more than a mile in extent] in which the descent is six feet [and eight inches] in a distance of one and one fourth miles; there being no perpendicular fall. The banks are from fifty to sixty feet high and the valley is much contracted. From this point to Rock river twelve miles, there is a constant succession of rapids; as having seven [five] feet and [three tenths] four inches descents in a distance of about one [and a half] miles. The whole descent on these rapids (twenty five in all) was ascertained by Capt. Cram to be thirty four [feet] sixty eight hundreths feet. The Catfish enters Rock river eleven and a half miles below the foot of Lake Koshkonong. The whole length of the stream from the head of the Fourth Lake is forty miles, twenty eight of which could be made navigable by the erection of one dam at Dunkirk not exceeding six feet in height.