A New Guide for Emigrants to the West

by John Mason Peck

When entirely filtrated, it is the most limpid and agreeable river water I ever saw. Its specific gravity then, is about equal to rain water; but in its turbid state, it is much heavier than ordinary river water, for a boat will draw three or four inches less in it than in other rivers, with the same lading, and the human body will swim in it with but very little effort.

It possesses some medicinal properties. Placed in an open vessel and exposed to the summer's sun, it remains pure for weeks. Eruptions on the skin and ulcerous sores are cured by wading or frequent bathings, and commonly it produces slight cathartic effects upon strangers upon its first use.

The width of the Missouri river at St. Charles, is 550 yards. Its alluvial banks however are insecure, and are not unfrequently washed away for many yards at its annual floods. The bed of its channel is also precarious, and is elevated or depressed by the deposition or removal of its sandy foundation. Hence the elevation or depression of the surface of this river, affords no criterion of its depth, or of the volume of water it discharges at any one period.

Undulatory motions, like the boiling of a pot, are frequently seen on its surface, caused by the shifting of the sand that forms its bed.

The volume of water it ordinarily discharges into the Mississippi is vastly disproportionate to its length, or the number and size of its tributaries. I have seen less than six feet depth of water at St. Charles at a low stage, and it was once forded by a soldier, at Bellefontaine, four miles above its junction with the Mississippi.

Evaporation takes up large quantities, but absorption throughout the porous soil of its wide bottoms consumes much more. In all the wells dug in the bottom lands of the Missouri, water is always found at the depth of the surface of the river, and invariably rises or sinks with the floods and ebbings of the stream. Volumes of sand frequently enter these wells as the river rises.

Its periodical floods deserve notice. Ordinarily this river has three periods of rising and falling each year. The first rise is caused by the breaking up of winter on the Gasconade, Osage, Kansau, Chariton, Grand, and other branches of the lower Missouri, and occurs the latter part of February, or early in March. Its second rise is usually in April, when the Platte, Yellow Stone, and other streams pour into it their spring floods. But the flood that more usually attracts attention takes place from the 10th to the 25th of June, when the melting snows on the Chippewan mountains pour their contents into the Missouri. This flood is scarcely ever less than five, nor more than 20 feet at St. Louis, above the ordinary height of the river. On two occasions, however, since the country was known to the French, it has arisen to that height in the Mississippi as to flow over the American Bottom in Illinois, and drive the inhabitants of Cahokia and Kaskaskia from their villages to the bluffs. Rain in greater or less quantities usually falls during the rise of the river, and ceases when the waters subside. So uniform is this the case in Upper Missouri, the region beyond the boundary of the State, that the seasons are divided into wet and dry.

Pumice stones and other volcanic productions occasionally float down its waters.

Mississippi River. The extreme head of the longest branch of the Mississippi river, has been found in lake Itaska, or Lac la Biche, by Mr. Schoolcraft, who states it to be elevated 1500 feet above the Atlantic ocean, and distant 3,160 miles from the extreme outlet of the river at the gulf of Mexico. The outlet of Itaska lake, which is connected with a string of small lakes, is ten or twelve feet broad, and twelve or fifteen inches deep. This is in latitude about 48° north. From this it passes Cedar and several smaller lakes, and runs a winding course, 700 miles, to the falls of St. Anthony, where its waters are precipitated over a cataract of 16 or 17 feet perpendicular. It then continues a southeastern course to the Missouri, in N. lat, 38° 38', receiving the St. Croix, Chippewa, Wisconsin, Rock and Illinois rivers, with many smaller streams from the east, and the St. Peter's, Iowa, Des Moines, and Salt rivers, besides a number of smaller ones from the west. The current of the Missouri strikes that of the Mississippi at right angles, and throws it upon the eastern shore. When at a low stage, the waters of the two rivers are distinct till they pass St. Louis.

The principal branch of the Upper Mississippi, is the St. Peter's, which rises in the great prairies in the northwest, and enters the parent stream ten miles below the falls of St. Anthony. Towards the sources of this river the quarries exist from which are made the red stone pipes of the Indians. This is sacred ground. Hostile tribes meet here, and part unmolested.