Topography of Rock Island County
Rock Island County lies upon the western boundary of the great
agricultural prairie state of Illinois. This boundary, the majestic
Mississippi River, is bordered by bluffs that give a rugged and
diversified surface to this river county. Rock Island County is notably a
river county, for it stretches for almost sixty miles in an irregular
strip along the Father of Waters. It also has for its boundary line (for
the upper half of the county) upon the southeast another famous stream,
Rock River. The third natural boundary is Meredosia Slough or creek which
separates Rock Island from Whiteside County for some miles on the county's
northeastern portion. The county is separated into two somewhat compact
sections or portions by the Rock River which crosses the county on its way
to union with the Mississippi.
The northern section of the county has unusual topographical interest,
being almost entirely upland of an elevation of fifty to one hundred feet
above the general level of the rivers on either side. This wall of bluffs
varies greatly in outline and picturesqueness. It is of gentle declivity
at times and at others of rugged abruptness. The bluffs along the
Mississippi follow the river in general and for the most part rise from
the water's edge. A few miles above the present locations of Moline and
Rock Island the bluff line recedes from the river, and an alluvial plain
of richness and gentle slope is formed. The bluffs which form the other
side of this plateau of the upper county section are manifest in rugged
beauty- along the north bank of the Rock River near the location of Milan.
The lines of bluff and stream diverge not far east of Milan, leaving a
broad stretch of alluvial acres. The same relative location of bluff and
stream and plain is maintained after the Meredosia Hough is reached. From
this creek the bluffs turn west and reach the Mississippi near Cordova.
Men of research say that it is altogether probable that in the early days
of the great river its path lay. through the Meredosia Slough and the bed
and valley of Rock River. If so, the portion of Rock Island County under
consideration, at one time was upon the western or Iowa side of the Father
of Waters. This elevated tract of the upper county was originally well
covered with undergrowth and scattering timber. Its surface is fairly
rough but is generally continuous except where a depression called
Pleasant Valley cuts across the upland region from Hampton on the
Mississippi to Carbon Cliff on Rock River. The farms in Pleasant Valley
are considered among the best of the upper county. The elevated region has
been farmed many years and has been made to yield productively, especially
in cereals and fruits. The bottom lands are of surpassing fertility. Along
the rivers there are some sandy tracts that are unfitted for tillage, but
in the main the farmers of this portion of the county have greatly
prospered.
The southern portion of Rock Island County is a fairly symmetrical
rectangle thirty-three miles from east to west. It has for its northern
boundary the Mississippi and Rock Rivers. Its western boundary is also the
Mississippi which turns to the southward at Muscatine on the Iowa shore or
just west of Drury's landing on the Illinois side. Mercer County lies to
the south and Henry County to the east of this' portion of Rock Island
County.
This section comprises the greater part of the excellent farming lands of
the county. There are alluvial bottom lands, rolling up-land prairies and
bluff lands of less agricultural value. The prairies responded most
quickly to the efforts of the early settler and have for many years shown
the most beautiful farms in the county. The alluvial lands were some what
swampy or boggy in part and did not yield well until modern methods of
drain-age were employed. Along the south side of the Rock River bottom
bluffs appear, the range rising abruptly in places to an average height of
more than one hundred feet. At Andalusia the bluffs approach the
Mississippi River which washes their base almost, to the southern line of
the county, except in a few places where an uncultivated low bottom
intervenes, seamed with sloughs. This range of bluffs is cut up with
hollows and ravines and is covered with a moderate growth of timber,
principally oak. The rough land extending back into the highland for
several miles is the least valuable portion of the county for agriculture.
Rock River is the principal stream within the borders of the county and
furnishes a water power second only to the Mississippi. It rises in
Wisconsin about midway between the Wisconsin River and Lake Michigan. Its
course in Illinois is almost one hundred and eighty miles long. Its chief
tributary, the Pecatonica, discharges its waters below the northern
boundary of the state. The valley of the Rock River is one of the most
healthful and wealthy sections of Illinois. After forming a portion of the
boundary between Henry and Rock Island Counties it divides the latter into
its northern and southern portions and empties into the Mississippi about
three miles below the City of Rock Island. In the last few miles of the
stream there is a sharp fall in level, and as a result a series of
beautiful rapids.
Early Settlements of Rock Island County
Source: Historic Rock Island County, pub. Kramer & Company, Rock Island, Illinois, 1908