. The environment of Camp Grant. es there is a low terrace, intermediate between the high terraceand the flood plain, but much nearer the level of the latter than of theformer. In some places the low terrace is so low as to be flooded in extremehigh water, thus constituting an upper flood plain, or second bottoms/Much of this second flood plain below Camp and along the Kishwaukeesouth of Camp was flooded in March, 1918, when the water was abnormallyhigh. PECATONICA RIVER VALLEY The second largest valley in the region is that of the Pecatonica River(Rockford map), and in some ways this valley i
. The environment of Camp Grant. es there is a low terrace, intermediate between the high terraceand the flood plain, but much nearer the level of the latter than of theformer. In some places the low terrace is so low as to be flooded in extremehigh water, thus constituting an upper flood plain, or second bottoms/Much of this second flood plain below Camp and along the Kishwaukeesouth of Camp was flooded in March, 1918, when the water was abnormallyhigh. PECATONICA RIVER VALLEY The second largest valley in the region is that of the Pecatonica River(Rockford map), and in some ways this valley is more remarkable thanthat of the Rock. It is not deeper, but it has an exceptionally wide (2 to 3miles), low flat, or flood-plain (Plate II). The flat is, indeed, so low thatit is drained but poorly, and during a large part of the year, is so wetas to make travel over it difficult or even impossible, except on roads whichhave been graded several feet above its level. The fineness of the surface Illinois State Geologica Plate PHYSICAL FEATURES 13 o o Q8 •HX s S 3 «M £ tj ° t © 2 « d 5 ?3 i a a a^? m cd cc ?2*3 S-c o CD CtJ d 0) CD rj CD £> Bs cd co 02 0) o> > d n PI CD £ 5 o o »d HH o o 3 o d o .2 £ O +j coas 02 CD 2 S 2 5 o CD 0!> O co bo
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Keywords: ., bookcentury1900, bookdecade1910, bookidenviro, booksubjectgeology
