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this stretch ot~ river Wltl have to undergo reconstruction. Priority areas for consideratton '(lre set forth in the Conceptual Design completed by Daye Rosgen in 1999. Designations of priority areas are based on "locations that pose the greatest threat to land loss <lnd downstream sedimentation (t-Arge sedirr\\.:nt :,ource.).1I These ',tre'it'S \V~n be discussed In dCLlIl In the priority arca scction. Land use lf1 the project <lrea is predommantly agricultural. Lll1d ownership of 98'1" of the watershed is printe. !\pproximate1y one hundred landowners along the m.tr run sm<lll farming oper<ltlons that combine cropland, range, and pasture. I'lood irrigation ,md center pl,-ot spnnkler sy'stems arc used te, water crops. Cmk and sheep arc pastured in me,ldo\vs in the ripanan area. SiS'1lificant portions of the river haye se,-crely eroded stream banks and show lateral mli,'Tation of the streamb,mks, which have contributed Slsmitieantly to the following: . Reduction of bedload transport Reduced \yater fllJality . . l)"""~""'n""M' lr\~'c' . ..Vj/.....') .,-,.)0' . Dewatering of adjacent property Bridge scour Force agricultural producers to relocate or reconstruct irrigation diycrsions Wi/dltfe habitat loss . . . II. Historical Perspective Historical Sib'1llficance of Changes in Ri,u \[orpholog)' In the early 1970s the Army Corps of En6'Hleers engaged in ,[ tlood control proiect, which entailed channel straightening, ch,mnel excavation, and le,.ee construction. (Figure 1 is taken downstream from the Road 8 bndge where str<ughtening in the i 970s occurred.). ,"at oniy has the morphoiogy of d,at three~mile section of ri,-er changed, but o'"Cr time the downstream morphology has been ad\-erscly affected aod the banks ha,e become unstable. Strclightening of the ri,er cut off meanders and deepened the main channel. Figure 1: Downs tream from Road 8 Bridge 2