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.~ ," occupying the previous downcut channel and increasing the height of the water table (Figure 3 below from Conceptual Design). This fulfills the committee's objectives of both reducing erosion and raising the water table back to its original level. V .~D F'-\ Figure 3: Oxbow lake construction Priority Areas The largest priority area identified in the Conceptual Design encompasses 4 miles of river. These areas include a three-quarter mile portion of the river upstream of Road 8 to a half-mile downstream of Road 10 near the town of Capulin. Reaches on this portion of the river are listed as priority areas because of the extreme instability and lateral spreading. Rosgen's classification system is included in appendices A and B (from Rosgen, 1996). The classification system contains eight geological and hydrological variables that influence stream morphology. Seven stream types, A to G, categorize these. Rosgen's classification is a widely accepted system that is used by both government agencies and private consultants. Other priority areas that are highly unstable (classified as streamtypes F3 and F4) include: a) 1.7 miles in the proximity of Highway 371 and Road 15 b) 1.8 miles from Road 15 to Highway 285. Table 1 contains a brief description of each reach and a cost estimate for rock structures and earthmoving. Costs are based on the guidelines given in the introduction of Rosgen's Conceptual Design plan (p. 6). These figures do not include other reconstruction costs such as survey costs, rock hauling, re-vegetation, and grazing management education. These items are discussed in more detail in the next section. The Reconstruction Process Landowner consensus to do the reconstruction is the first task. The committee has decided that the best way to go about this is to approach landowners individually with a personalized contract. Negotiation will proceed through the landowner, project coordinator, and committee members. 4