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5 <br /> in the ASCE paper(in Appendix I) show no gaps. The reported information is <br /> "hyped" up looking for additional excuses as to why the W-weir should be <br /> removed. <br /> d. Boat passage. The velocity data measured in the W-weir in downtown Pagosa <br /> is shown in Figure 18 (from the B. Rosgen, 1998 paper). This data shows the <br /> vertical velocity profile with low velocity near the bed and gradually increasing <br /> toward the middle of the water column and the highest near the surface. This <br /> velocity maintains the shooting flow of the run for boating. The Isovels(lines of <br /> equal velocity are plotted in Figure 20, B. Rosgen, 1998)also verify that the <br /> hydraulics of the structure are safe for boating due to the higher velocity <br /> concentrated in the deep water sections through the thalwegs. The velocity <br /> vectors are shown in the photo(Figure C),where they are gently directing the <br /> surface currents to the deep water. This helps boats navigate through the <br /> structure,yet if anyone is turned over in his or her boat,the velocity then"shoots" <br /> into the flat, deep pool immediately below the chutes. There are no dangerous <br /> recirculation eddies as claimed by the Lacy report. There are,however, very <br /> strong recirculation currents with the U-drop that I personally witnessed near high <br /> water. The photograph in Figure C shows standing waves in the center of the W- <br /> Weir,which many kayakers like to"surf'and do"endo's"with play boats. I <br /> have not only personally boated these structures but have watched many rafts,and <br /> kayakers play in the W-weir structure without incident. The recreational boating <br /> has occurred over an extreme range of flows for the last ten years, and except <br /> during the major drought and record low flow did anyone have trouble with boat <br /> passage. <br /> e. Aesthetics. The reason the W-weir was designed for larger rivers was to <br /> eliminate the unnatural look of a straight or even uniformed curved line of rocks <br /> across a river. I got the idea by looking at bedrock controlled rivers in the Eastern <br /> United States. The W-weir is designed to have the appearance of bedrock sill <br /> outcrops that have different slopes and angles as the stream traverses through the <br /> feature. If the concreted U-drop and the boulder rip rap that accompanies the <br /> structure is an improvement in aesthetics, then I am very confused on the criteria <br /> used. The majority of the public does not favor boulder rip rap, nor concreted U- <br /> shaped check darns, as they do not appear natural. Any structure at record low <br /> flow looks a little "honey." The lacey report showed a contrast in aesthetics by <br /> showing a W-weir at record low flows compared to the U-drop at 1/3 bankfull <br /> stage—A very biased comparison. <br /> 4. Hydraulic jumps <br /> The statement that"W structures protrude above the streambed into the flow, ...causing <br /> an accelerated flow to drop vertically into the downstream channel creating a hydraulic <br /> jump". Nothing could be further from the truth. The invert of the structure is at the bed <br /> of the river, and the flows are directed to the thalweg without a hydraulic jump. By the <br /> time the flows reach the higher part of the structure, they have been directed over the <br />