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Figure 2-9. Photo of Sediment Influences by the Backwater of Terrace Reservoir <br />~~ <br />~~` _~_ <br />~~ _ - <br />~ - - <br />_ ~~ <br />r~ <br />~- _ -_ <br />~~, <br />- `y <br />~- <br />2.2.5 Terrace Reservoir (Reach 5) <br />--~. <br />~~~ <br />Terrace Reservoir is an irrigation storage reservoir built in 1912 with a maximum capacity of about <br />15,200 acre-feet (Reinhardt, 2004). Terrace Reservoir serves as a sediment catch, reducing the amount <br />of sediment being carried by the river to the downstream alluvial fan area. Figure 2-10 shows a bar <br />forming in Terrace Reservoir as sediment drops out. <br />Figure 2-10. Photo of Sediment Deposition in Terrace Reservoir <br />_ _- <br />r _.. <br />.~ . -_ <br />a -~ ,~ ~~_ <br />~a <br />~~~~ E q~. <br />_- <br />,~ _ <br />~, pp <br />a <br />. e <br />_ _ <br />~~ ~- <br />~~ <br />~. <br />~, <br />,~ 5~ <br />'3 i <br />u 'N ~ ~yl~ '~ <br />~~ ~. <br />~.~~ ~ <br />~ ` ~ ~ ~~ <br />`~ <br />~ ~ ", <br />_'r m• ~ <br />S ~ r <br />1 i ~r~o ~ oaf"~-i o e~T"~Y~, <br />Alamosa River Watershed Restoration Master Plan and Environmental Assessment Page 2-14 <br />