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1 <br />w <br />I Fi ure <br />LIST OF FIGURES (Continued) <br />Page <br />9. Nonnative fish control techniques used from 1996 to 2002 in riverside <br />ponds that are located along the Colorado River downstream of the <br />Gunnison River confluence and upstream of the Colorado/Utah state <br />line. Off-site screen refers to screens that control the movement of fish <br />into or out of pond(s) from a distant upstream or downstream location.... 29 <br />10. Nonnative fish control techniques used from 1996 to 2002 in riverside <br />ponds that are located along the Gunnison River downstream of Austin, <br />CO and upstream of the Gunnison River confluence with the Colorado <br />River. Off-site screen refers to screens that control the movement of fish <br />into or out of pond(s) from a distant upstream or downstream <br />location ............................................... ..................................... 30 <br />11. An outlet screen constructed of window screen covering an expanded <br />aluminum grate was supported on an aluminum frame and mounted at a <br />slight tilt off horizontal .................................................................... 35 <br />12. A box screen constructed of window screen covering an expanded <br />aluminum grate was supported on an aluminum frame and placed below <br />r a pond outlet .............................................................................. 35 <br /> 13. Frequent fouling of a surface release outlet screen resulted in its <br />removal from the outlet structure ..................................................... <br />36 <br /> 14. Gravel filter screen used on the outlet structure of a pond with a <br />jurisdictional dam required an unobstructed outlet in the event the <br /> screen failure .............................................................................. 36 <br /> 15. Self-cleaning, rotating, flat-plate screen was used on the outlet of a small <br /> farm pond .................................................................................. 37 <br /> 16. Large shearing wedgewire screen used on the inlet structure to <br /> Horsethief Canyon State Wildlife Area's fields, waterfowl ponds, and <br /> wetland ...................................................................................... 37 <br /> 17. Small shearing wedgewire screen used on the inlet water to Horsethief <br /> Canyon State Wildlife Area's threatened and endangered fish grow-out <br /> <br />ponds ...................................................................... . 38 <br />1 18. Close-up view of a wedgewire screen with a 0.5mm aperture ............... 39 <br /> <br />1 vi