Laserfiche WebLink
<br />~ <br /> <br />Mr~ Edd1e Kochman <br /> <br />2 <br /> <br />September 14, 1993, states the 1993 high flows were within 10-12 inches of <br />communicating with the pond. The floodplain maps should help to resolve this <br />question. <br /> <br />If this pond is located within the 40-year floodplain, the Service recommends <br />that no stocking of warm-water fish take place. The pond could be used as a <br />put-and-take salmonid fishery or it could be closed to fishing as proposed in <br />the Connected Lake EndanQered Soecies Fish Pond ManaQement Plan. If the pond <br />is not closed to fishing, the potential for angling mortality of Colorado <br />squawfish in the pond should be evaluated. Another option would be to explore <br />reconnecting this site to the river as a seasonally-flooded backwater for use <br />by the endangered fish. <br /> <br />Connected lakes-large <br /> <br />The Service would not be opposed to implementing the LMP for this pond. This <br />pond seems fairly well protected from river floodflows and the Service agrees <br />that, in all likelihood, it is out of the 40-year floodplain. Water exiting <br />the outlet structure is screened by gravel, cobble, and geotextile filter <br />cloth, greatly reducing or preventing escapement of larval and juvenile <br />fishes. The outlet structure only discharges during spring runoff or major <br />storm events. <br /> <br />Corn lake <br /> <br />Service concerns with the LMP for Corn lake are its position in the <br />floodplain, the un screened outflow channel, and the potential for Aeromonas <br />salmonicida nova to be present in the goldfish in the lake. The floodplain <br />.elevation question will be resolved by reviewing the floodplain maps being <br />developed by the Colorado Water Conservation Board. Corn Lake discharges to <br />the river through an open channel with no impediments to fish escapement. <br />Gambusia ~ were observed in the outflow channel immediately below the pond. <br />The outflow channel should be modified to prevent escapement of juvenile and <br />larval fishes to the river. The %"-mesh, flat-plate screen proposed in the <br />Corn Lake LMP will not achieve that goal because the openings are too large <br />and because screen clogging would result in flows overtopping the screen. <br />Potential screening approaches were discussed during the site visit by <br />~ivision and Service biologists. Screening the outflow will minimize <br />escapement of stocked fish and other fish species into the river. With the <br />addition of adequate screening to the outflow and verification of the <br />floodplain elevation of Corn Lake, Service concerns with this LMP will have <br />been addressed. <br /> <br />Elkhe~d Reservoir <br /> <br />Elkhead Reservoir has a very high escapement potential due to annual <br />uncontrolled spilling directly into Elkhead Creek, a tributary of the <br />Yampa River. The Service's concern with stocking of largemouth bass in <br />Elkhead Reservoir is the possibllity of movement of bass into the Green River. <br />We agree that Yampa River habitat is less than ideal habitat for largemouth <br />bass. However, transit of largemouth bass downstream to the Green River is <br />highly likely as evidenced by the fact that northern pike from <br />