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Last modified
1/26/2010 2:16:19 PM
Creation date
10/12/2006 12:46:05 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8460.500
Description
Platte River Recovery Plan
Basin
South Platte
Date
8/3/1999
Author
Colo Div of Wildlife
Title
Final Environmental Assessment for the Tamarack Managed Groundwater Recharge Project at Tamarack Ranch State Wildlife Area and Pony Express State Wildlife Area
Water Supply Pro - Doc Type
Publication
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<br />After the water is pumped from these wells into the recharge ponds further from the river <br />in the upland areas, seepage from these ponds into the groundwater aquifer will increase <br />groundwater elevations. These elevated groundwater levels will extend all the way back to <br />the river causing increased return flows into the ,river channel. The riparian meadow areas <br />between the river and the upland areas where th~ recharge ponds exist will experience <br />elevated water tables with the resulting establish/Dent of wetland characteristics. The <br />enhanced wetland functionality resulting from these higher water tables under the riparian <br />meadows will be utilized in creating wetland complexes. Wetlands in the riparian meadows <br />will provide nesting and brood habitat for numerous waterfowl. <br /> <br />i <br />!", <br /> <br />As the hydrologic analysis in Appendix A shows"these wells will pump mainly to the <br />recharge ponds during the late fall, winter, and early spring periods. Wetlands are created <br />around these recharge ponds and the warm groundwater supplied by the wells provides <br />open water surface at the recharge ponds which ~reates a suitable environment and resting <br />areas for waterfowl during migration and wintering. The increased return flows of warm <br />groundwater enlarges and enhances the warm water slough areas along tbe river on these <br />state wildlife areas providing more waterfowl habitat. The increased return flows to the <br />slough areas along the river channels also maintains and promotes these habitats as an <br />essential and natural part for the preservation of, minnow species of concern. <br /> <br />c <br /> <br />VEGETATION <br /> <br />Construction activities that would cause disturbance to vegetation include instalhition of <br />wells and excavlltion of pipeline trenches. Potential impacts may also occur as the result of <br />soil compaction and/or the crushing of individual plants by machinery. Since the vegetation <br />to be impacted is not unique to the area, but similar to surrounding plant communities, <br />these impacts would not be considered significant. Re-contouring the disturbed sites with <br />the surrounding topography and seeding with apvropriate native grasses will help . <br />minimize impacts. Disturbed areas will provide t~e opportunity for tall annual plants like <br />wild sunflowers to grow until grasses are established. These plants would be considered <br />desirable for some wildlife species like bobwbite quail and pheasants. At the new pond <br />sites, plant species composition will change as the area becomes more mesic. Wetland type <br />plants will replace upland species. Exact changes in plant composition will be dependent on <br />the amount and timing of water deposited at each site. Changes to the soil over time will <br />also affect plant species. This conversion from grllssland to wetland is considered to be a <br />benefit to wildlife and a positive aspect of the project. <br /> <br />FISH AND WILDLIFE <br /> <br />Potential negative impacts to wildlife during the construction ofthe project consist of <br />temporary disturbances and include increased noise and activity levels. There will be a <br />temporary displacement of wildlife from the vicinity of the construction sites. These <br />impacts will not be significant or have any effects ~m the viability of any local wildlife <br />population. <br /> <br />13 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />
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