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Final Environmental Assessment for the Tamarack Managed Groundwater Recharge Project
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Final Environmental Assessment for the Tamarack Managed Groundwater Recharge Project
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Last modified
3/8/2013 3:46:54 PM
Creation date
1/24/2013 11:12:40 AM
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Template:
Water Supply Protection
Description
relates to the Platte River Endangered Species Partnership (aka Platte River Recovery Implementation Program or PRRIP)
State
CO
Basin
South Platte
Water Division
1
Date
8/3/1999
Author
Colorado Division of Wildlife
Title
Final Environmental Assessment (EA) fo rteh Tamarack Managed Groundwater Recharge Project at Tamarack Ranch State Wildlife Area and Pony Express State Area
Water Supply Pro - Doc Type
Project Overview
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groundwater recharge projects to provide dependable water supplies <br />many fish and wildlife species including federally listed threatened 1 nv Ive endangered the species <br />along the Platte River Basin in Colorado and Nebraska. P tes that will benefit <br />construction of up to 35 wells approximately This proposal <br />pproximately 13 miles of pipeline and up to 41 small ponds <br />located in natural depressions (see Figures 2 and 3). The wel <br />30,000 acre -feet of water into the ponds annually. is will um <br />to the South Platte River during times of shortage to Y A portion <br />provide Pump average of <br />on of this water will return back <br />species in Colorado, and incidentally providing flows for T &E species in central Nebraska, <br />fish <br />as agreed to by the State of Colorado in Tab 3A of the Cooperative <br />The depositing.of an average of 30,000 acre -feet of `agreement. <br />upland sites on the TRSWA and PESWA will create a significant water annually in the 41 designated <br />habitats. Alluvial flows back to the river are also i • ficant amount of new wetland <br />similar wetland type habitats below the Pumping Projected sected to create or enhance <br />g <br />A small artificial stream approximately one -third of a mile 1 <br />along with a series of small ponds that will be used as an emergency <br />artificial stream and for all Ponds t long will also be constructed <br />rgency water supply for the <br />maintaining proper water temperatures for the native fish. <br />2) NO ACTION ALTERNATIVE <br />If the project is not constructed, none of the above describe <br />Further, none of the benefits to Colorado ME species Fe derally listed <br />other wildlife benefits will be realized. d features will be built. <br />ME species, or <br />The State of Colorado will be limited in its ability to fulfill of the Cooperative Agreement. fill i <br />is commitments under Tab 3A <br />IV_ AFFECTED ENVIRONMENT <br />SOILS <br />The proposed pond sites and majority of pipelines on the T <br />excessively drained soils on upland majority Of Pipelines <br />These sand deposits SW <br />south and have slopes that are gent) roll' RSWA will be located r deep, <br />is ve ra id. Y rolling to strongly rolling. Permeability river to the P Effective rooting depth is 60 inches or more. The available low- Surface runoff is slow, the soil blowing hazard is high, tY of these soils <br />Valent loam water capacity is <br />y sands and Dailey loamy sands are the prominent o l erosion hazard is slight. <br />Proposed wells are mostly deep, <br />p somewhat poorly drained soils on low pter aces and bottom <br />lands. Permeability is slow. Effective rooting depth is 60 inc <br />capacity is moderate. Surface runoff is slow, and erosion hazard ' m <br />water table occurs between 12 and 24 inc hes or more. Available water <br />saline condition is common. Soil inches during winter and spring slight. A fluctuating <br />Aida com lex types here include, Westplain silty clay loam sWs moderate <br />P , Manter Loamy sand, and Fluvaquentic Ilaplaquoi <br />n <br />
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