Final Environmental Assessment for the Tamarack Managed Groundwater Recharge Project

• 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

PROPOSED PLATTE RIFER RECOVERY MWLEMENTATION PROD
APPENDIX A, WATER COMPONENT RAM
TAB .3A
COLORADO'S TAMARACK PLAN
I• PROJECT DESCRIPTION
The Tamarack Plan involves the use of participating existing and future wells d
water facilities in Colorado to reregulate flows that are in excess of gal rights o der
Physical demands for water in Colorado in a manner that is consistent with the flow -
related goals of the Platte River Recove
geographic location of the T ry neaplethmeentat'On Program. As a result of the
results from the T wrack PIan state line, groundwater recharge that
Tamarack Plan is estimated to increase flows at the Julesburg gage
during the period of April through September by an average of approximate) 10
acre -feet over the flows that would otherwise occur d y '�
Program description, all signatories have agreed that the co bored operatio stated f m e
Tamarack Plan and the other reregulatin f the
and be credited with reducing flow shortages ob 70 the Proposed Program shall score
Operation of the com onents of the Tamarack y ,000 acre -feet. Water rights for the
p amarack Plan will be obtained and exercised under
Colorado law for beneficial uses in Colorado.
Participating wells, ditches or other facilities, and associated water rights, may Operated for purposes other than those associated with the pro Y also be
not by way of limitation, augmentation '. ~ gam, for example but
native species and wildlife. Such operations are not dP � e and e�cement of
references to this Plan do not include such operations. Tamarack plan' and
The components of the Tamarack Plan will be developed
state line beginning at about the Tamarack Ranch State Wildlife Area owned above the
Colorado Division of Wildlife near Crook, Colorado. Y the
wells located adjacent to the South Platte River that diveert h groundwater facilities will include
alluvial aquifer and canals that divert water from the South Platte River. frWateetha
percolates into the groundwater alluvium from these facilities will return to the South
Platte River at a later time. Inflows to canals and recharge basins will be idth
for Program or other purposes, and inflows for Pro identified as
recharge or seepage will be computed as inflows mingusmevapord oEbeP�ed and
acre -feet will be determined by using available weather station data and the surface
m
areas of the recharge sites. Recharge basins are typically located in sandy upland areas
with high infiltration rates such that frce water surface areas are minimal, Q resin '
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