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Arkansas - Upper Ark WCD Hydrologic Water Balance Study_Application
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Arkansas - Upper Ark WCD Hydrologic Water Balance Study_Application
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Last modified
4/11/2013 3:41:58 PM
Creation date
9/10/2009 12:22:14 PM
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WSRA Grant and Loan Information
Basin Roundtable
Arkansas
Applicant
Upper Arkansas Water Conservancy District
Description
Hydrologic Water Balance Study
Account Source
Statewide
Board Meeting Date
9/15/2009
Contract/PO #
150460
WSRA - Doc Type
Grant Application
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j. The water activity meets water management objectives identified in the Statewide Water Supply <br />Initiative, helps implement projects and processes identified as helping meet Colorado's future water <br />needs, and/or addresses the gap areas between available water supply and future need as identified in the <br />Statewide Water Supply Initiative or a roundtable's basin-wide water needs assessment done in <br />accordance with the Colorado Water for the 21st Century Act. <br />Data generated by UAWCD's hydrologic water balance study will help meet all nine water management <br />objectives identified in the Statewide Water Supply Initiative. Water resource managers, land use planners, <br />water scientists, and climate experts will benefit by the robust scientific findings USGS will produce. <br />TABLE 13: SWSI WATER MANAGEMENT OBJECTIVES <br />Ob'ective How Addressed <br /> Data generated such as water-level change maps can be used to meet the projected M&I <br /> shortfall by 2030 of 31,500 a.f. in part by evaluating aquifer response to increased municipal <br /> ground water withdrawals or proposed industrial ground water withdrawals; data can be used to <br />Sustainably meet analyze "what if' scenarios so managers can create adaptive strategies to deal with population <br />municipal and industrial growth, increased augmentation demand, and potential climate change; since pumping by wells <br />demands decrease ground water storage, data generated will document decline in heads in response to <br /> pumping to help determine whether existing wells may become dry or whether pumping and <br /> drillin costs for new wells may increase. <br /> Data generated can be used in vulnerability assessments regarding climate change, and for <br /> drought and flood planning; data can help sustain productive agricultural use of land while <br />Sustainably meet optimizing water availability for municipal uses; for instance, while most irrigation is surface <br />agricultural demands water, some is Rule 14 well pumping so this data could help agricultural planning related to <br /> human and natural changes that might cause either increases or decreases in surface water <br /> runoff or increases or decreases in round water levels. <br /> The study will evaluate grountl water recharge rate by focusing on (1) infiltration of surface water <br /> from streams that flow from high mountains into the basin (aka mountain front stream seepage), <br /> (2) subsurface flow into the basin along the mountain front (aka mountain front subsurface <br />Optimize existing and inflow), and (3) infiltration of surface water diverted for irrigation along canals; since future <br />future water supplies optimum use of ground water and surface water supplies coultl include use of aquifer storage <br /> and recovery similar to reservoir storage and recovery as an innovative way to meet multiple <br /> consumptive and nonconsumptive demands, data generated will form a basis for future studies <br /> re ardin utilizin a uifers for water stora e. <br /> The study will produce first-ever data on three key tributaries to the west of the Arkansas River <br /> (Cottonwood, Chalk, and Poncha Creeks) and on the only key tributary to the east of the <br />Enhance recreational Arkansas (Trout Creek) that can help analyze timing and onset of spring runoff and its effect on <br />opportunities white water rafting; since -800,000 visit the AHRA every year, this new data can be used for <br /> inte rated water resource mana ement and lannin to enhance recreational o ortunities. <br /> The study will generate data that can be used to measure inflow stream and lake levels; because <br /> environmental riparian zones are particulariy sensitive to changes in availability of surface water <br />Provide for and ground water, because either can affect vegetation, nutrient cycling, flood mitigation, erosion <br />environmental stabilization, the endangered boreal toad, and fish and bird species; changes in ground water <br />enhancements related to ground water development can affect sensitive riparian zones and create additional <br /> land and water mana ement issues. <br /> The study is cost effective. It builds on WSRA's investment in the DistricYs -$815,000 structural <br /> water project involving 15 dcps in the upper Arkansas; it includes a 33% cost share from USGS <br /> and a 23% cost share from local land use planners (like Chaffee, Fremont and Custer Counties) <br />Promote cost and local water resource managers (like Penrose and Round Mountain Water Districts); the study <br />effectiveness design relies solely on existing wells with pre-existing access agreements still in place from the <br /> 2000-2003 stutly; the study will add value to the Arkansas Basin DSS FS; the study complements <br /> the CSU contribution to the Arkansas DSS. <br />Upper Arkansas Water Conservancy District (UAWCD) Page 18 of 42
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