Arkansas - Upper Ark WCD Hydrologic Water Balance Study_Application

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Water Supply Reserve Account- Grant Application Form Form Revised May 2007 On January 12 and 13, 2009, UAWCD, USGS, and CSU met in the study area to conduct field reconnaissance to ensure that the proposed hydrologic water balance study was in no way redundant to the $875,000 CSU data gathering project. Together, the parties identified, among other issues: • Optimal locations for flow measurements at 8-12 additional streams and canals, which are included in CSU's $875,000 budget, • Optimal sites for -30 new alluvial wells, which are included in CSU's $875,000 budget, and • Which irrigation canals are best sited for CSUs data collection, yet also appropriate for the hydrological water balance study. TABLE 15. IMPLEMENTATION OF CWCB PROGRAMS Pro ram Re resentative Com lementa A roaches OThe CSU SOW includes drilling -30 new shallow alluvial wells from north of Buena Vista to the South Arkansas to investigate stream-aquifer interaction within alluvium along the main stem river, while the USGS study utilizes existing domestic and municipal wells to get at deeper 300 feet bgs water across the entire 20 mile valley. CSU OThe CSU SOW includes slug tests in all 30 new wells to establish hydraulic conductivity and then monitor conductivity for two years, while the USGS study emphasizes investigating three key tributaries to the west of the Arkansas River (e.g., Cottonwood, Chalk and Poncha Creeks) and the only key tributary to the east of the Arkansas (Trout Creek) to establish the flux in water temperature (aka mountain front water) as a means to identify recharge re ions usin two shallow 15 feet iezometer nests on each tributa . OThe stutly will focus the nine-month FS by identifying precise data needs, especially spatial delineation of data gaps. @The study will contribute to the central HydroBase database by generating data that can be used in four of the eight HydroBase components: water budget model, consumptive use model, ground water planning, an surface DSS FS water planning. @The study will provide data and constraints (established a baseline) for modeling that may be developed related to climate change, and. OThe study will provide data that can be used to investigate future "what if' planning scenarios surrounding ro'ected population increases, antici ated runoff increases, and temperature increases. t. The water activity helps support the State's economic vitality and competitiveness in national and international markets. The study helps support Colorado's vitality and competitiveness in the national and international tourism and recreation market. Parts of the study area overlap with the San Isabel National Forest (1.2M acres) and the Arkansas Headwaters Recreation Area (AHRA). The study area at the headwaters of the Arkansas River is heavily recreated. The area has some of the best fishing and whitewater river rafting in the nation. The Arkansas River is the most commercially rafted whitewater river in the world. At least 27% of jobs in the study area are in the tourism and recreation sector. Study data will help ensure sustainability of water for these important drivers of the local economy. Upper Arkansas Water Conservancy District (UAWCD) Employment by Economic Sector --?-- _, ChaBee County / Construction ? 1Y? All Other I . ? . . ? 44% . ---, I i Lake County FremoN County Cusier Counly ?--? ? , 284.0 23.?6 \? 36 ? ??4 ?. I 'i"? x?IH:u?af.on'; n^.?:!,eJof<.eclo:>de":eJO:PxUS.Ru?tauoli::¢Cer:?ses. (1) Rxl_?I TaJe. eiiU (2) AiN, E4?r1%i Ps-i ui. Accunrola'?ai? a iJ foA St-+s_ .ti()f IR('F' I),i:i i,,il n, ,'":": iFi. y .:r,. f('-nly Fv.l tiNci., f'.n.n.t?fIW Lhnv??r,i? 1 1Wl;la Hi}lilig tii,. U.S. Nurca?i nf ihr C'.n,ii.. Page 24 of 42