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Water Supply Reserve Account -Grant Application Form <br />Form Revised May 2007 <br />6. Water Availability and Sustainability -this information is needed to assess the viability and effectiveness of <br />the water project or activity. Please provide a description of each water supply source to be utilized for, or the <br />water body to be affected by, the water activity. For water supply sources being utilized, describe its location, <br />yield, extent of development, and water right status. For water bodies being affected, describe its location, <br />extent of development, and the expected effect of the water activity on the water body, in either case, the <br />analysis should take into consideration a reasonable range of hydrologic variation. <br />The Town of Walden Water Supply Improvement Project will utilize the Town's senior Hi Ho Ditch <br />water right for 1.0 cfs to divert water from the Michigan River through a combination of structures <br />including the rehabilitated gravity flow surface diversion, a new collection gallery that would use a pump <br />to deliver water to the raw water system, and two existing wells that will be decreed as alternate points of <br />diversion to the Hi Ho Ditch if needed to provide warmer water in the winter months. The Hi Ho Ditch is <br />a very senior right on the Michigan River and has a 4/1/1885 priority and has been changed to municipal <br />use at the surface diversion structure in Case No. W-41. The combination of diversions under the four <br />structures will be limited to 1.0 cfs when a call is placed by senior downstream water rights during the <br />summer and fall. This is sufficient water to meet the Town's current and projected maximum potable <br />daily demands to 2025 during even a drought condition such as 2002. In addition, the Walden Reservoir <br />shares owned by the Town of Walden will be changed to municipal use and decreed for augmentation of <br />all of the Town's diversions structures and wells to further enhance yield for all municipal uses, including <br />nonpotable irrigation. <br />8 <br />