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IV-15 I I I I I I I I I I I I I I I I I I I than directly to the Townireservoir is that in-pond filtration reduces water turbidity. caoacitv and Ooeration. Town personnel estimate current capacity of the infiltration pipeline (when supplied by ditch water) ~s 110,000 to 120,000 gpd. Greater flows may be obta~ned, but at a reduction of water quality. This woulq indicate that gravels around the perforated pip~line are not clogged (or else flow would be restricted), but that silting is occurring which is "washed out" with high flow rates. No records are available of capacity of the infiltration line without diversion of ditch water to the infiltration ponds; Obviously, the ditch water represents a differ~nt water right. The infiltration line a1sq responds fairly quickly to irrigation of hay fielqs upstream from the infiltration line. In times past, direct flow water released from Gurley Reservoir (which the Town was incapable of using or storing), has been used to water the hay fields to recharge groundwater conditions around the pipeline. In effect, direct flow has been "stored" inithe ground and collected as required by the Town. IUse of direct flow for this application would not be normal, however, because during direct flow periods farmers also have their own water to use, a~d fields are likely being watered already. Maintenance. Roots were cleaned out of infiltration lines in 1989, and silt was cleaned out of some of the ponds 3 years ago. O~her ponds were cleaned 6 years ago. 4. Water Available from SubsUrface Riahts. A summary of water flows which have been variously estimated by observers are as follows: Gardner Sorina Summer - 45,000-55,QOO gpd (.075 to .078 cfs) winter - 20,000-25,000 gpd (.031 to .039 cfs) i Infiltration Pond System Summer - 110,000 gpd maximum (.170 cfs) (with ditch diversions winter - No information It is probable that a substantial portion of the water from the subsurface:flows is recharged by flow in Gurley Ditch. However; the winter flows should not be affected by irriga~ion after January 1.