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3.0 HISTORIC WATER USE <br />- Complete diversion records for the Boxelder Ditch from 1950 through 2001 were available <br />from the State Engineers Office. The diversion records were used to calculate the pro-rata deliveries <br />to the Timnath Pit property. John Weitzel farmed the property from 1963 to 1989 as both the owner <br />and, later, as a tenant. Mr. Weitzel was able to provide information on irrigated acreages and, as <br />former President o~f the Boxelder, insight into the operation of the ditch. A study period of 1960 to <br />1989 was chosen to coincide with John Weitzel's cultivation of the farm. The period is logical <br />because of the availability and reliability of information on farming practices and the proximity to <br />when farming stopped and present activities began. The study period includes 30 years of <br />precipitation data including several wet and dry years. <br />31 Diversion Records <br />Diversion :records at the 8-foot Parshall Flume for the Boxelder Ditch. at the river diversion <br />were available from the SEO for the period from 1950 through 2001. The average annual diversion <br />for the 1960 through 1989 period is 7,1.51.3 AF. No individual delivery records are available for the , <br />Timnath Pit property for the study period. Farm deliveries were calculated as the pro-rata amount <br />due to 3 %2 out of 64 shares of the Boxelder minus estimated transportation loss. The transportation <br />loss, estimated through experience and engineering judgment, was 10% of the diversion. The <br />average annual delivery to the property for-the 1960 through 1989 period was 352.0 AF. <br />3.2 Irrigated .Acreage <br />The historic irrigated acreage on the Timnath Pitproperty was determined through interviews <br />with John Weitzel and from aerial photographs produced by the Farm Services Agency, Natural <br />Resources Conservation Service. Mr. Weitzel was able to delineate on the aerial photographs which <br />parcels on the property were used to cultivate various crops and which parcels were not irrigated. <br />The photographs ~~vere analyzed based on this guidance, and the areas of the various parcels were <br />determined. The. farm and parcel areas are shown in Figure 3.1. Table 3.1 lists the parcel <br />designations and irrigated acreages. <br />C:\Projects\CODKCOI\Adrnin\DKC 2006 SWSP Application.doc 4 Scott Water Engineers <br />