Laserfiche WebLink
<br />I <br />I I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />ANNUAL DIVERSION FOR IRRIGA nON <br />IN BASIN OF TONGUE AND SURFACE CREEKS <br /> <br />(Estimated from Historical Data) <br /> <br />0,000 Acre-Feet) <br /> <br />Years Upper Area Lower Area Both Areas <br />Low Flow Years 10,8 34,9 45,6 <br />Normal Flow Years 20.5 51.0 71.5 <br />High Flow Years 25,7 51.9 77 ,6 <br />All Years 18,2 44,7 62,9 <br /> <br />An analysis was made of diversion records for numerous ditches during dry, normal <br />and wet years. During a dry year, due to a lack of available water, ditches with a <br />junior water right generally could not divert. Furthermore, senior water rights <br />holders with a large diversion generally could not divert their full decreed amount, <br /> <br />During normal flow years, most of the holders of diversion rights junior to a <br />District ranking of 700 could not divert any water during the entire growing season, <br />Among the holders of rights who did receive some water, holders of rights to <br />relatively large decreed amounts generally experienced greater difficulty in <br />obtaining their full decreed amount than was the case with holders of rights to <br />relatively small decreed amounts. <br /> <br />Maximum diversions occur during May and June, which is attributed to maximum <br />availability during those months. If water was abundant, the largest amounts <br />diverted would be in June and July when crop irrigation needs are greatest. <br />Likewise, irrigators would divert more water in years of low rainfall during the <br />growing season. <br /> <br />The analysis of the diversion records also shows irregular diversion allocated to <br />municipal usage during winter months. No record was found on municipal usage <br />during summer months for these selected ditches, The amounts recorded were <br /> <br />IIl-ll <br />