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percent or greater. Annual and perennial forbs totaled ten, only one perennial forb had relative <br />cover greater than 1 percent <br />The third component of the Swale /drainage vegetation type, the cattail component, was not <br />sampled since it is only a small community. This component is nearly 100 percent cattail. <br />Standing water occurs in the component essentially all year long. The cattail component is <br />further described in Attachment 2.04.10 -10, formerly Peabody Addendum 11 -1 and is the <br />same as was found in 1999. <br />The extent and distribution of the swale /drainage type is wholly dependent upon the irrigation <br />associated with the surrounding agricultural areas excepting any contribution from storm flows <br />or snowmelt runoff. Undoubtedly, the ephemeral drainages could not support this vegetation <br />without the supplemental water. The contribution of supplemental water from irrigation <br />tailwater is greatest during the mid -April to October irrigation season, while ground water <br />recharged from irrigation may contribute to seeps and bogs over a greater period. <br />Each component of the Swale /drainage type exhibits very high levels of productivity and cover, <br />although the vegetation supports little utility other than wildlife habitat. The surrounding <br />pasture and hayland vegetation offers considerably better quality forage for livestock. The <br />boggy conditions of the swales and the occurrence of large volumes of coarse and rank <br />standing dead vegetation probably precludes utilization of the type as well. Local landowners <br />expressed somewhat derisive remarks about the type, indicating that it constitutes lands that <br />could be put to greater use if the saturated conditions could be controlled. Reference to <br />Section 2.04.11, Fish and Wildlife Resources Information, can be made for further information <br />on the type. <br />6.5 Sagebrush - 1 Type (SG-1) The sagebrush -1 vegetation type represents remnants of <br />native rangeland that has not been converted to the more characteristic intensive agricultural <br />land uses in the area. This type occurs on mesa tops and shoulder slopes. The potential <br />natural vegetation probably included pinon and juniper along with sagebrush and understory <br />rangeland plants. Most of the pinon juniper has been removed and the remaining sagebrush <br />has been treated by mowing or herbicide spraying on gentler slopes. Additionally, cattle, <br />particularly during winter months, have heavily impacted this type, removing much of the <br />Revised September 2010 (PR 06) 2.04.10 -70 <br />