Laserfiche WebLink
Inventory and Field Reconnaissance I <br />In addition to field notes, photographs were taken during both the aerial reconnaissance and the <br />site visits. <br />Notes from observations made during both field reconnaissance efforts were <br />subsequently recorded onto standard forms to permit more convenient description, comparison <br />and evaluation of information pertaining to diversion structures. Sketches of several structures <br />which received extended site visits accompany the narratives. These forms are contained in <br />Appendix F. Photographs of selected structures (chosen to display the nature and range of <br />"typical" structures) are contained in Appendix E. <br />It should be noted that these descriptions and evaluations of diversion structures are <br />premised on the assumption that the observations made (and confirmed in interviews with <br />owner/operators) are representative of the past and future nature of those structures; in other <br />words, that observers visiting the structures at a similar time in any other year would see <br />similar features. It should also be noted that no attempt was made to describe or evaluate any <br />other aspects of the delivery systems (e.g., headgates, measuring devices, etc.) associated with t <br />the structures examined. <br />DETAILED SITE SURVEYS <br />As the August 1994 site visits were being carried out, it became apparent that the <br />extremely low flow conditions of late summer 1994 presented a unique opportunity to obtain <br />detailed site surveys of diversion structures. Because of the low water, such surveys could, <br />describe the topography of the structures and the adjacent riverbed with sufficient accuracy to <br />support preliminary design work (though no such design work was anticipated for the present <br />study). <br />After some discussion, it was determined that study resources would support detailed site <br />surveys of the Maybell and K. Diamond/Patrick Sweeney diversion structures. These two <br />structures are permanent obstructions lying within designated critical habitat. A local surveyor <br />was contracted to carry out these surveys in early October. The resulting site survey maps are <br />contained in Appendix G. <br />11 <br /> <br />u <br /> <br /> <br /> <br />2-6