Laserfiche WebLink
<br />..1 <br /> <br />'. <br /> <br />o <br />N <br />"I <br />00 <br /> <br />I. <br /> <br />". . the. <br />t <br /> <br />i <br /> <br />9 <br /> <br />The evaluation included modelling of rates and quantities for <br />sediment and salt yield in the Present condition, Future without <br />Project condition and Future With project condition. . The report. <br />.. may be used as a'management tool for detailed planning, for <br />documenting and quantifying anticipated impacts of proposed <br />. improved land treatment, and for comparing salinity .cost <br />effectivertess of proposed improved land treatment between <br />.watersheds on a.basin wide scale. <br /> <br />~.. .. <br />'. . <br /> <br />I <br />The Present condition is an inventory of the current status of the <br />various ,resource conditions within the watershed area. It includes <br />documentation of current erosion rates, sedimentation rates,. . <br />vegetatioq conditions, hydrologic conditions,. management practices <br />and otherpertinent.data. This inventory forms a baseline data set <br />for future resource planning and monitoring efforts. <br /> <br />The..Future without Project condition (FWOP) is a model of <br />conditions and rates for a future of 15 to 25 years with the <br />Present cdndition trends and management in effect. This model <br />represents a projection of the Present condition into the future <br />for purposes of assessing the long range impacts of current land <br />management practices and current rates of geomorphic processes. <br />This modelled condition forms a basis for assessing the need for <br />coordinated resource planning and for comparing it with a Future <br />with Project condition. '. <br />.i ) <br /> <br />The Future with Project condition (FWP) is a model of conditions <br />and rates for a future of 15 to 25 years with' the implementation of <br />a coordinated resource.plan to improve resource conditions and to <br />lower the'rates of geomorphic processes. The proposed plan.is <br />developed by the primary team'.and the augmented team of field <br />specialists responsible for the watershed being studied. <br /> <br />. The compariso~ of the FWOP and th~ FWP modelled sedimentation rates <br />and quantities forms the basis for quantified and. documented <br />evaluation of resource management potentials within'a watershed. <br />The results of the comparison are a resource evaluation tool that <br />can be used for land management decisions, land. treatment planning, <br />documentation of environmental impacts and documentation of <br />proposed ~and treatment impacts. <br /> <br />Some of the land treatment practices used to develop the proposed <br />FWP condition are listed as follows: (1) cross slope harrowing, (2) <br />contour furrowing, (3) seeding, (4) chaining, (5) burning, (6) <br />.chemical spraying, (7) post and wire water spreaders, (8) post and <br />wire gully plugs, (9) brush gully plugs, (10) debris basins, (11) <br />livestock management practices, (12) livestock exclusion, (13) <br />fencing, (14) planning for wildlife, (15) water development and <br />(16) other Best Management Practices (BMP's)as defined in the <br />Field Office Technical Guide (SeS). <br /> <br />An economic analysis of the cost effectiveness of the proposed land <br />treatment I practices was performed. The cost figures were amortized <br />over a proposed life of land treatment practices (5 or 10 years) at <br />