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<br />ERO Resources <br />Identification of Flood Irrigation and Sub irrigation Characteristics <br />Flood irrigation and subirrigation will be invesigated ire the field. <br />Criteria for identifying subirrigation will include: <br />1. presence of significant amounts of sub irrigated indicator plant <br />species, as determined using importance values derived from <br />relative cover, relative dertsitly and relative frequency data <br />2. presence of an alluvial zone of saturation <br />3. abundance of roots of agriculturally useful plants extending into <br />water table or into a soil zone as an indication of reduced <br />conditions <br />Flood irrigation will be identified as either natural or artificial. <br />Natural flood irrigation will be identified using the following criteria: <br />1, significant amounts of flood irrigated indicator plant species <br />2. analysis of flood flow using recorded and/or calculated data to <br />determine agriculturally useful floods <br />3. extrapolation of flood flow data on stream topography to <br />determine the area inundated by the agriculturally useful flood <br />Artificial flood irrigation will be evaluated using the following <br />criteria: <br />1. identification of streamside sites that are topographically flat <br /> enough to artificially flood irrigate <br />N~k <br />,~~ss~`1La Q <br />review of <br />water right <br />records within the permit area. <br />~•~ <br />3. document existing and historical artificial flood irrigation <br /> within the portions of the permit area in question <br />1V ?c,,. ~~ <br />~ 4. <br />evaluate 7,l.. rj~.ej <br />the #.easLYy of artificial flood irrigation <br />~•Y~.~ <br />operations <br />I <br /> *~ ,.e <br /> ~wk ,t ~- ~~. - 1 ` 1y G i <br />'~ 16=~ ~/ <br />.k <br />4 <br />1 <br />' <br />l <br />C <br />' <br />1 <br /> . <br />2L <br />. <br />i ~~i <br />a <br />~t~ <br />l.. t <br />~~i.i <br />y <br /> ~~ •~~, ~We <br />~y~f~~j,c ra J,e.,n¢.. ., <br />