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Modifier"C" <br /> Seasonally Flooded (Seasonal) <br /> Surface water is present for extended periods especially early in the growing season but is absent by <br /> the end of the season in most years. When surface water is absent, the water table is often near the <br /> surface. Santos and Gauster (1993, pg 31) add that the water table, after flooding ceases, is very <br /> variable,extending from saturated to a water table well below the surface.This accurately describes <br /> the situation that frequently occurs within reed canary grass wetlands where there is saturation to the <br /> surface or even several inches of inundation after snow melt. In most years, by the end of May, <br /> surface water is no longer evident in many of these basins.During June,the water table continues to <br /> recede until by August, the water table may be two or more feet below the surface. Many of these <br /> areas are used for livestock pasturing and for harvesting meadow hay.Wetlands with a"C"modifier <br /> that consist predominantly of reed canary grass should be categorized as either Type 1 or Type 2 <br /> depending on the length of time that water is present. This modifier is the most difficult to <br /> specifically assign to a Type 1, Type 2 or Type 3 category as it could apply to any of the three. <br /> Modifier"D" <br /> Seasonal Well-Drained (No comparable Cowardin category) <br /> Santos and Gauster(1993,pg 31)describe this modifier as applying where surface water is present <br /> for extended periods especially early in the growing season. The water table, after flooding ceases <br /> falls well below the ground surface. This modifier would appear to apply to floodplains and <br /> bottomland hardwood forests(Type 1L)as described above.Modifiers"C"and"D"seem to overlap <br /> to a certain extent and could also apply to reed canary grass wetlands as well. <br /> Modifier"E" <br /> Seasonal Saturated (No comparable Cowardin category) <br /> Surface water is present for extended periods especially early in the growing season, and remains <br /> saturated near the surface for most of the growing season (Santos and Gauster 1993, pg 31). This <br /> modifier would appear to apply to fens,sedge and rush meadows,some Type 6 shrub swamps,Type <br /> 7 Hardwood Swamps and Type 8 bogs.Some reed canary grass wetlands might fall into this category <br /> but most seem to be dried out by early to mid-summer. <br /> Modifier"F" <br /> Semipermanently Flooded (Semipermanent) <br /> Surface water persists throughout the growing season in most years. When surface water is absent, <br /> the water table is usually at or very near the land surface (Cowardin et al 1979, pg 22; Santos and <br /> Gauster 1993, pg 31). This modifier applies to Type 3 cattail marshes and may also apply to some <br /> hardwood swamps such as black ash, conifer bogs and Type 6 alder shrub swamps. <br /> Modifier"G" <br /> Intermittently Exposed <br /> Surface water is present throughout the year except in years of extreme drought (Cowardin et al <br /> 1979, pg 22; Santos and Gauster 1993, pg 31). Type 4 wetlands fall into this category. <br /> Svoboda Ecological Resources 1350 Orono Oaks Drive <br /> Project No.: 2007-061-03 40 Ron Ridgeway <br />