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' <br /> ' <br /> Modifier "C" <br /> � Seasonally Flooded (Seasonal) <br /> Surface water is present for extended periods especially early in the growing season but is absent <br /> by the end of the season in most years. When surface water is absent, the water table is often <br /> � near the surface. Santos and Gauster (1993, pg 3 l) add that the water table, after flooding <br /> ceases, is very variable, extending from saturated to a water table well below the surface. This <br /> accurately describes the situation that frequently occurs within reed canary grass wetlands where <br /> � there is saturation to the surface or even several inches of inundation after snow melt. In most <br /> years, by the end of May, surface water is no longer evident in many of these basins. During <br /> June, the water table continues to recede until by August, the water table may be two or more <br /> � feet below the surface. Many of these areas are used for livestock pasturing and for harvesting <br /> meadow hay. Wetlands with a "C" modifier that consist predominantly of reed canary grass <br /> should be categorized as either Type 1 or Type 2 depending on the length of time that water is <br /> � present. This modifier is the most difficult to specifically assign to a Type 1, Type 2 or Type 3 <br /> 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 <br /> 1 present for extended periods especially early in the growing season. The water table, after <br /> flooding ceases falls well below the ground surface. This modifier would appear to apply to <br /> floodplains and bottomland hardwood forests (Type 1 L) as described above. Modifiers "C" and <br /> � "D" seem to overlap to a certain extent and could also apply to reed canary grass wetlands as <br /> well. <br /> 1 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, <br /> � Type 7 Hardwood Swamps and Type 8 bogs. Some reed canary grass wetlands might fall into <br /> this category 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 <br /> � absent, the water table is usually at or very near the land surface (Cowardin et al 1979, pg 22; <br /> Santos and Gauster 1993, pg 31). This modifier applies to Type 3 cattail marshes and may also <br /> apply to some hardwood swamps such as black ash, conifer bogs and Type 6 alder shrub <br /> � swamps. <br /> i <br /> t <br /> 1 <br />