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-5- <br />characterized by mottled streaking and a lower percentage of <br />organic content. Rush wetland areas often were found around the <br />periphery of cattail or eedge wetland in slightly drier <br />conditions. <br />Healthy riparian (atreamside) wetland corridors were <br />established along the majority of the banks of the four west-east <br />flowing irrigation canals that traverse the property. These <br />wetlands were dominated by cottonwood trees (Ponulus <br />angustifolia) and willows (Salix app.). Vegetation was very <br />sparse adjacent to the north-south flowing St. Vrain Supply Canal <br />which flows along the western property boundary. <br />C. Acreage and Classification <br />Approximately 45.1 acres of wetland was inventoried within <br />property boundaries (Figure 1 and Table 1). This acreage <br />computation had an approximate error of 5X. Not included in this <br />total are riparian Istreamside) wetlands that border irrigation <br />ditches and the St. Vrain Creek in the southern portion of the <br />property (i.e., cottonwood trees). <br />Wetlands that occur along intermittent drainages can be <br />classified according to Windell et al. (1986) within a Rocky <br />Mountain regional context as: <br />CATEGORY: -communities adjacent to running water <br />SUBCATEGORY: -herbaceous wetland <br />SUBSTRATE: -mineral <br />WATER TYPE: -fresh <br />ECOSYSTEM TYPE: -herbaceous wetland <br />Wetlands that occur as isolated patches throughout can be <br />classified as (Windell et al. 1986): <br />CATEGORY: -communities with seasonal high water table <br />SUBCATEGORY: -herb wetland <br />SUBSTRATE: -mineral <br />WATER TYPE: -fresh <br />ECOSYSTEM TYPE: -marsh meadow <br />At s national level, wetlands are classified according to <br />Cowardin et al. (1979) for purposes of inventory, evaluation, and <br />management (U.S. Fish and Wildlife Service). All xetlanda <br />on-site can be classified according to this system as follows: <br />SYSTEM: -Palustrine <br />SUBSYSTEM: -none <br />CLASS: -emergent wetland <br />SUBCLAS3: -persistant <br />DOMINANCE TYPE: -Carex spp., Juncus app., Phalaris arundinacea <br />WATER REGIME: -seasonally flooded <br />WATER CHEMISTRY: -fresh <br />SOIL: -mineral <br />