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3. TEXT CHANGES TABLE 3~A WETLAND CLASSIFICATION ON AFFECTED PORTIONS OF YELLOW CREEK (After Cowardin et al. 1979) ystem: Palustrine Estimated In-Chanod Acreage by Land Status BLM CROW Private Estimated Outofchannel Acre- age by Land Status BLM CDOW Private Total Acreage CLASS: UNCONSOLIDATED BOTTOM Subclass: shale gravel, mud Dominance: Diptera larvae (Chironomidae, Simuliidae), Oligochaetes Modifiers: water regime -permanently/semiperm. Bonded water chemistry - Oligosaline (x = 3,650 mictomhoslcm) pH -alkaline (7.6-9.0) soil -mineral 18.6 6.1 0.5 - - - 25.2 CLASS: UNCONSOLIDATED SHORE Subclass: shale gravel, mud Dominance: pioneering annual forts Modifiers: water regime-seasonally Bonded CLASS: EMERGENT WETLAND t (Unconsolidated shore lumped with unconsobdated bottom) Subclass: persistent Dominance: Carex spp., meadow foxtail, bulrush, saltgrau, wheatgrass, bazin wildrye Modifiers:water regime- temporarily Flooded (inchannel) 18.9 13.7 1.3 33.9 intermittently Bonded (alluvial tertace) - 4.3 - 4.3 seasonally Flooded (alluvial terrace) - 7.3 - 7.3 CLASS: SCRUB-SHRUB W ETLAND 2 Subclass: broad-leaved deciduous Dominance: greasewood, rubber rabbitbnuh, big sagebrush, tamarisk Modifiers: water regime- intermittently Bonded 16.9 7.8 0.9 5.8 25.4 - 56.8 Total "Vegetated" Wetlands: 101.3 Total Shore and Channel: 25.2 t Emergent wetland aneage composed (each bank on average) of a 5.1-foot zone dominated by saltgruss, wheatgrass and wildrye; subtended by a 5.5-foot wide wne dominated by two sedge species, meadow (oxtail, and ane bulrush spxies. 2 Understory varies among gravel pavement or mud devoid of vegetatioe (211%), sparse Sv1gr855, wheatgrass, and cheatgrass (50%), or dew; (oxtail, saltgrazs, wheatgrass, and wildrye (30%). 3-12