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<br />Arizona Game and Fish Department <br />Biological Evaluation: Kanab Arobersnail <br /> <br />Site 2: Lower D_ Creek Spring <br /> <br />Desaiptioa: Wet sprioa wng densely veg~ taJus <br />slope ODd floodplain (1m m'ts stage) manh. <br /> <br />J~dioa: NPS-Gnnd Canyon NlIlional Parle <br /> <br />Surveyed: 1ul28 ODd Nov 3, 1996; Mar 19 ODd May <br />18, 1998 <br /> <br />Site Aspect: IOUth <br />Solar Exposure: early AM to !ale PM (1111l-Dee) <br />Annual BTUsisq ft: S3S ,088 <br /> <br />Water Discbarge (m'ts): moderate <br />Historic MaJ: Discbarge: UDkDown <br />Water Temp (OC): 17.6 med (minimax 16.0-19.1) <br />Condudivity (.uS): 910 med (minimax 820-1000) <br />Water pH: UDkDown <br /> <br />July 1998 <br />Page 24 <br /> <br />Location: Grand Canyon, river corridor <br />Coconino County, Arizona <br />River Mile: 136.1 RR (219.0 Ian) <br />Elevation: S91 m <br />UTM: N4027916, E364729 <br />7.5miD Topel Quad: Fisblail Mesa <br /> <br />A~iIity: ...y-boat <br /> <br />Geolollic Strata: Topeata Slmdatone <br />PredomiDaDt Substrate: soi1l1oam <br />litter/Dulf: medium density <br /> <br />Soil Temp (0C): 24.0 median (minimax 13.0-15.0) <br />Soil Moisture ('JP sat): 97 med (minimax 90-100) <br />Soil pH: 6.6 median (minimax 6.0-6.8) <br />Soil Depth (em): 19 median (minimax IS-20) <br />Slope (degrees): 7 median (minimax 1-10) <br /> <br />l'di"'AtO<t Recreatioual Use: none <br />Recreation Impact EvideDce: minor tnmpled veg <br />NPS llecre8tion l'di......A. 100-200 viaitorsIday at !be <br />riverside Waterfall ODd slot canYOD'-<mlib1y to visit <br />spring (3 m below trail, ringed by poison ivy) <br /> <br />Primary Vegetation & Esri...AtO<t Area: Typha spp. (>20 m'), Nasturtium spp. (>20 m'), ODd Minudu.s gluluuvs (10 <br />m'), MimuJus cardinaJi.r (on upper slope > 60 m') <br /> <br />Natural Di<iturbaDl:e Potential: moderate <br />Natural Impact Evidence: flash flood debris in <br />floodplain marsh (from March 1996 flood) <br />Other DisturbaDces: 1lDIl8 <br /> <br />~O<t Vegetation: Adkmtwn capi/Jus-veTW!ri8. Cara spp., Equuetum spp., JIDICUS spp., Scirpru spp., Phragmilu <br />australis, Populus fremolJlii. SaIiz aigua, Toxicodendron rydbergii <br /> <br />MoUusks: sw:cineids-Calinella spp.; physids-Phy.a (=Phy.ella) spp.' <br /> <br />Other Invertebrates: arachnids-(UDdeacribed ap.); homopterana-(undeecribed ieldhopper ap.); h)'llllllllllll8; <br />lepidopcerlll18-Papiliouidae Papilio; odoaatids-AMImidae Ana>: jlDlius, Coenagrionidu; <br /> <br />Site Status: FIoodpIaiD IIJlInh tbrealeued by high ftow rei........ from Glen ClIIlyon DIID1, but veg~ slope is protected <br />from natural and recrealional impocta. Has three types of primary vegetllliOD in ohmvlo""", but 1acking a diverse <br />invertebnle community. PreaeDce of poison ivy keeps visitors out of spring habitat. <br /> <br />KAS Establishment Recommendatioa: More desirable habitat. <br /> <br />RefereDCel: 'unpWlisbed NPS data (Jalbert 1997); 'Stevens et a!. 1997. <br />