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INTRODIICTION AND METHODS <br />This report describes the hydrology, water chemistry, <br />vegetation and invertebrate biomass of the Escalante State <br />Wildlife Area along the Gunnison River, just downstream from <br />Delta, Colorado. The study area includes an approximately 1 mile <br />long stretch of the Gunnison River, its active channel, <br />intermittent channel, abandoned ox-bow channels, and agricultural <br />fields. Portions of the river are diked restricting interaction <br />with the floodplain. <br />ESCALANTE STATE WILDLIFE AREA ON THE GUNNISON RIVER <br />9 <br />T N <br />old river <br />I 1, 000 teal I <br />Location of Sample <br />Staions <br />irrigation return <br />24N <br />river channel / backwater <br />4 SG 5 SC .{~ 19G <br />6 G B S S 21 (~>ap+~g~~ <br />3C p <br />2 N irrigation return <br />Gunnison River <br />15G <br />145G 11SG <br />backwater 2 165GQ O Q <br />17S <br />1 C Pam <br />escar{xnent ~_ <br />~ Roubideau Creek <br />Figure 1. Location of study stations and layout of the <br />landscape. SG=surface water stations, G=ground water wells, and <br />N=no gauge. <br />For our hydrologic studies we established 2 staff gauges on <br />the Gunnison River (stations 7 and 9) and 11 staff gauges in <br />oxbow and other ponds (2, 4, 5, 8, 10, 11, 14, 16, 17, 20 and <br />23). We also installed 5 ground water monitoring wells (1, 3, 6, <br />15 and 19). Wells were constructed of 1 inch PVC pipe. Holes <br />were hand augured to reach the water table. Our goal, was to <br />1 <br />