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<br /> <br />24 <br /> <br />Table 2. Descriptions of eight maj or habitat types on the Colorado, <br />Green and Gunnison Rivers. <br /> <br />Pool <br /> <br />Description <br /> <br />Primary river course that carries the major water <br />flow throughout most of the year. <br /> <br />A 1:x:>dy of water off the main channel with no <br />measureable velocity; often created by a drop <br />in water level Which partially isolates a fonner <br />side cha:rmel or low-lying area. <br /> <br />A side charmel which carries appreciable flow <br />during high water and provides a low velocity <br />habitat durlilg low flow. <br /> <br />A portion of the stream deeper than the adjacent <br />charmel and with a distinct whirlpool effect. <br /> <br />A portion of the stream that is deep and quiet <br />rela ti ve to the main current. <br /> <br />~ <br /> <br />Habitat <br /> <br />Main Channel <br /> <br />Backwater <br /> <br />Side Charmel <br /> <br />Eddy <br /> <br />Shoreline <br /> <br />A shallow fast-flrnv:ing area where the water <br />surface is broken into ,.Javes by obstructions <br />wholly or partly sul::merged. <br /> <br />A stretch of relatively deep fast, laminar flowing <br />water with the surface essentially non-turbulent. <br /> <br />The shallow, low-to-negligible velocity waters <br />next to shore. <br /> <br />Riffle <br /> <br />Run <br />