Laserfiche WebLink
by electrofishing in April and May so that the fish could recover from surgery <br />before the spawning season. <br />Table i. Description of major habitat and substrate types. <br /> Habitat Classification <br />Main channel Primary river course that carries the major water flow <br /> throughout most of the year. <br />Backwater A shallow (<3 ft deep) ephemeras embayment adjacent to the <br /> main river channel with no measurable velocity; often <br /> created by an old eddy or aide channel which a lower water <br /> level partially isolates from the river channel. <br />Side channel A smaller channel in a braided river section which carries <br /> appreciable flow during high water and provides a lower <br /> velocity habitat during high flow. <br />Eddy A portion of the stream, usually deeper than the adjacent <br /> channel, with a distinct whirlpool or counter-current. <br /> River flow usually has a major upstream direction in these <br /> areas. <br />Pool A portion of the stream that is deep and quiet, that <br /> usually lies between two riffles. <br />Riffle A shallow fast-flowing area where the water surface is <br /> broken into waves by obstructions wholly or partly <br /> submerged. <br />Run A stretch of relatively deep, fast, laminar flow. <br />Shoreline The shallow water next to shore. <br />Flooded bottom A flooded field, side canyon or other feature above the <br /> bankfull river stage that can be considered a wetland type <br /> and is not riverine except during spring flooding. <br /> Substrate Classification <br />Silt Fine gritty material <br />Sand Less than 3 mm diameter <br />Gravel 3 to 76 mm diameter <br />Rubble (Cobble) 76 to 305 mm diameter <br />Boulder 305 mm and larger <br />Bedrock Rock outcropping <br />12 <br />