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<br />sampled independently, although some overlap of habitats occurred. Some com- <br />bining of habitats was unavoidable or intentional. The habitat types for <br />this program are defined as follows: <br />Backwater - A body of water off the main channel with no measurable <br />velocity; often created by a drop in water level which partially <br />or entirely isolates former chute channels, or by high water <br />levels which caused the flooding of low lying areas. <br />Pool - ". . . portion of the stram that is deep and quiet rela- <br />tive to the main current." (Arnette 1976) <br />Shoreline - The shallow, low to n velocity waters next to shore. <br />Chute channel - A side channel off the main stream which carries <br />appreciable flows during high water and provides low velocity <br />habitat during low water. <br />Riffle - "A shallow rapids in open stream where the water surface <br />is broken into waves by obstructions wholly or partly submerged." <br />(Arnette, 1976) <br />Run - "A stretch of relatively deep . . fast flowing water, with <br />the surface essentially nonturbulent." (Arnette, 1976) <br />In addition to water temperatures, taken at each site, andoccasional <br />velocity measurements; dissolved oxygen, pH, turbidity and alkalinity and/or <br />hardness were measured at least once for each trend zone using a Hach Kit. <br />These parameters were measured to observe any extreme environmental condi- <br />tions brought about by the unusual low flow conditions during 1977 sampling.