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274 <br />Table 3. Pool Quality Rating Guide for Streams in the Study Area <br />Quality <br />Class No. Length or Width Depth Shelterl <br />1 greater than a.c.w.2 2 ft or deeper abundant3 <br />greater than a.c.w. 3 ft or deeper exposed4 <br />2 greater than a.c.w. 2 ft or deeper exposed <br />greater than a.c.w. 2 ft intermediates <br />greater than a.c.w. 2 ft abundant <br />3 equal to a.c.w. 2 ft intermediate <br />equal to a.c.w. 2 ft abundant <br />4 equal to a.c.w. shallow6 exposed <br />less than a.c.w. shallow abundant <br />less than a.c.w. shallow intermediate <br />less than a.c.w. 2 ft intermediate <br />less than a.c.w. 2 ft or deeper abundant <br />5 less than a.c.w. shallow exposed <br />'Logs, stumps, boulders, and vege tation in or overhanging pool, or <br />overhanging banks. <br />2a.c.w. = average channel width. <br />3More than 1/2 perimeter of pool has cover. <br />4Less than 1/4 of pool perimeter has cover. <br />51/4 to 112 perimeter of pool has cover. <br />6Approximately equal to average s tream depth. <br />Table 4. Numerical Ratings Used to Classify Streambank Environments <br />Coverl Condition2 Type3 (Examples) <br />forest 2.0 excellent 2.0 sod, root, log 2.0 <br />brush 1.5 good 1.5 brush, rubble 1.5 <br />grass 1.0 fair 1.0 grass, gravel 1.0 <br />exposed .5 poor .5 fines, road fill .5 <br />'Type of vegetation dominating the streambanks. <br />2Stability of the st reambank to water flows. <br />3A habitat type that can be composed of a single material or combination <br />of materials. <br />Width and Depth <br />Stream width values refer to surface water widths measured perpendicular <br />to the flow of the stream. Average transect depths were obtained from four <br />equal-distance measurements.