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8 <br />6 <br />w <br />v <br />= 4 <br />a <br />w <br />2 <br />0 <br />¦ ¦ <br />¦ ¦ <br />ONE ¦2 r2 = .152 <br />¦ ¦¦ ¦ P < .01 <br />¦ 2 ¦ <br />¦ ¦ 2 ¦ ¦ <br />0.0 0.5 1.0 1.5 2.0 <br />SECCHI VISIBILITY (m) <br />Figure 8. Linear regression of water depth on water clarity (as <br />measured by Secchi disk visibility) at radio-tagged Colorado squawfish <br />locations within the 15-mile reach, 1987. <br />1. <br />r-. <br />? 1. <br />v <br />} <br />U <br />Z <br />W <br />Q <br />n <br />co <br />Z <br />Q <br />elf <br />F- <br />H 2 <br />U <br />U <br />W <br />U) <br />DATE <br />Figure 9. Water clarity as measured by Secchi disk visibility at <br />Colorado RM 174.4-175.2 during 1986. <br />28